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• Programatically add UserControl with events

  - by schaermu

  Hi everybody I need to add multiple user controls to a panel for further editing of the contained data. My user control contains some panels, dropdown lists and input elements, which are populated in the user control's Page_Load event. protected void Page_Load(object sender, EventArgs e) { // populate comparer ddl from enum string[] enumNames = Enum.GetNames(typeof (SearchComparision)); var al = new ArrayList(); for (int i = 0; i < enumNames.Length; i++) al.Add(new {Value = i, Name = enumNames[i]}); scOperatorSelection.DataValueField = "Value"; scOperatorSelection.DataTextField = "Name"; ... The data to be displayed is added to the user control as a Field, defined above Page_Load. The signature of the events is the following: public delegate void ControlStateChanged(object sender, SearchCriteriaEventArgs eventArgs); public event ControlStateChanged ItemUpdated; public event ControlStateChanged ItemRemoved; public event ControlStateChanged ItemAdded; The update button on the user control triggers the following method: protected void UpdateCriteria(object sender, EventArgs e) { var searchCritCtl = (SearchCriteria) sender; var scEArgs = new SearchCriteriaEventArgs { TargetCriteria = searchCritCtl.CurrentCriteria.CriteriaId, SearchComparision = ParseCurrentComparer(searchCritCtl.scOperatorSelection.SelectedValue), SearchField = searchCritCtl.scFieldSelection.SelectedValue, SearchValue = searchCritCtl.scFilterValue.Text, ClickTarget = SearchCriteriaClickTarget.Update }; if (ItemUpdated != null) ItemUpdated(this, scEArgs); } The rendering page fetches the data objects from a storage backend and displays it in it's Page_Load event. This is the point where it starts getting tricky: i connect to the custom events! int idIt = 0; foreach (var item in _currentSearch.Items) { SearchCriteria sc = (SearchCriteria)LoadControl("~/content/controls/SearchCriteria.ascx"); sc.ID = "scDispCtl_" + idIt; sc.ControlMode = SearchCriteriaMode.Display; sc.CurrentCriteria = item; sc.ItemUpdated += CriteriaUpdated; sc.ItemRemoved += CriteriaRemoved; pnlDisplayCrit.Controls.Add(sc); idIt++; } When first rendering the page, everything is displayed fine, i get all my data. When i trigger an update event, the user control event is fired correctly, but all fields and controls of the user control are NULL. After a bit of research, i had to come to the conclusion that the event is fired before the controls are initialized... Is there any way to prevent such behavior / to override the page lifecycle somehow? I cannot initialize the user controls in the page's Init-event, because i have to access the Session-Store (not initialized in Page_Init). Any advice is welcome... EDIT: Since we hold all criteria informations in the storage backend (including the count of criteria) and that store uses the userid from the session, we cannot use Page_Init... just for clarification EDIT #2: I managed to get past some of the problems. Since i'm now using simple types, im able to bind all the data declaratively (using a repeater with a simple ItemTemplate). It is bound to the control, they are rendered in correct fashion. On Postback, all the data is rebound to the user control, data is available in the OnDataBinding and OnLoad events, everything looks fine. But as soon it enters the real event (bound to the button control of the user control), all field values are lost somehow... Does anybody know, how the page lifecycle continues to process the request after Databinding/Loading ? I'm going crazy about this issue...

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• listview not updating,inserting

  - by raging_boner

  Data entered in textboxes is not getting updated in database. In debug mode I see that textbox1 and textbox2 in ItemUpdating event contain the same values as they had before calling ItemUpdating. Here's my listview control: <asp:ListView ID="ListView1" runat="server" onitemediting="ListView1_ItemEditing" onitemupdating="ListView1_ItemUpdating" oniteminserting="ListView1_ItemInserting"> //LayoutTemplate removed <ItemTemplate> <td align="center" valign="top"> <asp:Label ID="Label2" runat="server" Text='<%#Eval("id")%>'></asp:Label><br /> <asp:Label ID="Label3" runat="server" Text='<%#Eval("text1")%>'></asp:Label> </td> <td> <asp:LinkButton ID="LinkButton2" CommandName="Edit" runat="server">Edit</asp:LinkButton> <asp:LinkButton ID="LinkButton4" CommandName="Delete" runat="server">Delete</asp:LinkButton> </td> </ItemTemplate> <EditItemTemplate> <td align="center" valign="top"> <asp:Label ID="Label1" runat="server" Text='<%#Eval("id")%>'></asp:Label> <asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("text1")%>' TextMode="MultiLine" /> <asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("text2")%>' Height="100" TextMode="MultiLine" /> <asp:LinkButton ID="LinkButton1" CommandName="Update" CommandArgument='<%# Eval("id")%>' runat="server">Update</asp:LinkButton> <asp:LinkButton ID="LinkButton5" CommandName="Cancel" runat="server">Cancel</asp:LinkButton> </td> </EditItemTemplate> <InsertItemTemplate> <td align="center" valign="top"> <asp:TextBox ID="TextBox3" runat="server" TextMode="MultiLine" Height="100"></asp:TextBox> <asp:TextBox ID="TextBox4" runat="server" Height="100" TextMode="MultiLine"></asp:TextBox><br/> <asp:LinkButton ID="LinkButton3" runat="server">Insert</asp:LinkButton> </td> </InsertItemTemplate> </asp:ListView> Codebehind file: protected void ListView1_ItemEditing(object sender, ListViewEditEventArgs e) { ListView1.EditIndex = e.NewEditIndex; BindList(); } protected void ListView1_ItemUpdating(object sender, ListViewUpdateEventArgs e) { ListViewItem myItem = ListView1.Items[ListView1.EditIndex]; Label id = (Label)myItem.FindControl("Label1"); int dbid = int.Parse(id.Text); TextBox text1 = (TextBox)myItem.FindControl("Textbox1"); TextBox text2 = (TextBox)myItem.FindControl("Textbox2"); //tried to work withNewValues below, but they don't work, "null reference" error is being thrown //text1.Text = e.NewValues["text1"].ToString(); //text2.Text = e.NewValues["text2"].ToString(); //odbc connection routine removed. //i know that there should be odbc parameteres: comm = new OdbcCommand("UPDATE table SET text1 = '" + text1.Text + "', text2 = '" + text2.Text + "' WHERE id = '" + dbid + "'", connection); comm.ExecuteNonQuery(); conn.Close(); ListView1.EditIndex = -1; //here I databind ListView1 } What's wrong with updating of text1.Text, text2.Text in ItemUpdating event? Should I use e.NewValues property? If so, how to use it? Thanks in advance for any help.

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• How can I make three partials into just one in rails where the :collection is the same?

  - by Angela

  I have three partials that I'd like to consolidate into one. They share the same collection, but each gets passed its own :local variable. Those variables are used for specific Models, so as a result, I have three different calls to the partial and three different partials. Here's the repetitive code: <% for email in campaign.emails %> <h4><%= link_to email.title, email %> <%= email.days %> days</h4> <% @contacts= campaign.contacts.find(:all, :order => "date_entered ASC" )%> <!--contacts collection--> <!-- render the information for each contact --> <%= render :partial => "contact_email", :collection => @contacts, :locals => {:email => email} %> <% end %> Calls in this Campaign: <% for call in campaign.calls %> <h4><%= link_to call.title, call %> <%= call.days %> days</h4> <% @contacts= campaign.contacts.find(:all, :order => "date_entered ASC" )%> <!--contacts collection--> <!-- render the information for each contact --> <%= render :partial => "contact_call", :collection => @contacts, :locals => {:call => call} %> <% end %> Letters in this Campaign: <% for letter in campaign.letters %> <h4><%= link_to letter.title, letter %> <%= letter.days %> days</h4> <% @contacts= campaign.contacts.find(:all, :order => "date_entered ASC" )%> <!--contacts collection--> <!-- render the information for each contact --> <%= render :partial => "contact_letter", :collection => @contacts, :locals => {:letter => letter} %> <% end %> An example of one of the partials is as follows: < div id="contact_email_partial"> <% if from_today(contact_email, email.days) < 0 %> <% if show_status(contact_email, email) == 'no status'%> <p> <%= full_name(contact_email) %> <% unless contact_email.statuses.empty?%> (<%= contact_email.statuses.find(:last).status%>) <% end %> is <%= from_today(contact_email,email.days).abs%> days overdue: <%= do_event(contact_email, email) %> <%= link_to_remote "Skip Email Remote", :url => skip_contact_email_url(contact_email,email), :update => "update-area-#{contact_email.id}-#{email.id}" %> <span id='update-area-<%="#{contact_email.id}-#{email.id}"%>'> </span> <% end %> <% end %> </div>

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• Calculix Data Visualiser using QT

  - by Ann

  I am doing a project on CalculiX data visualizor,using Qt.I 've to draw the structure and after giving force the displacement should be shawn as variation in color.I chose HSV coloring,but while executing I got an error message:"QColor::from Hsv:HSV parameters out of range".The code is: DataViz1::DataViz1(QWidget *parent) : QWidget(parent), ui(new Ui::DataViz1) { DArea = new QGLScreen(this); DArea-setGeometry(QRect(10,10,700,600)); //TODO This values are feeded by user dfile="/home/41407/color.txt";//input file with displacement mfile="/home/41407/mesh21.txt";//input file nodeId="*NODE"; elId="*ELEMENT"; DataId="displ"; parseMfile(); parseDfile(); DArea->Nodes=Nodes; DArea->Elements=Elements; DArea->Data=Data; DArea->fillColorArray(); //printf("Colr is %d",DArea->pickColor(-11.02,0));fflush(stdout); ui->setupUi(this); } DataViz1::~DataViz1() { delete ui; } void DataViz1::parseMfile() { QFile file(mfile); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; int node_end=0; QTextStream in(&file); in.skipWhiteSpace(); while (!in.atEnd()) { QString line = in.readLine(); if(line.startsWith(nodeId))//Node block in Mfile { while(1) { line = in.readLine(); if(line.startsWith(elId)) { break; } Nodes< while(1) { line = in.readLine(); Elements<<line; //printf("Element is %s\n",line.toLocal8Bit().constData());fflush(stdout); if(in.atEnd()) break; } } } } void DataViz1::parseDfile() { QFile file(dfile); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; int node_end=0; QTextStream in(&file); in.skipWhiteSpace(); while (!in.atEnd()) { QString line = in.readLine(); if(line.startsWith(DataId)) { continue; } line = in.readLine(); Data< } /......................................................................../ include "qglscreen.h" include GLfloat LightAmbient[]= { 0.5f, 0.5f, 0.5f, 1.0f }; GLfloat LightDiffuse[]= { 1.0f, 1.0f, 1.0f, 1.0f }; GLfloat LightPosition[]= { 0.0f, 0.0f, 2.0f, 1.0f }; QGLScreen::QGLScreen(QWidget *parent):QGLWidget(QGLFormat(QGL::SampleBuffers), parent) { clearColor = Qt::black; xRot = 0; yRot = 0; zRot = 0; ifdef QT_OPENGL_ES_2 program = 0; endif //TODO user input ElType="HE8"; DType="SolidFrame"; axis="X"; } QGLScreen::~QGLScreen() { } QSize QGLScreen::minimumSizeHint() const { return QSize(50, 50); } QSize QGLScreen::sizeHint() const { return QSize(200, 200); } void QGLScreen::setClearColor(const QColor &color) { clearColor = color; updateGL(); } void QGLScreen::initializeGL() { xRot=0; yRot=0; zRot=0; scaling = 1.0; /* select clearing (background) color */ glClearColor (0.0, 0.0, 0.0, 0.0); glMatrixMode(GL_PROJECTION); glLoadIdentity(); // glViewport(0,0,10,10); glOrtho(-10.0, +10.0, -10.0, +10.0, -10.0,+10.0); glEnable (GL_LINE_SMOOTH); glHint (GL_LINE_SMOOTH_HINT, GL_DONT_CARE); } void QGLScreen::wheel1() { scaling1 += .0025; count2++; update(); } void QGLScreen::wheel2() { if(count2-14) { scaling1 -= .0025; count2--; update(); } } void QGLScreen::drawModel(int x1,int y1,int x2,int y2) { makeCurrent(); QStringList Cnode,Celement; for (int i = 0; i < Elements.size(); ++i) { Celement=Elements.at(i).split(","); // printf("Element is %s",Celement.at(0).toLocal8Bit().constData());fflush(stdout); //printf("Node at el is %s\n",(findNode(Celement.at(1).toInt())).at(1).toLocal8Bit().constData()); fflush(stdout); if(ElType=="HE8") { //First four nodes float ENX1=(findNode(Celement.at(1).toInt())).at(1).toDouble(); float ENX2=(findNode(Celement.at(2).toInt())).at(1).toDouble(); float ENX3=(findNode(Celement.at(3).toInt())).at(1).toDouble(); float ENX4=(findNode(Celement.at(4).toInt())).at(1).toDouble(); float ENY1=(findNode(Celement.at(1).toInt())).at(2).toDouble(); float ENY2=(findNode(Celement.at(2).toInt())).at(2).toDouble(); float ENY3=(findNode(Celement.at(3).toInt())).at(2).toDouble(); float ENY4=(findNode(Celement.at(4).toInt())).at(2).toDouble(); float ENZ1=(findNode(Celement.at(1).toInt())).at(3).toDouble(); float ENZ2=(findNode(Celement.at(2).toInt())).at(3).toDouble(); float ENZ3=(findNode(Celement.at(3).toInt())).at(3).toDouble(); float ENZ4=(findNode(Celement.at(4).toInt())).at(3).toDouble(); //Second four Nodes float ENX5=(findNode(Celement.at(5).toInt())).at(1).toDouble(); float ENX6=(findNode(Celement.at(6).toInt())).at(1).toDouble(); float ENX7=(findNode(Celement.at(7).toInt())).at(1).toDouble(); float ENX8=(findNode(Celement.at(8).toInt())).at(1).toDouble(); float ENY5=(findNode(Celement.at(5).toInt())).at(2).toDouble(); float ENY6=(findNode(Celement.at(6).toInt())).at(2).toDouble(); float ENY7=(findNode(Celement.at(7).toInt())).at(2).toDouble(); float ENY8=(findNode(Celement.at(8).toInt())).at(2).toDouble(); float ENZ5=(findNode(Celement.at(5).toInt())).at(3).toDouble(); float ENZ6=(findNode(Celement.at(6).toInt())).at(3).toDouble(); float ENZ7=(findNode(Celement.at(7).toInt())).at(3).toDouble(); float ENZ8=(findNode(Celement.at(8).toInt())).at(3).toDouble(); //Identify Colors GLfloat ENC[8][3]; for(int k=1;k<8;k++) { int hsv=pickColor(findData(Celement.at(k).toInt()).toDouble(),0); //printf("hsv is %d=",hsv);fflush(stdout); getRGB(hsv); //printf("%d*%d*%d\n",red,green,blue); //ENC[k]={red,green,blue}; ENC[k][0]=red; ENC[k][1]=green; ENC[k][2]=blue; } //Plot the first four direct loop if(DType=="WireFrame"){ glBegin(GL_LINE_LOOP); glColor3f(255,0,0); glVertex3f(ENX1,ENY1,ENZ1); glColor3f(255,0,0); glVertex3f(ENX2,ENY2,ENZ2); glColor3f(255,0,0); glVertex3f(ENX3,ENY3,ENZ3); glColor3f(255,0,0); glVertex3f(ENX4,ENY4,ENZ4); glEnd(); //Plot the second four direct loop glBegin(GL_LINE_LOOP); glColor3f(0,0,255); glVertex3f(ENX5,ENY5,ENZ5); glColor3f(0,0,255); glVertex3f(ENX6,ENY6,ENZ6); glColor3f(0,0,255); glVertex3f(ENX7,ENY7,ENZ7); glColor3f(0,0,255); glVertex3f(ENX8,ENY8,ENZ8); glEnd(); //Plot the interconnections glBegin(GL_LINE); glColor3f(150,150,150); glVertex3f(ENX1,ENY1,ENZ1); glVertex3f(ENX5,ENY5,ENZ5); glEnd(); glBegin(GL_LINE); glColor3f(150,150,150); glVertex3f(ENX2,ENY2,ENZ2); glVertex3f(ENX6,ENY6,ENZ6); glEnd(); glBegin(GL_LINE); glColor3f(150,150,150); glVertex3f(ENX3,ENY3,ENZ3); glVertex3f(ENX7,ENY7,ENZ7); glEnd(); glBegin(GL_LINE); glColor3f(150,150,150); glVertex3f(ENX4,ENY4,ENZ4); glVertex3f(ENX8,ENY8,ENZ8); glEnd(); } if(DType=="SolidFrame") { glBegin(GL_QUADS); glColor3fv(ENC[1]); glVertex3f(ENX1,ENY1,ENZ1); glColor3fv(ENC[2]); glVertex3f(ENX2,ENY2,ENZ2); glColor3fv(ENC[3]); glVertex3f(ENX3,ENY3,ENZ3); glColor3fv(ENC[4]); glVertex3f(ENX4,ENY4,ENZ4); glEnd(); //break; glBegin(GL_QUADS); glColor3fv(ENC[5]); glVertex3f(ENX5,ENY5,ENZ5); glColor3fv(ENC[6]); glVertex3f(ENX6,ENY6,ENZ6); glColor3fv(ENC[7]); glVertex3f(ENX7,ENY7,ENZ7); glColor3fv(ENC[8]); glVertex3f(ENX8,ENY8,ENZ8); glEnd(); glBegin(GL_QUAD_STRIP); glColor3fv(ENC[1]); glVertex3f(ENX1,ENY1,ENZ1); glColor3fv(ENC[5]); glVertex3f(ENX5,ENY5,ENZ5); glColor3fv(ENC[2]); glVertex3f(ENX2,ENY2,ENZ2); glColor3fv(ENC[6]); glVertex3f(ENX6,ENY6,ENZ6); glEnd(); glBegin(GL_QUAD_STRIP); glColor3fv(ENC[3]); glVertex3f(ENX3,ENY3,ENZ3); glColor3fv(ENC[7]); glVertex3f(ENX7,ENY7,ENZ7); glColor3fv(ENC[4]); glVertex3f(ENX4,ENY4,ENZ4); glColor3fv(ENC[8]); glVertex3f(ENX8,ENY8,ENZ8); glEnd(); glBegin(GL_QUAD_STRIP); glColor3fv(ENC[2]); glVertex3f(ENX2,ENY2,ENZ2); glColor3fv(ENC[6]); glVertex3f(ENX6,ENY6,ENZ6); glColor3fv(ENC[3]); glVertex3f(ENX3,ENY3,ENZ3); glColor3fv(ENC[7]); glVertex3f(ENX7,ENY7,ENZ7); glEnd(); glBegin(GL_QUAD_STRIP); glColor3fv(ENC[1]); glVertex3f(ENX1,ENY1,ENZ1); glColor3fv(ENC[5]); glVertex3f(ENX5,ENY5,ENZ5); glColor3fv(ENC[4]); glVertex3f(ENX4,ENY4,ENZ4); glColor3fv(ENC[8]); glVertex3f(ENX8,ENY8,ENZ8); glEnd(); } } } } QStringList QGLScreen::findNode(int element) { QStringList Temp; for (int i = 0; i < Nodes.size(); ++i) { Temp=Nodes.at(i).split(","); if(Temp.at(0).toInt()==element) { break; } } return Temp; } QString QGLScreen::findData(int Node) { QString Temp; QRegExp sep("\s+"); for (int i = 0; i < Data.size(); ++i) { if((Data.at(i).split("\t")).at(0).section(sep,1,1).toInt()==Node) { if(axis=="X") { Temp=Data.at(i).split("\t").at(0).section(sep,2,2); } if(axis=="Y") { Temp=Data.at(i).split("\t").at(0).section(sep,3,3); } if(axis=="Z") { Temp=Data.at(i).split("\t").at(0).section(sep,4,4); } break; } } return Temp; } void QGLScreen::fillColorArray() { QString Temp1,Temp2,Temp3; double d1s=0,d2s=0,d3s=0,d1l=0,d2l=0,d3l=0,diff=0; QRegExp sep("\\s+"); for (int i = 0; i < Data.size(); ++i) { Temp1=(Data.at(i).split("\t")).at(0).section(sep,2,2); if(d1s>Temp1.toDouble()) { d1s=Temp1.toDouble(); } if(d1l<Temp1.toDouble()) { d1l=Temp1.toDouble(); } Temp2=(Data.at(i).split("\t")).at(0).section(sep,3,3); if(d2s>Temp2.toDouble()) { d2s=Temp2.toDouble(); } if(d2l<Temp2.toDouble()) { d2l=Temp2.toDouble(); } Temp3=(Data.at(i).split("\t")).at(0).section(sep,4,4); if(d3s>Temp3.toDouble()) { d3s=Temp3.toDouble(); } if(d3l<Temp3.toDouble()) { d3l=Temp3.toDouble(); } // printf("data is %s",Temp.toLocal8Bit().constData());fflush(stdout); } color[0][0]=d1l; for(int i=1;i<360;i++) { //printf("Large is%f small is %f",d1l,d1s); diff=d1l-d1s; if(d1l==0&&d1s<0) color[0][i]=color[0][i-1]-diff/360; else if(d1l>0&&d1s==0) color[0][i]=color[0][i-1]+diff/360; else if(d1l>0&&d1s<0) color[0][i]=color[0][i-1]-diff/360; diff=d2l-d2s; if(d2l==0&&d2s<0) color[1][i]=color[1][i-1]-diff/360; else if(d2l>0&&d2s==0) color[1][i]=color[1][i-1]+diff/360; else if(d2l>0&&d2s<0) color[1][i]=color[1][i-1]-diff/360; diff=d3l-d3s; if(d3l==0&&d3s<0) color[2][i]=color[2][i-1]-diff/360; else if(d3l>0&&d3s==0) color[2][i]=color[2][i-1]+diff/360; else if(d3l>0&&d3s<0) color[2][i]=color[2][i-1]-diff/360; } //for(int i=0;i<360;i++) printf("%d %f %f %f\n",i,color[0][i],color[1][i],color[2][i]); } int QGLScreen::pickColor(double data,int Did) { int i,pos; if(axis=="X")Did=0; if(axis=="Y")Did=1; if(axis=="Z")Did=2; //printf("%f data is",data);fflush(stdout); for(int i=0;i<360;i++) { if(color[Did][i]<data && data>color[Did][i+1]) { //printf("Orginal dat is %f Data found is %f and pos %d\n",data,color[Did][i],i);fflush(stdout); pos=i; break; } } return pos; } void QGLScreen::getRGB(int hsv) { QColor c; c.setHsv(hsv,255,255,255); QColor r=QColor::fromHsv(hsv,255,255); red=r.red(); green=r.green(); blue=r.blue(); } void QGLScreen::paintGL() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushAttrib(GL_ALL_ATTRIB_BITS); glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity(); GLfloat x = 3.0 * GLfloat(width()) / height(); glOrtho(-x, +x, -3.0, +3.0, 4.0, 15.0); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); glTranslatef(0.0, 0.0, -10.0); glScalef(scaling, scaling, scaling); glRotatef(xRot, 1.0, 0.0, 0.0); glRotatef(yRot, 0.0, 1.0, 0.0); glRotatef(zRot, 0.0, 0.0, 1.0); drawModel(0,0,1,1); /* don't wait! * start processing buffered OpenGL routines */ glFlush (); } /void QGLScreen::zoom1() { scaling+=.05; update(); }/ void QGLScreen::resizeGL(int width, int height) { int side = qMin(width, height); glViewport((width - side) / 2, (height - side) / 2, side, side); #if !defined(QT_OPENGL_ES_2) glMatrixMode(GL_PROJECTION); glLoadIdentity(); #ifndef QT_OPENGL_ES glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0); #else glOrthof(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0); #endif glMatrixMode(GL_MODELVIEW); #endif } void QGLScreen::mousePressEvent(QMouseEvent *event) { lastPos = event-pos(); } void QGLScreen::mouseMoveEvent(QMouseEvent *event) { GLfloat dx = GLfloat(event->x() - lastPos.x()) / width(); GLfloat dy = GLfloat(event->y() - lastPos.y()) / height(); if (event->buttons() & Qt::LeftButton) { xRot+= 180 * dy; yRot += 180 * dx; update(); } else if (event->buttons() & Qt::RightButton) { xRot += 180 * dy; yRot += 180 * dx; update(); } lastPos = event->pos(); } void QGLScreen::mouseReleaseEvent(QMouseEvent * /* event */) { emit clicked(); }

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• How to modify MapRoute (add new dir)

  - by LuRsT

  How can I change my map route so I can have another dir, and not just the controllers and actions. What I want is to have another directory before the controller so that way I can separate controller per "module" routes.MapRoute( "Default", // Route name "{module}/{controller}/{action}/{id}", // URL with params new { module = "module", controller = "controller", action = "Index", id = ""} This is what I want, but the code doesn't work. What more do I need to change to change the MapRoute?

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• EXTJS 3.2.1 EditorGridPanel - ComboBox with jsonstore

  - by Yoong Kim

  Hi, I am using EXTJS with an editorgridpanel and I am trying to to insert a combobox, populated with JsonStore. Here is a snapshot of my code: THE STORE: kmxgz.ordercmpappro.prototype.getCmpapproStore = function(my_url) { var myStore = new Ext.data.Store({ proxy: new Ext.data.HttpProxy({ url: my_url , method: 'POST' }) , reader: new Ext.data.JsonReader({ root: 'rows', totalProperty: 'total', id: 'list_cmpappro_id', fields: [ {name: 'list_cmpappro_id', mapping: 'list_cmpappro_id'} , {name: 'list_cmpappro_name', mapping: 'list_cmpappro_name'} ] }) , autoLoad: true , id: 'cmpapproStore' , listeners: { load: function(store, records, options){ //store is loaded, now you can work with it's records, etc. console.info('store load, arguments:', arguments); console.info('Store count = ', store.getCount()); } } }); return myStore; }; THE COMBO: kmxgz.ordercmpappro.prototype.getCmpapproCombo = function(my_store) { var myCombo = new Ext.form.ComboBox({ typeAhead: true, lazyRender:false, forceSelection: true, allowBlank: true, editable: true, selectOnFocus: true, id: 'cmpapproCombo', triggerAction: 'all', fieldLabel: 'CMP Appro', valueField: 'list_cmpappro_id', displayField: 'list_cmpappro_name', hiddenName: 'cmpappro_id', valueNotFoundText: 'Value not found.', mode: 'local', store: my_store, emptyText: 'Select a CMP Appro', loadingText: 'Veuillez patienter ...', listeners: { // 'change' will be fired when the value has changed and the user exits the ComboBox via tab, click, etc. // The 'newValue' and 'oldValue' params will be from the field specified in the 'valueField' config above. change: function(combo, newValue, oldValue){ console.log("Old Value: " + oldValue); console.log("New Value: " + newValue); }, // 'select' will be fired as soon as an item in the ComboBox is selected with mouse, keyboard. select: function(combo, record, index){ console.log(record.data.name); console.log(index); } } }); return myCombo; }; The combobox is inserted in an editorgridpanel. There's a renderer like this: Ext.util.Format.comboRenderer = function(combo){ return function(value, metadata, record){ alert(combo.store.getCount()); <== always 0!! var record = combo.findRecord(combo.valueField || combo.displayField, value); return record ? record.get(combo.displayField) : combo.valueNotFoundText; } }; When the grid is displayed the first time, instead of have the displayField, I have : "Value not found." And I have the alert : 0 (alert(combo.store.getCount())) from the renderer. But I can see in the console that the data have been correctly loaded! Even if I try to reload the store from the renderer (combo.store.load();), I still have the alert (0)! But when I select the combo to change the value, I can see the data and when I change the value, I can see the displayFiel! I don't understand what's the problem? Since now several days, I already tried all the solutions I found...but still nothing! Any advice is welcome! Yoong

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• my asp.net mvc 2.0 application fails with error "No parameterless constructor defined for this objec

  - by loviji

  Hello, i'm new in asp.net mvc 2. I'm trying to list all data from one table(ms sql server table). as ORM I use Entity Framework. now, I'm tried to write something to do this: Model: private uqsEntities _uqsEntity; public permissionRepository(uqsEntities uqsEntity) { _uqsEntity = uqsEntity; } public IEnumerable<userPermissions> getAllData() { return _uqsEntity.userPermissions; } controller: private DataManager _dataManager; public ManagePermissionsController(DataManager datamanager) { _dataManager = datamanager; } public ActionResult Index() { return RedirectToAction("List"); } [AcceptVerbs(HttpVerbs.Get)] public ActionResult List() { return List(null); } [AcceptVerbs(HttpVerbs.Post)] public ActionResult List(int? userID) { return View(_dataManager.Permission.getAllData().ToList()); } Route: routes.MapRoute( "ManagePerm", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "ManagePermissions", action = "Index"}, new string[] { "uqs.Controllers" } // Parameter defaults ); and View automatically generated by Visual Studio(in action mouse right-click). when I run app. , my app. fails. No parameterless constructor defined for this object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.MissingMethodException: No parameterless constructor defined for this object. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [MissingMethodException: No parameterless constructor defined for this object.] System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck) +0 System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache) +86 System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) +230 System.Activator.CreateInstance(Type type, Boolean nonPublic) +67 System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) +80 [InvalidOperationException: An error occurred when trying to create a controller of type 'uqs.Controllers.ManagePermissionsController'. Make sure that the controller has a parameterless public constructor.] System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) +190 System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) +68 System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) +118 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +46 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +63 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +13 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8679186 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 please, somebody, help me to catch problem.

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• WPF MVVM ComboBox SelectedItem or SelectedValue not working

  - by cjibo

  Update After a bit of investigating. What seems to be the issue is that the SelectedValue/SelectedItem is occurring before the Item source is finished loading. If I sit in a break point and weight a few seconds it works as expected. Don't know how I'm going to get around this one. End Update I have an application using in WPF using MVVM with a ComboBox. Below is the ViewModel Example. The issue I'm having is when we leave our page and migrate back the ComboBox is not selecting the current Value that is selected. View Model public class MyViewModel { private MyObject _selectedObject; private Collection<Object2> _objects; private IModel _model; public MyViewModel(IModel model) { _model = model; _objects = _model.GetObjects(); } public Collection<MyObject> Objects { get { return _objects; } private set { _objects = value; } } public MyObject SelectedObject { get { return _selectedObject; } set { _selectedObject = value; } } } For the sake of this example lets say MyObject has two properties (Text and Id). My XAML for the ComboBox looks like this. XAML <ComboBox Name="MyComboBox" Height="23" Width="auto" SelectedItem="{Binding Path=SelectedObject,Mode=TwoWay}" ItemsSource="{Binding Objects}" DisplayMemberPath="Text" SelectedValuePath="Id"> No matter which way I configure this when I come back to the page and the object is reassembled the ComboBox will not select the value. The object is returning the correct object via the get in the property though. I'm not sure if this is just an issue with the way the ComboBox and MVVM pattern works. The text box binding we are doing works correctly.

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• How to pass an enum to Html.RadioButtonFor to get a list of radio buttons in MVC 2 RC 2, C#

  - by Matt W

  Hi, I'm trying to render a radio button list in MVC 2 RC 2 (C#) using the following line: <%= Html.RadioButtonFor(model => Enum.GetNames(typeof(DataCarry.ProtocolEnum)), null) %> but it's just giving me the following exception at runtime: Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions. Is this possible and if so, how, please? Thanks, Matt.

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• OpenXML SDK: Make Excel recalculate formula

  - by chiccodoro

  I update some cells of an Excel spreadsheet through the Microsoft Office OpenXML SDK 2.0. Changing the values makes all cells containing formula that depend on the changed cells invalid. However, due to the cached values Excel does not recalculate the formular, even if the user clicks on "Calculate now". What is the best way to invalidate all dependent cells of the whole workbook through the SDK? So far, I've found the following code snippet at http://cdonner.com/introduction-to-microsofts-open-xml-format-sdk-20-with-a-focus-on-excel-documents.htm: public static void ClearAllValuesInSheet (SpreadsheetDocument spreadSheet, string sheetName) { WorksheetPart worksheetPart = GetWorksheetPartByName(spreadSheet, sheetName); foreach (Row row in worksheetPart.Worksheet. GetFirstChild().Elements()) { foreach (Cell cell in row.Elements()) { if (cell.CellFormula != null && cell.CellValue != null) { cell.CellValue.Remove(); } } } worksheetPart.Worksheet.Save(); } Besides the fact that this snippet does not compile for me, it has two limitations: It only invalidates a single sheet, although other sheets might contain dependent formula It does not take into account any dependencies. I am looking for a way that is efficient (in particular, only invalidates cells that depend on a certain cell's value), and takes all sheets into account. Update: In the meantime I have managed to make the code compile & run, and to remove the cached values on all sheets of the workbook. (See answers.) Still I am interested in better/alternative solutions, in particular how to only delete cached values of the cells that actually depend on the updated cell.

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• NServiceBus and NHibernate - Message Handler and Transactions

  - by mattcodes

  From my understanding NServiceBus executes the Handle method of an IMessageHandler within a transaction, if an exception propagates out of this method, then NServiceBus will ensure the message is put back on the message queue (up X amount of times before error queue) etc.. so we have an atomic operation so to speak. Now when if I inside my NServiceBus Message Handle method I do something like this using(var trans = session.BeginTransaction()) { person.Age = 10; session.Update<Person>(person); trans.Commit() } using(var trans2 = session.BeginTransaction()) { person.Age = 20; session.Update<Person>(person); // throw new ApplicationException("Oh no"); trans2.Commit() } What is the effect of this on the transaction scope? Is trans1 now counted as a nested transaction in terms of its relationship with the Nservicebus transaction even though we have done nothing to marry them up? (if not how would one link onto the transaction of NServiceBus? Looking at the second block (trans2), if I uncomment the throw statement, will the NServiceBus transaction then rollback trans1 as well? In basic scenarios, say I dump the above into a console app, then trans1 is independent, commit, flushed and won't rollback. I'm trying to clarify what happens now we sit in someone else's transaction like NServiceBus? The above is just example code, im wouldnt be working directly with session, more like through a uow pattern.

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• Making TeamCity integrate the Subversion build number into the assembly version.

  - by Lasse V. Karlsen

  I want to adjust the output from my TeamCity build configuration of my class library so that the produced dll files have the following version number: 3.5.0.x, where x is the subversion revision number that TeamCity has picked up. I've found that I can use the BUILD_NUMBER environment variable to get x, but unfortunately I don't understand what else I need to do. The "tutorials" I find all say "You just add this to the script", but they don't say which script, and "this" is usually referring to the AssemblyInfo task from the MSBuild Community Extensions. Do I need to build a custom MSBuild script somehow to use this? Is the "script" the same as either the solution file or the C# project file? I don't know much about the MSBuild process at all, except that I can pass a solution file directly to MSBuild, but what I need to add to "the script" is XML, and the solution file decidedly does not look like XML. So, can anyone point me to a step-by-step guide on how to make this work? This is what I ended up with: Install the MSBuild Community Tasks Edit the .csproj file of my core class library, and change the bottom so that it reads: <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> <Import Project="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets" /> <Target Name="BeforeBuild"> <AssemblyInfo Condition=" '$(BUILD_NUMBER)' != '' " CodeLanguage="CS" OutputFile="$(MSBuildProjectDirectory)\..\GlobalInfo.cs" AssemblyVersion="3.5.0.0" AssemblyFileVersion="$(BUILD_NUMBER)" /> </Target> <Target Name="AfterBuild"> Change all my AssemblyInfo.cs files so that they don't specify either AssemblyVersion or AssemblyFileVersion (in retrospect, I'll look into putting AssemblyVersion back) Added a link to the now global GlobalInfo.cs that is located just outside all the project Make sure this file is built once, so that I have a default file in source control This will now update GlobalInfo.cs only if the environment variable BUILD_NUMBER is set, which it is when I build through TeamCity. I opted for keeping AssemblyVersion constant, so that references still work, and only update AssemblyFileVersion, so that I can see which build a dll is from.

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• Unity.ResolutionFailedException - Resolution of the dependency failed

  - by Anibas

  I have the following code: public static IEngine CreateEngine() { UnityContainer container = Unity.LoadUnityContainer(DefaultStrategiesContainerName); IEnumerable<IStrategy> strategies = container.ResolveAll<IStrategy>(); ITraderProvider provider = container.Resolve<ITraderProvider>(); return new Engine(provider, new List<IStrategy>(strategies)); } and the config: <unity> <typeAliases> <typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager, Microsoft.Practices.Unity" /> <typeAlias alias="weakRef" type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager, Microsoft.Practices.Unity" /> <typeAlias alias="Strategy" type="ADTrader.Core.Contracts.IStrategy, ADTrader.Core" /> <typeAlias alias="Trader" type="ADTrader.Core.Contracts.ITraderProvider, ADTrader.Core" /> </typeAliases> <containers> <container name="strategies"> <types> <type type="Strategy" mapTo="ADTrader.Strategies.ThreeTurningStrategy, ADTrader.Strategies" name="1" /> <type type="Trader" mapTo="ADTrader.MbTradingProvider.MBTradingProvider, ADTrader.MbTradingProvider" /> </types> </container> </containers></unity> I am getting the following exception: Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "ADTrader.Core.Contracts.ITraderProvider", name = "". Exception message is: The current build operation (build key Build Key[ADTrader.MbTradingProvider.MBTradingProvider, null]) failed: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Strategy type BuildPlanStrategy, index 3) --- Microsoft.Practices.ObjectBuilder2.BuildFailedException: The current build operation (build key Build Key[ADTrader.MbTradingProvider.MBTradingProvider, null]) failed: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Strategy type BuildPlanStrategy, index 3) --- System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at MBTCOMLib.MbtComMgrClass.EnableSplash(Boolean bEnable) at ADTrader.MbTradingProvider.MBTradingProvider..ctor() at BuildUp_ADTrader.MbTradingProvider.MBTradingProvider(IBuilderContext ) at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) --- End of inner exception stack trace --- at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.Builder.BuildUp(IReadWriteLocator locator, ILifetimeContainer lifetime, IPolicyList policies, IStrategyChain strategies, Object buildKey, Object existing) at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) --- End of inner exception stack trace --- at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) at Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name) at Microsoft.Practices.Unity.UnityContainerBase.ResolveT at ADTrader.Engine.EngineFactory.CreateEngine() Any idea?

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• Code sign error with Xcode 3.2

  - by quux

  I had a fully working build environment before upgrading to iPhone OS 3.1 and Xcode 3.2. Now when I try to do a build, i get the following: Code Sign error: Provisioning profile 'FooApp test' specifies the Application Identifier 'no.fooapp.iphoneapp' which doesn't match the current setting 'TGECMYZ3VK.no.fooapp.iphoneapp' The problem is that Xcode somehow manages to think that the "FooApp Test" provisioning profile specifies the Application Identifier "no.fooapp.iphoneapp", but this is not the case. In the Organizer (and in the iPhone developer portal website) the app identifier is correctly seen as 'TGECMYZ3VK.no.fooapp.iphoneapp'. Also, when setting the provisioning profile in the build options at the project level, Xcode correctly identifies the app identifier, but when I go to the target, I'm unable to select any valid provisioning profile. What could be causing this problem? Update: I've tried to create a new provisioning profile, but still no luck. I also tried simply changing the app identified in Info.plist to just "no.fooapp.iphoneapp". The build succeeds, but now I get an error from the Organizer: The executable was signed with invalid entitlements. The entitlements specified in your application's Code Signing Entitlements file do not match those specified in your provisioning profile. (0xE8008016). This seems reasonable, as the provisioning profile still has the "TGECMYZ3VK.no.fooapp.iphoneapp" application identifier. I also double checked that all certiicates are valid in the Keychain. So my question is how I can get Xcode to see the correct application identifier? UPDATE: As noted below, what seems to fix the problem is deleting all provisioning profiles, certificates etc, making new certificates / profiles and installing them again. If anyone has any other solutions, they would be welcome. :)

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• ASP.NET MVC Html.RouteLink

  - by gilbertc

  I am trying to understand what this RouteLink does. Say, in my Global.asax, I have the default route for MVC routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = "" } // Parameter defaults ); and on a View page, I do <%=Html.RouteLink("Dinners", "Default", new { controller="Dinners", action="Details", id="1"} %> Why it does not generate the link /Dinners/Details/1 but thrown an exception? Thanks. Gil.

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• Entity Framework with MySQL - Timeout Expired while Generating Model

  - by Nathan Taylor

  I've constructed a database in MySQL and I am attempting to map it out with Entity Framework, but I start running into "GenerateSSDLException"s whenever I try to add more than about 20 tables to the EF context. An exception of type 'Microsoft.Data.Entity.Design.VisualStudio.ModelWizard.Engine.ModelBuilderEngine+GenerateSSDLException' occurred while attempting to update from the database. The exception message is: 'An error occurred while executing the command definition. See the inner exception for details.' Fatal error encountered during command execution. Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. There's nothing special about the affected tables, and it's never the same table(s), it's just that after a certain (unspecific) number of tables have been added, the context can no longer be updated without the "Timeout expired" error. Sometimes it's only one table left over, and sometimes it's three; results are pretty unpredictable. Furthermore, the variance in the number of tables which can be added before the error indicates to me that perhaps the problem lies in the size of the query being generated to update the context which includes both the existing table definitions, and also the new tables that are being added to it. Essentially, the SQL query is getting too large and it's failing to execute for some reason. If I generate the model with EdmGen2 it works without any errors, but the generated EDMX file cannot be updated within Visual Studio without producing the aforementioned exception. In all likelihood the source of this problem lies in the tool within Visual Studio given that EdmGen2 works fine, but I'm hoping that perhaps others could offer some advice on how to approach this very unique issue, because it seems like I'm not the only person experiencing it. One suggestion a colleague offered was maintaining two separate EBMX files with some table crossover, but that seems like a pretty ugly fix in my opinion. I suppose this is what I get for trying to use "new technology". :(

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• Obtaining MFC Feature Pack GUI elements in .NET WinForms

  - by Cody Gray

  The MFC Feature Pack (and VS 2010) adds out-of-the-box support for several "modern" GUI elements (such as MDI with tabbed documents, the ribbon, and a Visual Studio-style interface with docking panels). These are a boon to those of us that have to support legacy MFC-based applications and want to update their look-and-feel, and a sign that Microsoft has not completely abandoned unmanaged C++ development. However, with the push so strongly in favor of .NET, WinForms, and managed code (and for plenty of good reasons), there seems little reason to develop new applications in unmanaged C++/MFC. The question then becomes how does one obtain these GUI elements in a WinForms application. Almost all of the add-ons and libraries I have found so far cost money, and introduce additional dependencies. I don't have a budget to buy third-party libraries, and the controls provided by Microsoft in MFC for free seem sufficient for our needs. But I still have reservations about learning MFC to develop a new application. Not only does the investment in time seem significant (by all accounts, MFC seems particularly difficult to learn, even for experienced .NET developers--although I am willing to try), but the question of MFC's lifespan is raised as well. Certainly, given the millions of lines of code and existing apps written in native C++, it will be around for some time, but the handwriting seems to be on the wall, so to speak, that it's no longer Microsoft's touted development platform. It seems like these features should be available by now in WinForms without the need for third-party add-ons, or devoting a lot of time and resources to custom-drawing EVERYTHING. Am I just missing something? I find very little online that compares these new features of MFC to what is available in WinForms, mainly because most everything written on MFC pre-dated its most recent update, before which it looked admitted "dated," and with its other flaws, was hardly an appealing platform for new development. With the very recent release of VS 2010, we have a while to wait before WinForms gets updated again. What routes are you guys taking for applications whose customers demand a modern-looking UI on a budget?

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• How to distribute ranking using MySQL Query and PHP

  - by nkp

  I have to distribute ranking to the 5000 students in an exam. Ranking is based on the score and the time taken (in seconds) to obtain that score. For example is 5 students have same score, then taken will be the criteria to calculate their ranks otherwise score should be the criteria to calculate their ranks. Following is my table tbRank ID StudID Score Time Date Rank 1 11 8 60 09-11-2013 2 22 6 45 09-11-2013 3 33 4 76 09-11-2013 4 44 6 67 09-11-2013 5 55 8 35 09-11-2013 6 66 8 35 08-11-2013 7 77 8 39 08-11-2013 Now rank column in above table should be updated as: ID StudID Score Time Date Rank 1 11 8 60 09-11-2013 2 2 22 6 45 09-11-2013 3 3 33 4 76 09-11-2013 5 4 44 6 67 09-11-2013 4 5 55 8 35 09-11-2013 1 6 66 8 35 08-11-2013 1 7 77 8 39 08-11-2013 2 I want to make a MySQL Query to do this business. Similarly there can be more than 10000 records in the table. So I need an optimized query for this functionality. Note: I am using PHP and MYSQL. Update: Everyday almost 5000 new entries will be created in the table and after all insertions are made, rank column will be updated once in a day. Now please suggest me the best way to do this. If I update rank column in the table, then only once I will have to do it, otherwise everytime while fetching the rank of the student, I will have to make calculations.

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• Return template as string - Django

  - by Ninefingers

  Hi All, I'm still not sure this is the correct way to go about this, maybe not, but I'll ask anyway. I'd like to re-write wordpress (justification: because I can) albeit more simply myself in Django and I'm looking to be able to configure elements in different ways on the page. So for example I might have: Blog models A site update message model A latest comments model. Now, for each page on the site I want the user to be able to choose the order of and any items that go on it. In my thought process, this would work something like: class Page(models.Model) Slug = models.CharField(max_length=100) class PageItem(models.Model) Page = models.ForeignKey(Page) ItemType = models.CharField(max_length=100) InstanceNum = models.IntegerField() # all models have primary keys. Then, ideally, my template would loop through all the PageItems in a page which is easy enough to do. But what if my page item is a site update as opposed to a blog post? Basically, I am thinking I'd like to pull different item types back in different orders and display them using the appropriate templates. Now, I thought one way to do this would be to, in views.py, to loop through all of the objects and call the appropriate view function, return a bit of html as a string and then pipe that into the resultant template. My question is - is this the best way to go about doing things? If so, how do I do it? If not, which way should I be going? I'm pretty new to Django so I'm still learning what it can and can't do, so please bear with me. I've checked SO for dupes and don't think this has been asked before...

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• Programmatically Set a QueryStringFilterWebPart / ExcelWebRenderer Connection

  - by user355972

  Code: public static void ChartPageConnector(SPWeb web, string pageURL, string providerWpId, string consumerWpId, string mappedName) { SPFile file = web.Files[pageURL]; SPLimitedWebPartManager mgr = file.GetLimitedWebPartManager(PersonalizationScope.Shared); TransformableFilterValuesToFilterValuesTransformer transformer = new TransformableFilterValuesToFilterValuesTransformer(); transformer.MappedConsumerParameterName = mappedName; //QueryStringFilterWebPart provider = (QueryStringFilterWebPart)mgr.WebParts[providerWpId]; //ExcelWebRenderer consumer = (ExcelWebRenderer)mgr.WebParts[consumerWpId]; JWP.WebPart provider = mgr.WebParts[providerWpId]; JWP.WebPart consumer = mgr.WebParts[consumerWpId]; ProviderConnectionPoint pcp = null; foreach (ProviderConnectionPoint ppoint in mgr.GetProviderConnectionPoints(provider)) { if (ppoint.InterfaceType == typeof(Microsoft.SharePoint.WebPartPages.ITransformableFilterValues)) { pcp = ppoint; break; } } ConsumerConnectionPoint ccp = null; foreach (ConsumerConnectionPoint cpoint in mgr.GetConsumerConnectionPoints(consumer)) { if (cpoint.InterfaceType == typeof(IFilterValues)) { ccp = cpoint; break; } } //mgr.SPConnectWebParts(provider, pcp, consumer, ccp); mgr.SPConnectWebParts(provider, pcp, consumer, ccp, transformer); file.Update(); web.Update(); } Error: The connection point "IFilterValues" on "g_33d68e82_6478_4629_a079_5a7e02ac4695" is disabled. Any Ideas Why?

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• Error code:-2147467259 Error code name:failed Java desktop application Cristal Report XI

  - by maverick-f14

  Hi guys, I'm trying to run Java_JRC_Desktop_View_Report_and_set_database_logon downloaded from this link: http://www.sdn.sap.com/irj/boc/index?rid=/library/uuid/d0d6f979-3e11-2c10-35a8-ac93994a30ed but at runtime my java desktop application throws this Exception: com.crystaldecisions.sdk.occa.report.lib.ReportSDKException: org/apache/log4j/Logger---- Error code:-2147467259 Error code name:failed From what depends? thx all.

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• .NET "must-have" development tools

  - by nzpcmad

  James Avery wrote a classic article a while back entitled Ten Must-Have Tools Every Developer Should Download Now which is a companion to Visual Studio Add-Ins Every Developer Should Download Now and Scott Hanselman has an excellent list on his blog but if you were on a desert island and were only allowed three .NET development tools which ones would you pick? Update: Assuming you already have an IDE like Visual Studio ... Update (5) : Up to 08/01 : The current state of play: Reflector 13 Resharper 9 NUnit + TestDriven.Net 7 Refactor Pro 4 Process Explorer (other Sysinternals) 3 SnippetCompiler 3 CodeRush 3 MSDN Library 2 LinqPad 2 Cruisecontrol.net 2 VMWare 2 RhinoMocks 2 Fiddler 2 PowerShell 2 PowerCommands for VS 2008 1 Sandcastle 1 SQL Profiler 1 Redgate ANTS profiler 11 NCover 1 VisualSVN 1 Rubber Ducky 1 WinMerge 1 NAnt 1 ViEmu 1 AnkhSVN 1 dotTrace Profiler 1 BeyondCompare 1 DPack VS Plugin 1 WCF Trace Viewer (SDK) 1 xUnit.net 1 SourceGear DiffMerge 1 Ghostdoc 1 Expression Studio 1 XAML Pad 1 KaXaml 1 Blender for 3D modeling 1 Snoop a WPF tool 1 DiffMerge 1 DPack 1 NDepend 1 Kodos 1 WatiN 1 HTTPWatch Basic Edition 1 Paint.Net 1 Mole For VS 1 What I find particularly interesting about this is that "NUnit + TestDriven.Net " is right up there in third place which shows the growing emphasis on testing as an integral part of the development process rather than as an adjunct which is simply bolted on. And I'm somewhat perplexed that Codesmith didn't receive a single vote?

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• C#: Streaming an Audio file from a Server to a Client

  - by Andreas Grech

  I am currently writing an application that will allow a user to install some form of an application (maybe a Windows Service) that will open a port on it's PC and given a particular destination on the hard disk, will then be able to stream mp3 files. I will then have another application that will connect to the server (being the user's pc) and be able to browse the hosted data by connecting to that PC (remotely ofcourse) given the port, and stream mp3 files from the server to the application I have found some tutorials online but most of them are about File Servers in C# and they download allow you to download a whole file. What I want is to stream an mp3 file so that it starts playing when a certain number of bytes are download (ie, whilst it is being buffered) How do I go about in accomplishing such a task? What I need to know specifically is how to write this application (that I will turn into a Windows Service later on) that will listen on a specified port a stream files, so that I can then access the files by something of the sort: http://<serverip>:65000/acdc/wholelottarosie.mp3 and hopefully be able to stream that file in a WPF MediaPlayer. [Update] I was following this tutorial about building a file server and sending the file from the server to the client. Is what I have to do something of the sort? [Update] Currently reading this post: Play Audio from a Stream using C# and I think it looks very promising as to how I can play streamed files; but I still don't know how I can actually stream the files from the server.

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• This page calls for XML namespace declared with prefix br but no taglibrary exists

  - by Christopher W. Allen-Poole

  I just finished the Netbeans introduction to Hibernate tutorial ( http://netbeans.org/kb/docs/web/hibernate-webapp.html#01 ) and I am getting the following error: "This page calls for XML namespace declared with prefix br but no taglibrary exists" Now, I have seen a similar question somewhere else: http://forums.sun.com/thread.jspa?threadID=5430327 but the answer is not listed there. Or, if it is, then I am clearly missing it -- line one of my index.xhtml file reads "http://www.w3.org/1999/xhtml". It also does not explain why, when I reload localhost:8080, the message disappears. Here is my index.xhtml file: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core"> <ui:composition template="./template.xhtml"> <ui:define name="body"> <h:form> <h:commandLink action="#{filmController.previous}" value="Previous #{filmController.pageSize}" rendered="#{filmController.hasPreviousPage}"/> <h:commandLink action="#{filmController.next}" value="Next #{filmController.pageSize}" rendered="#{filmController.hasNextPage}"/> <h:dataTable value="#{filmController.filmTitles}" var="item" border="0" cellpadding="2" cellspacing="0" rowClasses="jsfcrud_odd_row,jsfcrud_even_row" rules="all" style="border:solid 1px"> <h:column> <f:facet name="header"> <h:outputText value="Title"/> </f:facet> <h:outputText value="#{item.title}"/> </h:column> <h:column> <f:facet name="header"> <h:outputText value="Description"/> </f:facet> <h:outputText value="#{item.description}"/> </h:column> <h:column> <f:facet name="header"> <h:outputText value=" "/> </f:facet> <h:commandLink action="#{filmController.prepareView}" value="View"/> </h:column> </h:dataTable> <br/> </h:form> </ui:define> </ui:composition> </html>

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• The problem with installing PIL using virtualenv or buildout.

  - by Alexander Artemenko

  When I install PIL using easy_install or buildout it installs in such way, that I must do 'import Image', not 'from PIL import Image'. However, if I do "apt-get install python-imaging" or use "pip -E test_pil install PIL", all work fine. Here are examples of how I trying to install PIL using virtualenv: # virtualenv --no-site-packages test_pil # test_pil/bin/easy_install PIL # test_pil/bin/python Python 2.5.1 (r251:54863, Feb 6 2009, 19:02:12) [GCC 4.0.1 (Apple Inc. build 5465)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import PIL Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named PIL I see, that easy_install pack PIL into the Egg, and PIP does not. Same thing with buildbot, it uses eggs. How could I install PIL properly, using easy_install or buildout?

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