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  • Excel Autofilter in VB.NET

    - by Fabri
    In my application I'm exporting an Excel file by getting the layout of a HTML page. So, in my codebehind, I'm modifying the HTML layout and inserting itens on it like if it was a webpage. Doing it that way, I don't need to use any external library and, as the data I'm exporting is just a table, I don't need nothing complex to handle it. My question is: there is a way to create an AutoFilter by just modifying the HTML tags? I mean, like if a put a < bColumn Name in the HTML, when exporting to Excel it will become Bold, it is possible to do the same thing with the AutoFilter?

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  • Using a .Net Workstation Program With a LAMP Server

    - by Brian
    Hi, I am currently working on a project for a company with a Ubuntu LAMP server set up. All the workstations are on Windows XP/Vista. What we are trying to do is create a program to track parts in our warehouse. Server side would be programmed in PHP. However, I was thinking about using C# on the workstation side. Is this possible? If so, is this practical? What kind of problems could arise from something like this?

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  • use .net webbrowser control by multithread, throw "EXCEPTION code=ACCESS_VIOLATION"

    - by user1507827
    i want to make a console program to monitor a webpage's htmlsourcecode, because some of the page content are created by some javescript, so i have to use webbrowser control. like : View Generated Source (After AJAX/JavaScript) in C# my code is below: public class WebProcessor { public string GeneratedSource; public string URL ; public DateTime beginTime; public DateTime endTime; public object GetGeneratedHTML(object url) { URL = url.ToString(); try { Thread[] t = new Thread[10]; for (int i = 0; i < 10; i++) { t[i] = new Thread(new ThreadStart(WebBrowserThread)); t[i].SetApartmentState(ApartmentState.STA); t[i].Name = "Thread" + i.ToString(); t[i].Start(); //t[i].Join(); } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } return GeneratedSource; } private void WebBrowserThread() { WebBrowser wb = new WebBrowser(); wb.ScriptErrorsSuppressed = true; wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler( wb_DocumentCompleted); while(true ) { beginTime = DateTime.Now; wb.Navigate(URL); while (wb.ReadyState != WebBrowserReadyState.Complete) { Thread.Sleep(new Random().Next(10,100)); Application.DoEvents(); } } //wb.Dispose(); } private void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { WebBrowser wb = (WebBrowser)sender; if (wb.ReadyState == WebBrowserReadyState.Complete) { GeneratedSource= wb.Document.Body.InnerHtml; endTime = DateTime.Now; Console.WriteLine("WebBrowser " + (endTime-beginTime).Milliseconds + Thread.CurrentThread.Name + wb.Document.Title); } } } when it run, after a while (20-50 times), it throw the exception like this EXCEPTION code=ACCESS_VIOLATION (null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(nul l)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(n ull)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null) (null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(nul l)(null)BACKTRACE: 33 stack frames: #0 0x083dba8db0 at MatchExactGetIDsOfNames in mshtml.dll #1 0x0879f9b837 at StrongNameErrorInfo in mscorwks.dll #2 0x0879f9b8e3 at StrongNameErrorInfo in mscorwks.dll #3 0x0879f9b93a at StrongNameErrorInfo in mscorwks.dll #4 0x0879f9b9e0 at StrongNameErrorInfo in mscorwks.dll #5 0x0879f9b677 at StrongNameErrorInfo in mscorwks.dll #6 0x0879f9b785 at StrongNameErrorInfo in mscorwks.dll #7 0x0879f192a8 at InstallCustomModule in mscorwks.dll #8 0x0879f19444 at InstallCustomModule in mscorwks.dll #9 0x0879f194ab at InstallCustomModule in mscorwks.dll #10 0x0879fa6491 at StrongNameErrorInfo in mscorwks.dll #11 0x0879f44bcf at DllGetClassObjectInternal in mscorwks.dll #12 0x089bbafa at in #13 0x087b18cc10 at in System.Windows.Forms.ni.dll #14 0x087b91f4c1 at in System.Windows.Forms.ni.dll #15 0x08d00669 at in #16 0x08792d6e46 at in mscorlib.ni.dll #17 0x08792e02cf at in mscorlib.ni.dll #18 0x08792d6dc4 at in mscorlib.ni.dll #19 0x0879e71b4c at in mscorwks.dll #20 0x0879e896ce at in mscorwks.dll #21 0x0879e96ea9 at CoUninitializeEE in mscorwks.dll #22 0x0879e96edc at CoUninitializeEE in mscorwks.dll #23 0x0879e96efa at CoUninitializeEE in mscorwks.dll #24 0x0879f88357 at GetPrivateContextsPerfCounters in mscorwks.dll #25 0x0879e9cc8f at CoUninitializeEE in mscorwks.dll #26 0x0879e9cc2b at CoUninitializeEE in mscorwks.dll #27 0x0879e9cb51 at CoUninitializeEE in mscorwks.dll #28 0x0879e9ccdd at CoUninitializeEE in mscorwks.dll #29 0x0879f88128 at GetPrivateContextsPerfCounters in mscorwks.dll #30 0x0879f88202 at GetPrivateContextsPerfCounters in mscorwks.dll #31 0x0879f0e255 at InstallCustomModule in mscorwks.dll #32 0x087c80b729 at GetModuleFileNameA in KERNEL32.dll i have try lots of methods to solve the problem, finally, i found that if i thread sleep more millseconds, it will run for a longer time, but the exception is still throw. hope somebody give me the answer of how to slove ... thanks very much !!!

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  • GoTo statements, and alternatives (help me please im new) (VB.net)

    - by qais
    Basically I posted a code snippet on a forum asking for help and people pointed out to me that using GoTo statements is very bad programming practise so I'm just wondering, why is it bad? And also what alternative is there to use, like for example in this program ive done for homework the user has to input their date of birth and if the month/date/year are invalid or unrealistic(using if statements checking the integer inputs size, if theres any better way to do this i'd appreciate if you could tell me that also :D) then how would i be able to loop back to ask them again? heres a little extract of my code retryday: Console.WriteLine("Please enter the day you were born : ") day = Console.ReadLine If day > 31 Or day < 1 Then Console.WriteLine("Please enter a valid day") GoTo retryday End If

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  • .NET threading question

    - by MusiGenesis
    Is there any essential difference between this code: ThreadStart starter = new ThreadStart(SomeMethod); starter.Invoke(); and this? ThreadStart starter = new ThreadStart(SomeMethod); Thread th = new Thread(starter); th.Start(); Or does the first invoke the method on the current thread while the second invokes it on a new thread?

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  • Sending email via GMail in .NET

    - by VP
    I am getting the following error when I try to send an email in my C# program. I am using Visual Studio 2008 on windows 7. I would paste my code first and then the error: class email_log_files { private string login_username = "my_gmail_id"; private string login_password = "my_gmail_password"; public void send_email() { string src_address = "[email protected]"; string dest_address = "[email protected]"; try { MailMessage email_msg = new MailMessage(); SmtpClient email_client = new SmtpClient(); email_msg.From = new MailAddress(src_address); email_msg.Sender = new MailAddress(src_address); email_msg.ReplyTo = new MailAddress(src_address); email_msg.To.Add(dest_address); email_msg.Subject = "Test"; email_msg.Body = "Body of the message"; NetworkCredential credentials = new NetworkCredential(login_username, login_password); email_client.Credentials = credentials; email_client.Host = "smtp.gmail.com"; email_client.Port = 465; email_client.EnableSsl = true; email_client.Send(email_msg); Console.WriteLine("Message Sent Successfully!!"); Console.ReadLine(); } } } And the error message is as follows: The operation has timed out. Why is it always timing out? I am sure that I have the correct smtp server address and port number for gmail as I have configured my outlook with the same. Any help or ideas?

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  • VB.net Reading from ListViews with Multiple Columns

    - by xzerox
    Alright. So I was able to find out how to read from the first column but I need to read from both of them. I am using full row select which I need on there. Here is the code I am using to get it for the first column. Dim I As Integer For I = 0 To ListView1.SelectedItems.Count - 1 MsgBox(ListView1.SelectedItems(I).Text) Next MessageBox.Show(ListView1.Columns(0).Text)

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  • .NET Assembly Diff / Compare Tool - What's available?

    - by STW
    I'd like to be able to do a code-level diff between two assemblies; the Diff plug-in for Reflector is the closest thing I've found so far, but to compare the entire assembly is a manual process requiring me to drill-down into every namespace/class/method. The other tools I've found so far appear to be limited to API-level (namespaces, classes, methods) differences--which won't cut it for what I'm looking for. Does anyone know of such a tool? My requirements (from highest to lowest) are: Be able to analyze / reflect the code content of two versions of the same assembly and report the differences Accept a folder or group of assemblies as input; quickly compare them (similar to WinMerge's folder diff's) Quick ability to determine if two assemblies are equivalent at the code level (not just the API's) Allow easy drill-down to view the differences Exporting of reports regarding the differences (Personally I like WinMerge for text diffs, so an application with a similar interface would be great)

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  • Pros/cons of reading connection string from physical file vs Application object (ASP.NET)?

    - by HaterTot
    my ASP.NET application reads an xml file to determine which environment it's currently in (e.g. local, development, production). It checks this file every single time it opens a connection to the database, in order to know which connection string to grab from the Application Settings. I'm entering a phase of development where efficiency is becoming a concern. I don't think it's a good idea to have to read a file on a physical disk ever single time I wish to access the database (very often). I was considering storing the connection string in Application["ConnectionString"]. So the code would be public static string GetConnectionString { if (Application["ConnectionString"] == null) { XmlDocument doc = new XmlDocument(); doc.Load(HttpContext.Current.Request.PhysicalApplicationPath + "bin/ServerEnvironment.xml"); XmlElement xe = (XmlElement) xnl[0]; switch (xe.InnerText.ToString().ToLower()) { case "local": connString = Settings.Default.ConnectionStringLocal; break; case "development": connString = Settings.Default.ConnectionStringDevelopment; break; case "production": connString = Settings.Default.ConnectionStringProduction; break; default: throw new Exception("no connection string defined"); } Application["ConnectionString"] = connString; } return Application["ConnectionString"].ToString(); } I didn't design the application so I figure there must have been a reason for reading the xml file every time (to change settings while the application runs?) I have very little concept of the inner workings here. What are the pros and cons? Do you think I'd see a small performance gain by implementing the function above? THANKS

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  • vb.net getsettings

    - by PandaNL
    Hello, I need a form width a checkbox "Don't show this again" for my winform, but how can i make this so when my Form1 loads it checks the state of the checkbox using the getsettings option? How can is save the checkbox state to the registery? and how do i get the state? If Form2.Checkbox.checked = Getsettings() Then Form2.showdialog Else Goto Skip End IF Skip:

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  • convert string to datetime vb.net

    - by sinae
    i need to convert strings to date format. the requirement is if current month is selected, the date should be getdate. if any other month is selected then it should be first of that month. the data coming in is "January 2010", "February 2010" and so on. but it should be inserted into sql server database as 01/01/10 or 02/01/10

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  • Consuming an RPC/encoded Web Service in .NET

    - by Timmy O' Tool
    I'm trying to build the proxy class for a web service using the wsdl Executing this command: wsdl [http://WSDL_URL] I'm getting Warning: This web reference does not conform to WS-I Basic Profile v1.1. R2706: A wsdl:binding in a DESCRIPTION MUST use the value of "literal" for the use attribute in all soapbind:body, soapbind:fault, soapbind:header and soapbind:headerfault elements. ... Error: Cannot find definition for http://schemas.xmlsoap.org/wsdl/:BouBinding. Service Description with namespace http://schemas.xmlsoap.org/wsdl/ is missing. Parameter name: name The author of the web service told me that the SOAP protocol is RPC/encoded. Is there is any way to generate a proxy class for this?

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  • .net VS2008 compilation analyzer tool ?

    - by Matthieu
    Hi, I'm looking for a tool that allows me to analyze the compilation of a VS Solution (about 30 VS projects inside). I would like to know after the global solution compilation, which projets fail and forward errors to developers. Of course, I could analyze the compilation report... but I'm pretty sure that great tools are available ! What is for you the best one ? Thanks a lot !

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  • Remove .net ContextMenuStrip Padding

    - by Frosty840
    Hi, When creating a ContextMenuStrip, there is a huge amount of padding around the contained controls. For example: Me.myMenu = New ContextMenuStrip 'unset all obvious padding settings' Me.myMenu.ShowCheckMargin = False Me.myMenu.ShowImageMargin = False Me.myMenu.Margin = New System.Windows.Forms.Padding(0) Me.myMenu.Padding = New System.Windows.Forms.Padding(0) Dim addButton As New Button addButton.Size = New Size(60, 60) addButton.Text = "Button" Dim addControlHost As New ToolStripControlHost(addButton) Me.myMenu.Items.Add(addcontrolhost) Me.ContextMenuStrip = Me.myMenu This, ideally, would cause a 60x60 button to pop up at the cursor location. What actually pops up is this: The button is there, as expected, but despite there being no margin, no padding, and having set both Show*Margin settings to False, there is a massive border around the Button. I'm probably missing something blindingly obvious, but how can I get rid of all the white bordering, especially that huge right-hand margin?

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  • Program skips code after trying to parse XML in VB.NET

    - by Bead
    I'm trying to parse some XML (html) I downloaded using WebRequest.Create() and then read it. However after loading the XML file using LoadXml(string), anything else I execute doesn't work. Setting a breakpoint on anything afterwards doesn't work and it doesn't break. I tried catching exception but none are occurring, so I'm not sure what the problem is. Here is my code: Dim reader As StreamReader = New StreamReader(HTTPResponse.GetResponseStream()) Dim xDoc As XmlDocument = New XmlDocument() xDoc.LoadXml(reader.ReadToEnd()) Dim omfg As String = xDoc.ChildNodes().Item(0).InnerText() Dim name As XmlNodeList = xDoc.GetElementsByTagName("div") Dim jj As Integer = name.Count For i As Integer = 0 To name.Count - 1 MessageBox.Show(name.Item(i).InnerText) Next i Anything after the "xDoc.LoadXml(reader.ReadToEnd())" doesn't execute.. Any ideas on this? My XML does have some whitespace at the beginning, I don't know if that is causing the problem...

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  • How can I extract System.Net.Mail from Mono and rename the namespaces?

    - by JL
    Microsoft's implementation of System.Net.Mail does not provide a robust mailing solution. I would like to use Mono's implementation of System.Net.Mail instead, however that namespace is embedded in the System.dll shipped with Mono, and has exact same namespaces as the original .net framework. What I would like to do is instead extract System.Net.Mail from the mono solution and rename namespaces to Mono.System.Net.Mail. Then I can compile this in its own DLL and finally have a mailing solution that works! Can anyone tell me how this can be done?

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  • Webservice with .NET

    - by mouthpiec
    Hi, I have an application that when run as a windows application takes around 4 secs to compute, but when run as a webservice, it takes a long time to compute (until a timeout). Do you have any idea what the problem might be? I am assuming that since the code is exactly the same, there are no problems such as infinite loops ..... it seems that it just takes longer. Do you have an idea what might the problem be? thanks

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  • NetworkStream.Read delay .Net

    - by Gilbes
    I have a class that inherits from TcpClient. In that class I have a method to process responses. In that method I call I get the NetworkStream with MyBase.GetStream and call Read on it. This works fine, excpet the first call to read blocks too long. And by too long I mean that the socket has recieved plenty of data, but won't read it until some arbitrary limit is reached. I can see that it has recieved plenty of data using the packet sniffer WireShark. I have set the recieve buffer to small amounts, and very small amounts (like just a few bytes) to no avail. I have done the same with the buffer byte array I pass to the read method, and it still delays. Or to put it another way. I am download 600k. The download takes 5 seconds (at a little over 100k/second connection to the server which makes sense). The initial Read call takes 2-3 seconds and tells me only 256 bytes are availble (256 is the Recieve buffer and the size of the array I read in to). Then magically, the other few hundred thousand bytes can be read in 256 byte chunks in only a few process ticks each. Using a packet sniffer, I know that during those initial 2-3 seconds, the socket has recieved much more than just 256 bytes. My connection wasn't .25k/second for 3 seconds and then 400k for 2 seconds. How do I get the bytes from a socket as they come in?

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  • .NET : System.Threading.ThreadStart Class

    - by Thomas
    Hello, I have questions about System.Threading.ThreadStart Class : where can I find its specifications ( there is praticly nothing in the msdn : http://msdn.microsoft.com/en-us/library/system.threading.threadstart.aspx or in ROTOR : www.dotnet247.com/247reference/system/threading/threadstart/__rotor.aspx) what is its field : protected System.IntPtr _methodPtrAux thanks

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  • ASP.NET auto-generate aspx.designer.cs turn off?

    - by Joris
    Hey all, As I'm working on a asp.net/c# project, I'm confronted with the foobar.aspx.designer.cs that auto generates it's content. eg, when I'm changing the code/designer, the designer.cs automatically updates it's content. As I'm bit of a control-dude, I'd like to maintain the code myself. I'm not happy with the overkill of comments I don't need. Like: /// <summary> /// Form1 control. /// </summary> /// <remarks> /// Auto-generated field. /// To modify move field declaration from designer file to code-behind file. /// </remarks> protected global::System.Web.UI.HtmlControls.HtmlForm Form1; While I'd like to see the following: protected global::System.Web.UI.HtmlControls.HtmlForm Form1; protected global::System.Web.UI.WebControls.Button Button3; etc, etc (don't mind the naming, ofcourse I'd give it some distinguishing nameing) How to fix this? I checked google on this one, but couldn't find an answer so quickly...

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  • Adding data in multiple tables in vb.net

    - by user225269
    This is a winform and I'm using mysql as a database, here is my code: I'm trying to add data into multiple tables. If TextBox14.Text = "" Or TextBox7.Text = "" Or TextBox10.Text = "" Then MsgBox("Please fill up the fields with a labels in bold letters!", MsgBoxStyle.Information) cn = New MySqlConnection("Server=localhost; Database=school;Uid=root;Pwd=nitoryolai123$%^;") 'provider to be used when working with access database cn.Open() cmd = New MySqlCommand("select * from parents, mother, father", cn) cmd.CommandText = "insert into parents values('" + idnum + "','" + p_contact + "','" + p_ad + "')" cmd.CommandText = "insert into mother values('" + idnum + "','" + mother + "','" + mother_occu + "')" cmd.CommandText = "insert into father values('" + idnum + "','" + father + "',''" + father_occu + "')" cmd.ExecuteNonQuery() I get this error, please help: Index and length must refer to a location within the string. Parameter name: length

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  • Read only particular fields from CSV File in vb.net

    - by fireBand
    Hi, I have this code to read a CVS file. It reads each line, devides each line by delimiter ',' and stored the field values in array 'strline()' . How do I extract only required fields from the CSV file? For example if I have a CSV File like Type,Group,No,Sequence No,Row No,Date (newline) 0,Admin,3,345678,1,26052010 (newline) 1,Staff,5,78654,3,26052010 I Need only the value of columns Group,Sequence No and date. Thanks in advance for any ideas. Dim myStream As StreamReader = Nothing ' Hold the Parsed Data Dim strlines() As String Dim strline() As String Try myStream = File.OpenText(OpenFile.FileName) If (myStream IsNot Nothing) Then ' Hold the amount of lines already read in a 'counter-variable' Dim placeholder As Integer = 0 strlines = myStream.ReadToEnd().Split(Environment.NewLine) Do While strlines.Length <> -1 ' Is -1 when no data exists on the next line of the CSV file strline = strlines(placeholder).Split(",") placeholder += 1 Loop End If Catch ex As Exception LogErrorException(ex) Finally If (myStream IsNot Nothing) Then myStream.Close() End If End Try

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