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  • WCF SSL secure transfer or large payloads without changing firewall.

    - by Sir Mix
    I need to transfer small amounts of data intermittently from clients to our server in a secure fashion and pull down large binary files from the server ocassionally. It's important for all this to be reliable. I'm anticipating 100,000 clients. I control both ends, but I want to deliver a solution that doesn't require changing the firewall for the majority of customers. A lag of one or two minutes before the information migrates to the server or comes down seems to be acceptable at this time. We need to make the connection secure, so was thinking about SSL, but open to suggestions. Basically, what is the best binding to use in this situation so that we have a secure transmission and the system handles the stress and load in a way that works for 95% of clients out of the box (firewalls will not block in majority of firewall configurations).

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  • How to crop or get a smaller size UIImage in iPhone without memory leaks?

    - by rkbang
    Hello all, I am using a navigation controller in which I push a tableview Controller as follows: TableView *Controller = [[TableView alloc] initWithStyle:UITableViewStylePlain]; [self.navigationController pushViewController:Controller animated:NO]; [Controller release]; In this table view I am using following two methods to display images: - (UIImage*) getSmallImage:(UIImage*) img { CGSize size = img.size; CGFloat ratio = 0; if (size.width < size.height) { ratio = 36 / size.width; } else { ratio = 36 / size.height; } CGRect rect = CGRectMake(0.0, 0.0, ratio * size.width, ratio * size.height); UIGraphicsBeginImageContext(rect.size); [img drawInRect:rect]; return UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); } - (UIImage*)imageByCropping:(UIImage *)imageToCrop toRect:(CGRect)rect { //create a context to do our clipping in UIGraphicsBeginImageContext(rect.size); CGContextRef currentContext = UIGraphicsGetCurrentContext(); //create a rect with the size we want to crop the image to //the X and Y here are zero so we start at the beginning of our //newly created context CGFloat X = (imageToCrop.size.width - rect.size.width)/2; CGFloat Y = (imageToCrop.size.height - rect.size.height)/2; CGRect clippedRect = CGRectMake(X, Y, rect.size.width, rect.size.height); //CGContextClipToRect( currentContext, clippedRect); //create a rect equivalent to the full size of the image //offset the rect by the X and Y we want to start the crop //from in order to cut off anything before them CGRect drawRect = CGRectMake(0, 0, imageToCrop.size.width, imageToCrop.size.height); CGContextTranslateCTM(currentContext, 0.0, drawRect.size.height); CGContextScaleCTM(currentContext, 1.0, -1.0); //draw the image to our clipped context using our offset rect //CGContextDrawImage(currentContext, drawRect, imageToCrop.CGImage); CGImageRef tmp = CGImageCreateWithImageInRect(imageToCrop.CGImage, clippedRect); //pull the image from our cropped context UIImage *cropped = [UIImage imageWithCGImage:tmp];//UIGraphicsGetImageFromCurrentImageContext(); CGImageRelease(tmp); //pop the context to get back to the default UIGraphicsEndImageContext(); //Note: this is autoreleased*/ return cropped; } But when I pop the Controller, the memory being used is not released. Is there any leaks in the above code used to create and crop images. Also are there any efficient method to deal with images in iPhone. I am having a lot of images and facing major challeges in resolving the memory issues. tnx in advance.

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  • How does Google Friend Connect accomplish cross domain communication without needing to upload a file to the client domain?

    - by mboyle
    Previously, Google's Friend Connect required users to upload a couple of files to their websites to enable cross domain communication and Facebook Connect still requires you to upload a single file to enabled it. Now, Friend Connect doesn't require any file upload... I was wondering how they were able to accomplish this. Reference: http://www.techcrunch.com/2009/10/02/easy-does-it-google-friend-connect-one-ups-facebook-connects-install-wizard/

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  • Is that the way to open old project in VS2008 without using any .NET framework ?

    - by mentallake
    Hi I've got a question about opening the old project in VS2008. If I have old c++ project(implement in VS6.0), and now I'd like to open it in VS2008 but I don't want to use .NET library because the application will be installed on the machine that has no any .NET framework (and I don't want to install any .NET to that machine). So is it possible to do that in VS2008? is there any configuration in VS2008? Thanks

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  • Simple way to decrease values without making a new attribute?

    - by Jam
    I'm making a program where you're firing a 'blaster', and I have 5 ammo. I'm blasting an alien who has 5 health. At the end I instantiate the player and make him blast 6 times to check that the program works correctly. But the way I've done it makes it so that the amount won't decrease. Is there an easy fix to this, or do I just have to make a new attribute for ammo and health? Here's what I have: class Player(object): """ A player in a shooter game. """ def blast(self, enemy, ammo=5): if ammo>=1: ammo-=1 print "You have blasted the alien." print "You have", ammo, "ammunition left." enemy.die(5) else: print "You are out of ammunition!" class Alien(object): """ An alien in a shooter game. """ def die(self, health=5): if health>=1: health-=1 print "The alien is wounded. He now has", health, "health left." elif health==0: health-=1 print "The alien gasps and says, 'Oh, this is it. This is the big one. \n" \ "Yes, it's getting dark now. Tell my 1.6 million larvae that I loved them... \n" \ "Good-bye, cruel universe.'" else: print "The alien's corpse sits up momentarily and says, 'No need to blast me, I'm dead already!" # main print "\t\tDeath of an Alien\n" hero = Player() invader = Alien() hero.blast(invader) hero.blast(invader) hero.blast(invader) hero.blast(invader) hero.blast(invader) hero.blast(invader) raw_input("\n\nPress the enter key to exit.")

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  • How to create a web framework in C# without ASPX?

    - by Mark
    I've managed to get a C# asp page running under ubuntu/apache/mono, but I don't want to write my framework in these ASP pages, I want to use straight C# and then I'll use a templating language for my views. But I don't know where to begin? C# is a compiled language, so... how would I do this? Would I compile everything and then have apache hook into the (single) executable and pass in the the request URL? Could I request specific .cs pages and then have apache tell it to compile and then "display" it only if it's been updated? Can the "view" files be compiled individually to avoid having to recompile everything every time there's a change? Is there some "base" I can work from, or am I going to have to reinvent accessing GET and POST variables (by reading header info) and all sorts of other stuff we take for granted in languages like PHP?

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  • How to get the PrintDocumentImageableArea for a given PrintQueue without going through PrintDialog?

    - by Patrick Klug
    From MSDN (link): The type PrintDocumentImageableArea has no public constructor. Hence, the variable documentImageableArea must be declared and assigned to Nothing and only then passed to the method. This method displays a PrintDialog requiring input from the user. After the user has selected a printer, paper size, and orientation and closed the dialog, documentImageableArea points to an actual object and its properties are initialized. I have my custom print dialog and need to get the PrintDocumentImageableArea of a given PrintQueue and PrintTicket! (I need the margin's I need to apply) From what I can gather it is quite common for anything but the most basic applications to use their own custom print dialog. There must be a way to get to this information!? Any input appreciated!

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  • How to backup database (MS SQl Server 2008) in C# without using SMO (having proplems) ?

    - by SzamDev
    Hi I have this code and it is not working but I don't why? try { saveFileDialog1.Filter = "SQL Server database backup files|*.bak"; saveFileDialog1.Title = "Database Backup"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { SqlCommand bu2 = new SqlCommand(); SqlConnection s = new SqlConnection("Data Source=M1-PC;Initial Catalog=master;Integrated Security=True;Pooling=False"); bu2.CommandText = String.Format("BACKUP DATABASE LA TO DISK='{0}'", saveFileDialog1.FileName); s.Open(); bu2.ExecuteNonQuery(); s.Close(); MessageBox.Show("ok"); } } catch (Exception ex) { MessageBox.Show(ex.ToString()); } and I get this error : What is the proplem?

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  • How do we group in BIRT without wasting lines, and still only printing the group item on the first l

    - by paxdiablo
    When grouping in BIRT, we frequently want the grouping value to show up on the first line as follows: Group User Reputation ------ --------------- ---------- Admins Bill The Weasel 51,018 Mark Grovel 118,101 Users pax_my_bags 73,554 Jon Scoot **,***,*** <- overflow clueless 92,928 The normal way of acheiving this is to lay out the group in the designer as follws: +---------+--------+--------------+ Tbl Hdr | Group | User | Reputation | +---------+--------+--------------+ Grp Hdr | [Group] | | | +---------+--------+--------------+ Grp Dtl | | [User] | [Reputation] | +---------+--------+--------------+ Grp Ftr | | | | +---------+--------+--------------+ Tbl Ftr | | | | +---------+--------+--------------+ which, unfortunately, lays out the data in exactly that way, with the grouped value on a different line: Group User Reputation ------ --------------- ---------- Admins Bill The Weasel 51,018 Mark Grovel 118,101 Users pax_my_bags 73,554 Jon Scoot **,***,*** <- overflow clueless 92,928 This is particularly painful with data where there's lots of groups with only one user since we use twice as much space as needed. If we move the [Group] data item down to the Grp Dtl line, we get it printed for every line in the group. How, in BIRT, do we merge the two lines Grp Hdr and the first Grp Dtl?

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  • In TSQL (SQL Server), How do I insert multiple rows WITHOUT repeating the "INSERT INTO dbo.Blah" par

    - by Timothy Khouri
    I know I've done this before years ago, but I can't remember the syntax, and I can't find it anywhere due to pulling up tons of help docs and articles about "bulk imports". Here's what I want to do, but the syntax is not exactly right... please, someone who has done this before, help me out :) INSERT INTO dbo.MyTable (ID, Name) VALUES (123, 'Timmy'), (124, 'Jonny'), (125, 'Sally') I know that this is close to the right syntax. I might need the word "BULK" in there, or something, I can't remember. Any idea?

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  • How to scale a sprite image without losing color key information?

    - by Michael P
    Hello everyone, I'm currently developing a simple application that displays map and draws some markers on it. I'm developing for Windows Mobile, so I decided to use DirectDraw and Imaging interfaces to make the application fast and pretty. The map moves when user moves finger on the touchscreen, so the whole map moving/scrolling animation has to be fast, but it is not. On every map update I have to draw portion of the map, control buttons, and markers - buttons and markers are preloaded on DirectDraw surface as a mipmap. So the only thing I do is BitBlit from the mipmap to a back buffer, and from the back buffer to a primary surface (I can't use page flipping due to the windowed mode of my application). Previously I used premultiplied-alpha surface with 32 bit ARGB pixel format for images mipmap, everything was looking good, but drawing entire "scene" was horribly slow - i could forget about smooth map scrolling. Now I'm using mipmap with native (RGB565) pixel format and fuchsia (0xFF00FF) color key. Drawing is much better my mipmap surface is generated on program loading - images are loaded from files, scaled (with filtering) and drawn on mipmap. The problem is, that image scaling process blends pixel colors, and those pixels which are on the border of a sprite region are blended with surrounding fuchsia pixels resulting semi-fuchsia color that is not treated as color key. When I do blitting with color key option, sprites have small fuchsia-like borders, and it looks really bad. How to solve this problem? I can use alpha blitting, but it is too slow - even in ARGB 1555 format.

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  • RDLC: Is there a way to print multiple tables without SubReports?

    - by Eduardo Molteni
    I'm generating the RDLC XML schema and showing the report in the ReportViewer control. No problems there. Now, I want a report with 2 tables, with 2 differents dataset. Something like this gets generated: <Body> <ReportItems> <Table Name="Table1"> .... </Table> <Table Name="Table2"> .... </Table> </ReportItems> </Body> But, when printed, both tables start from the top, printing on table over the other (not nice) Is there a way to tell that Table2 should start after Table1? Update: I've tried with List with a fake DataSource, but it does not work.

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  • java: can I convert strings with String.getBytes() without the BOM?

    - by Cheeso
    Suppose I have this code: String encoding = "UTF-16"; String text = "[Hello StackOverflow]"; byte[] message= text.getBytes(encoding); If I display the byte array in message, the result is: 0000 FE FF 00 5B 00 48 00 65 00 6C 00 6C 00 6F 00 20 ...[.H.e.l.l.o. 0010 00 53 00 74 00 61 00 63 00 6B 00 4F 00 76 00 65 .S.t.a.c.k.O.v.e 0020 00 72 00 66 00 6C 00 6F 00 77 00 5D .r.f.l.o.w.] As you can see, there's a BOM in the beginning. How can I: generate a UTF-16 byte array that lacks a BOM ? convert from a byte array that contains UTF=16 chars but lacks a BOM, back to a string?

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  • Facebook Connect for iPhone: How to upload an image (UIImage) to user's wall without having to use j

    - by Crowem
    Is there any way to upload an image (UIImage) directly from an iPhone app to a user's wall/feed? All the samples I see are either using a json-embedded link or they use the photos.upload call with album ID (aid) which results in the user getting the image in his photo album(s). What I want to do is to upload an (UI)Image created (by the user) inside an iPhone app and upload to his/her wall. Is this possible? Sample code would be highly appreciated.

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  • How do I insert data using a DetailsView into an access database without everything breaking?

    - by Steve
    Hey I'm getting the error: Data type mismatch in criteria expression. when I try to submit a DetailsView insert. Code for Default.aspx: (from inside an asp:Content tag) <asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="125px" AutoGenerateRows="False" DataKeyNames="user_id" DataSourceID="AccessDataSource1" CellPadding="4" ForeColor="#333333" GridLines="None"> <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <CommandRowStyle BackColor="#E2DED6" Font-Bold="True" /> <RowStyle BackColor="#F7F6F3" ForeColor="#333333" /> <FieldHeaderStyle BackColor="#E9ECF1" Font-Bold="True" /> <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" /> <Fields> <asp:BoundField DataField="email" HeaderText="email" SortExpression="email" /> <asp:BoundField DataField="password" HeaderText="password" SortExpression="password" /> <asp:BoundField DataField="users_name" HeaderText="users_name" SortExpression="users_name" /> <asp:BoundField DataField="image_path" HeaderText="image_path" SortExpression="image_path" /> <asp:BoundField DataField="mobile" HeaderText="mobile" SortExpression="mobile" /> <asp:BoundField DataField="twitter" HeaderText="twitter" SortExpression="twitter" /> <asp:TemplateField HeaderText="privacy_level_id" SortExpression="privacy_level_id"> <InsertItemTemplate> <asp:DropDownList ID="DropDownList2" runat="server" DataSourceID="AccessDataSource2" DataTextField="privacy_level_name" DataValueField="privacy_level_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource2" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [PrivacyLevels]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("date_of_birth") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="course_id" SortExpression="course_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList3" runat="server" DataSourceID="AccessDataSource3" DataTextField="course_name" DataValueField="course_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource3" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Courses]"> </asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList22" runat="server" DataSourceID="AccessDataSource22" DataTextField="privacy_level_name" DataValueField="privacy_level_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource22" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [PrivacyLevels]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList3" runat="server" DataSourceID="AccessDataSource3" DataTextField="course_name" DataValueField="course_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource3" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Courses]"></asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="nationality_id" SortExpression="nationality_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="AccessDataSource20" DataTextField="nationality_name" DataValueField="nationality_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource20" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Nationalities]"> </asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="AccessDataSource20" DataTextField="nationality_name" DataValueField="nationality_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource20" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Nationalities]"> </asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="AccessDataSource20" DataTextField="nationality_name" DataValueField="nationality_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource20" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Nationalities]"> </asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="residence_id" SortExpression="residence_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList4" runat="server" DataSourceID="AccessDataSource4" DataTextField="residence_name" DataValueField="residence_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource4" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Residences]"></asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList4" runat="server" DataSourceID="AccessDataSource4" DataTextField="residence_name" DataValueField="residence_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource4" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Residences]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList4" runat="server" DataSourceID="AccessDataSource4" DataTextField="residence_name" DataValueField="residence_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource4" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Residences]"></asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="course_year" HeaderText="course_year" SortExpression="course_year" /> <asp:TemplateField HeaderText="gender_id" SortExpression="gender_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList5" runat="server" DataSourceID="AccessDataSource5" DataTextField="gender_name" DataValueField="gender_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource5" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Genders]"></asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList5" runat="server" DataSourceID="AccessDataSource5" DataTextField="gender_name" DataValueField="gender_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource5" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Genders]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList5" runat="server" DataSourceID="AccessDataSource5" DataTextField="gender_name" DataValueField="gender_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource5" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Genders]"></asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:CommandField ShowInsertButton="True" InsertText="Create my user!" /> </Fields> <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <EditRowStyle BackColor="#999999" /> <AlternatingRowStyle BackColor="White" ForeColor="#284775" /> </asp:DetailsView> <asp:Button ID="Button1" runat="server" Text="Button" /> <asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/App_Data/VisageFinal.mdb" DeleteCommand="DELETE FROM [Users] WHERE [user_id] = ?" InsertCommand="INSERT INTO [Users] ([email], [password], [users_name], [image_path], [mobile], [twitter], [privacy_level_id], [nationality_id], [course_id], [residence_id], [course_year], [gender_id]) VALUES ('?', '?', '?', '?', '?', '?', ?, ?, ?, ?, ?, ?)" SelectCommand="SELECT * FROM [Users]" UpdateCommand="UPDATE [Users] SET [email] = ?, [password] = ?, [users_name] = ?, [date_of_birth] = ?, [image_path] = ?, [mobile] = ?, [twitter] = ?, [privacy_level_id] = ?, [nationality_id] = ?, [course_id] = ?, [residence_id] = ?, [has_set_privacy_level] = ?, [course_year] = ?, [gender_id] = ? WHERE [user_id] = ?"> <DeleteParameters> <asp:Parameter Name="user_id" Type="Int32" /> </DeleteParameters> <UpdateParameters> <asp:Parameter Name="email" Type="String" /> <asp:Parameter Name="password" Type="String" /> <asp:Parameter Name="users_name" Type="String" /> <asp:Parameter Name="image_path" Type="String" /> <asp:Parameter Name="mobile" Type="String" /> <asp:Parameter Name="twitter" Type="String" /> <asp:Parameter Name="privacy_level_id" Type="Int32" /> <asp:Parameter Name="nationality_id" Type="Int32" /> <asp:Parameter Name="course_id" Type="Int32" /> <asp:Parameter Name="residence_id" Type="Int32" /> <asp:Parameter Name="has_set_privacy_level" Type="Boolean" /> <asp:Parameter Name="course_year" Type="Int32" /> <asp:Parameter Name="gender_id" Type="Int32" /> <asp:Parameter Name="user_id" Type="Int32" /> </UpdateParameters> <InsertParameters> <asp:Parameter Name="email" Type="String" /> <asp:Parameter Name="password" Type="String" /> <asp:Parameter Name="users_name" Type="String" /> <asp:Parameter Name="image_path" Type="String" /> <asp:Parameter Name="mobile" Type="String" /> <asp:Parameter Name="twitter" Type="String" /> <asp:Parameter Name="privacy_level_id" Type="Int32" /> <asp:Parameter Name="nationality_id" Type="Int32" /> <asp:Parameter Name="course_id" Type="Int32" /> <asp:Parameter Name="residence_id" Type="Int32" /> <asp:Parameter Name="course_year" Type="Int32" /> <asp:Parameter Name="gender_id" Type="Int32" /> </InsertParameters> </asp:AccessDataSource> Any ideas what I've broken?

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  • how to round_corner a logo without leaving white background(transparent?) with it using pil?

    - by bdictator
    I got a square logo and I need to round_corner it, searched for a while and got the follow code "working": def round_corner_jpg(image, radius): """generate round corner for image""" mask = Image.new('RGB', image.size) #mask = Image.new('RGB', (image.size[0] - radius, image.size[1] - radius)) #mask = Image.new('L', image.size, 255) draw = aggdraw.Draw(mask) brush = aggdraw.Brush('black') width, height = mask.size draw.rectangle((0,0,width,height), aggdraw.Brush('')) #upper-left corner draw.pieslice((0,0,radius*2, radius*2), 90, 180, None, brush) #upper-right corner draw.pieslice((width - radius*2, 0, width, radius*2), 0, 90, None, brush) #bottom-left corner draw.pieslice((0, height - radius * 2, radius*2, height),180, 270, None, brush) #bottom-right corner draw.pieslice((width - radius * 2, height - radius * 2, width, height), 270, 360, None, brush) #center rectangle draw.rectangle((radius, radius, width - radius, height - radius), brush) #four edge rectangle draw.rectangle((radius, 0, width - radius, radius), brush) draw.rectangle((0, radius, radius, height-radius), brush) draw.rectangle((radius, height-radius, width-radius, height), brush) draw.rectangle((width-radius, radius, width, height-radius), brush) draw.flush() del draw return ImageChops.add(mask, image) then I saved the returned image object,however it has white background in it?how can i get rid of the white background? Thanks in advance~

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