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• Re: Analyse changes in a picture on a webpage

  Check out classes from System.Drawing namespace. You can read a square (or rectangle) from picture when it changes and compare it with same area on new picture. If they are not matching byte by byte then something is changed.

  Posted to System.Drawing/GDI+ (Forum) by DigiMortal on 7/28/2009

• Re: GridView help

  Youhave to write another grid to group your results. Parent grid is bound to categories and child grid shows all rows in this category. Here's what you need to do. Create one grid that hosts another. When row is created in main grid then RowCreated event will be caught. There is code that find child grid for current main grid item and binds it to data.

  Posted to Data Presentation Controls (Forum) by DigiMortal on 7/27/2009

• Re: FileUpload Control

  File upload boc is very well protected in almost every browser. Some browsers may let you set value for it but I don't think it is common behavior.

  Posted to Web Forms (Forum) by DigiMortal on 7/27/2009

• Re: Analyse changes in a picture on a webpage

  Image analysis in code is pretty complex topic if you have only photos as input data. Can you tell more about your current solution? May be there is some way how to play it around easily.

  Posted to System.Drawing/GDI+ (Forum) by DigiMortal on 7/27/2009

• Re: run exe in C# panel.

  I think your another exe may listen to set parent call and block it. Try out more programs to see if this is the error in your code or is it common behavior of some programs. Post your details here and let's see what could be the cause of your problem.

  Posted to C# (Forum) by DigiMortal on 7/27/2009

• Re: how to set attributes in asp.net usercontrol?

  Check out these links: UserControl.Attributes Property Extending ASP.NET Web Controls With Custom HTML Attributes

  Posted to Web Forms (Forum) by DigiMortal on 7/27/2009

• Re: Fixed header in ASP.NET DataGrid..help needed

  Take a look at these links: Implementing a Fixed GridView Header in ASP.NET Cross Browser GridView Fixed Header Extender, ASP.NET AJAX Scrollable GridView with fixed headers in asp.net C# vb.net If IE8 is not able to understand you then you can force compatibility mode .

  Posted to Data Presentation Controls (Forum) by DigiMortal on 7/27/2009

• Re: HttpHandler redirect to .aspx page

  If it is possible you may consider using HttpHandler to return images with correct size. Here is the example for SharePoint but it is easy to modify to fit your needs SharePoint: Creating HttpHandler for user profile images . If you want to redirect internally you can use HttpContext.Current.Rewrite() method by example. You can give there also query string parameters for the page you redirect the request.

  Posted to HttpHandlers and HttpModules (Forum) by DigiMortal on 7/27/2009

• Re: Where to Maintain State Data Behind a Wizard-style UI

  Cache and Application are not good choices as they are accessable to all sessions. Some options to consider: Move data from onw wizard form to another using POST request. Keep wizard data in Session. If you are using database then you can save data related to current step to database when user moves to next step. You can also use ViewState of the page and keep all wizard steps in separate panels on this page.

  Posted to State Management (Forum) by DigiMortal on 7/27/2009

• Re: Asynchronous download from server to local machine (going to server C: drive)

  If there are large files I suggest you to output them by fixed size portions. Just read a chunk (let's say 8092 bytes) from file and output it to Response. Then flush response so there is no internal buffering. This way you keep bytes coming from server, there less unexpected timeouts etc. I don't have code example here to give you but steps should be something like this: Open file Set content type Set content disposition In cycle: - read chunk from file using stream.Read(bytes, 8092) - write

  Posted to Web Forms (Forum) by DigiMortal on 7/26/2009