create folder and show some document in client side

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Hi I have a Silverlight application ,I attache some file such as image or excel or word document as a array in database , and then show them with these codes in client system, it works when I run it on visual studio but when I publish my project and run it on iis or on a web, It dose not show attached file can any body help me?
thanks

C#

try
          {
              System.IO.Directory.CreateDirectory(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\CImage");

          }
          catch (Exception ex)
          {
          }

              try
              {
                  System.IO.File.WriteAllBytes(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\CImage\\" + (e.Result.Last().NameFile .ToString().Trim()) + "-" + (e.Result.Last().Id.ToString().Trim()) + "." + (e.Result.Last().Format.ToString().Trim()), e.Result.Last().FileAttach );

              }
              catch (Exception ex)
              {
              }

          try
          {
              dynamic shell = AutomationFactory.CreateObject("Shell.Application");
              shell.ShellExecute(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\CImage\\" + (e.Result.Last().NameFile.ToString().Trim()) + "-" + (e.Result.Last().Id.ToString().Trim()) + "." + (e.Result.Last().Format.ToString().Trim()));

          }
          catch (Exception ex)
          {
              return;
          }

Posted 10-Oct-14 20:46pm

Angela 10293848

Updated 14-Oct-14 3:46am

v2

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Dominic Burford 14-Oct-14 10:10am

Personally I always try to read / write files to the user's TEMP folder.

string tempFolder = Path.GetTempPath();

As an aside, I place all my namespaces at the top of my code so that I don't clutter my code with the full path i.e. System.IO should be included at the top of your code file so that you don't need to keep referring to it repeatedly throughout your code.

Angela 10293848 15-Oct-14 1:44am

Hicould you explain more your idea , or by some snap code plz?

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Sinisa Hajnal · Answer 1 · 2014-10-14T03:59:00

Solution 1

You are accessing the MyDocuments folder, which is a SpecialFolder. You cannot access the folder in normal mode, only trusted applications with elevated privilege can access such type of special folder.

Please check your permissions and try again. If it is anything else, I'm out of my depth :)

Posted 14-Oct-14 3:59am

Sinisa Hajnal

Comments

Angela 10293848 15-Oct-14 3:13am

HiI folowed this page to make trusted app http://msdn.microsoft.com/en-us/library/gg192793(v=vs.95).aspx
but still id does not work in browser