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My Error was:
 

Server Error in '/WebSite5' Application.
Access to the path 'E:\Program Files\ImageUp\WebSite5\Upload' is denied.
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.UnauthorizedAccessException: Access to the path 'E:\Program Files\ImageUp\WebSite5\Upload' is denied.
 
ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6 and IIS 7, and the configured application pool identity on IIS 7.5) that is used if the application is not impersonating. If the application is impersonating via , the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.
 
To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.
 
Source Error:
 

Line 168: Response.ContentType = "application//octet-stream";
Line 169: Response.AppendHeader("Content-Disposition", "attachment; filename=" + fi.Name);
Line 170: Response.TransmitFile(Server.MapPath(fi.Name));
Line 171: Response.End();
Line 172: }
 

Source File: e:\Program Files\ImageUp\WebSite5\Default.aspx.cs Line: 170
 
Stack Trace:
 

[UnauthorizedAccessException: Access to the path 'E:\Program Files\ImageUp\WebSite5\Upload' is denied.]
System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +9722910
System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath) +1142
System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +83
System.Web.HttpResponse.TransmitFile(String filename, Int64 offset, Int64 length) +132
System.Web.HttpResponse.TransmitFile(String filename) +15
_Default.lnkDownload_Click(Object sender, EventArgs e) in e:\Program Files\ImageUp\WebSite5\Default.aspx.cs:170
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +118
System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +113
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +9
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +176
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563
 

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272
Posted 28-Apr-13 20:22pm
Comments
v surya dev at 29-Apr-13 1:26am
   
My Code was:
 
protected void lnkDownload_Click(object sender, EventArgs e)
{
 
LinkButton lnkbtn = sender as LinkButton;
GridViewRow gvrow = lnkbtn.NamingContainer as GridViewRow;
int ImageId = Convert.ToInt32(GridView1.DataKeys[gvrow.RowIndex].Value.ToString());
string name, type;
using (SqlConnection con = new SqlConnection(strCon))
{
using (SqlCommand cmd = new SqlCommand())
{
cmd.CommandText = "select ImageName, FileName, AddedOn from ImageInfo where ImageId=@ImageId";
cmd.Parameters.AddWithValue("@ImageId", ImageId);
cmd.Connection = con;
con.Open();
SqlDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
// Response.ContentType = dr["AddedOn "].ToString();
// Response.AddHeader("Content-Disposition", "attachment;filename=\"" + dr["ImageName"] + "\"");
System.IO.FileInfo fi = new System.IO.FileInfo(Server.MapPath("Upload"));
Response.Clear();
Response.ContentType = "application//octet-stream";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + fi.Name);
Response.TransmitFile(Server.MapPath(fi.Name));
Response.End();
}
}
}
}
i uploads the images successfully but... when i tried to download the file it shows is error in c#....
i used varbinary(max) datatype in backend....
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Solution 1

The Webserver isn't allowed to write into the specified 'E:\Program Files\ImageUp\WebSite5\Upload'-Path
 
Pretty much what
To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.
said...
 
Hope this will help you.
  Permalink  
v2
Comments
v surya dev at 29-Apr-13 2:35am
   
i tried that... but windows xp not showing that security tab.... please help me how to give permission for that folder...
s_mon at 29-Apr-13 2:53am
   
XP Professional?
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Solution 3

This is correct Coding WHen ur running In web server..its not work in localhost
Response.ContentType = "application//octet-stream";
 Response.AppendHeader("Content-Disposition", "attachment; filename=" + fi.Name);
 Response.TransmitFile(Server.MapPath(fi.Name));
 Response.End();
  Permalink  
v2
Comments
Manfred R. Bihy at 29-Apr-13 2:26am
   
Reason for my vote of one: What does all this have to do with the problem OP is observing?
v surya dev at 29-Apr-13 2:40am
   
my default running mode is administrator only...
v surya dev at 29-Apr-13 2:55am
   
can anyone tell me how to give permission for that folder.... plzzzzzzzzzz
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Solution 2

try running the application as administrator
  Permalink  
Comments
Manfred R. Bihy at 29-Apr-13 2:21am
   
Reason for my vote of one: Running a web application with administrator account privileges is a breach of security.

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