When you get this error in Windows XP make sure you have given ASPNET user sufficient rights on your physical application folder, it mainly requires read permission.

When you get this error in Windows 2003 server you can right click your virtual directory – permission – grant aspnet user sufficient rights there.

If the above solution doesn’t work here is another alternative,

You could try editing the Machine.config (located in
C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\CONFI G\).

Look for a key userName=”machine”. If you set it to “SYSTEM”
instead the aspnet_wp.exe runs with a different user (with
higher privileges).

Hope this helps

Shadow copy is enabled on every appdomain created by ASP.NET by default. By default assemblies loaded will be copied to a shadow copy cache directory, and will be used from that location.

But this may create problem sometimes.

Turn off the custom error mode in web.config file first,

<customErrors mode="Off">

And add this code in your global.asax file to catch the error,

void Application_Error(object sender, EventArgs e)
 {
 HttpContext context = ((HttpApplication)sender).Context;
 if (context.Error != null)
 {
 Exception ex = context.Error;
 string msg = string.Empty;

 while (ex != null)
 {
 if (!string.IsNullOrEmpty(ex.Message))
 msg += ex.ToString() + "<br /><br />";
 ex = ex.InnerException;
 }
 context.Response.Clear();
 context.Response.Write(msg);
 context.Response.End();
 }
 } 

Hope this helps

You need to make this change in your web.config file. If you want to have a website as child of BlogEngine

<location path="." inheritInChildApplications="false">
 <system.web>
 ..... existing content .....
 </system.web>
</location>

<location path="." inheritInChildApplications="false">
 <system.webServer>
 ..... existing content .....
 </system.webServer>
</location>

site = new SPSite(siteUrl);
web = site.OpenWeb();
SPGroup grp = web.Groups[groupname];

itm=web.Lists["Shared Documents"].Items[0];

oUserRole = web.RoleDefinitions.GetByType(SPRoleType.Administrator);

oUserRoleAssignment = new SPRoleAssignment(loginName, emailId, userDisplayName, notes);//for user
or
oUserRoleAssignment = new SPRoleAssignment(grp);//for group

oUserRoleAssignment.RoleDefinitionBindings.Add(oUserRole);
itm.RoleAssignments.Add(oUserRoleAssignment);
web.AllowUnsafeUpdates = true;
itm.Update();
web.Update();
web.AllowUnsafeUpdates = false;

This is useful for setting item level permission via code.

object.ToString ( "Fn" );

where F is a single alphabetic character called the format specifier, and n can be one or more digits called the precision specifier.

The following table describes the standard numeric format strings. Note that the patterns produced by these format specifiers are influenced by the settings in the Regional Options control panel. Computers using different cultures or different currency settings will display different patterns.

“Label2 does not exist in the current context”

So I found that the problem was even though I renamed one of my old files it still contained the class that my codebehind was referencing (i.e. the class names were still the same) – and therefore was not seeing the newly added Label control to my new code.Shame the compiler doesn’t realise the duplication and give some indication.

Lesson: Remove any backed up files from the web folder and/or build directory to avoid pain

JSON allows us to serialize a object and send across a page in string format.All we need to do is to perform Deserialization on the requested page.

This is the sample code which demonstrates the use of JSON to send arraylist to another page.

The code below contains 2 arraylist which need to be send on another page.The arraylist are serialized and sent to different page with the help of querystring.

ArrayList list = new ArrayList();
ArrayList list1 = new ArrayList();
list1.Add("one-one");
list1.Add("one-two");
list1.Add("one-three");
list1.Add("one-four");
list.Add(list1);
list.Add("two");
list.Add("three");
string arrayList = JavaScriptConvert.SerializeObject(list);
Response.Redirect("Process.aspx?list="+arrayList);

The code below Deserialize and typecast the object to JavaScriptArray.

string arrayList = Request["list"];
JavaScriptArray list = (JavaScriptArray)JavaScriptConvert.DeserializeObject(arrayList);

You can download sample code from here.

Enjoy Coding

here is how you can disable the cut, copy, paste,

<asp:TextBox ID=”TextBox1″ runat=”server” oncopy=”return false” onpaste=”return false” oncut=”return false”></asp:TextBox>

Here are the features of the DotNetZip Library,
DotNetZip works on PCs with the full .NET Framework, and also runs on mobile devices that use the .NET Compact Framework. Create and read zip files in VB, C#, or any .NET language, or any scripting environment. DotNetZip supports these scenarios:
- an ASP.NET app that dynamically creates ZIP files and allows a browser to download them
- a Windows Service that periodically zips up a directory for backup and archival purposes
- a WPF program that modifyies an existing archive – renaming entries, removing entries from an archive, or adding new entries to an archive
- a Windows Forms app that creates AES-encrypted zip archives for privacy of archived content.
- An administrative script in PowerShell or VBScript that performs backup and archival.
- a WCF service that receives a zip file as an attachment, and dynamically unpacks the zip to a stream for analysis
- creating zip files from stream content, saving to a stream, extracting to a stream, reading from a stream
- creation of self-extracting archives.

Njoy coding