I Cant add any control to my visual studio

1 - please don't push 'answer' to post a non answer
2 - what do you expect us to do ? How can I fix your computer ? Visual Studio works for everyone who uses it, so, I don't see how the problem can be anything but your install or, if you've removed and reinstalled the program, then the issue is one of the things I listed. We sure as hell cannot help you based on your vague posts.

just create a custom cortrol in c#
<pre lang="cs">using System.ComponentModel;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Samples.AspNet.CS.Controls
{
[
AspNetHostingPermission(SecurityAction.Demand,
Level = AspNetHostingPermissionLevel.Minimal),
AspNetHostingPermission(SecurityAction.InheritanceDemand,
Level=AspNetHostingPermissionLevel.Minimal),
DefaultProperty(&quot;Text&quot;),
ToolboxData(&quot;&lt;{0}:WelcomeLabel runat=\&quot;server\&quot;&gt; &lt;/{0}:WelcomeLabel&gt;&quot;)
]
public class WelcomeLabel : WebControl
{
[
Bindable(true),
Category(&quot;Appearance&quot;),
DefaultValue(&quot;&quot;),
Description(&quot;The welcome message text.&quot;),
Localizable(true)
]
public virtual string Text
{
get
{
string s = (string)ViewState[&quot;Text&quot;];
return (s == null) ? String.Empty : s;
}
set
{
ViewState[&quot;Text&quot;] = value;
}
}

protected override void RenderContents(HtmlTextWriter writer)
{
writer.WriteEncodedText(Text);
if (Context != null)
{
string s = Context.User.Identity.Name;
if (s != null &amp;&amp; s != String.Empty)
{
string[] split = s.Split(&#39;\\&#39;);
int n = split.Length - 1;
if (split[n] != String.Empty)
{
writer.Write(&quot;, &quot;);
writer.Write(split[n]);
}
}
}
writer.Write(&quot;!&quot;);
}
}
}</pre>


then follow the folowing steps.

<b>•Create an ASP.NET server control.
•Add metadata to the control and its members to control security and design-time behavior.
•Use the App_Code directory in an ASP.NET Web site to test your control without manual compilation steps.
•Specify a tag prefix in a configuration file and in the control's assembly.
•Compile the control into an assembly and add it to the Bin directory.
•Embed a bitmap into the control's assembly as the toolbox icon for a visual designer.
•Use the compiled control in a page.</b>

Hi Shahin
one possible problem is that you did not make the forms Designe active
toolbox will not be available if you are activating the form1.cs
activate (i mean select the form designe and have the form1.cs disappear) then all the toolbox shall appear at the left side of your screen
cheer
khalid sabtan
saudia arabia

You're not holding your head at the right angle.