Disable Right Click -Asp.Net

<script language="JavaScript">

      // on right click appear this message

      var DisplayMsg="Right Click Disabled";

      //return message

      function clickBYIE()

      {

          if(document.all)

          {

              alert(DisplayMsg);

              return false;

          }

      }

      //return message

      function clickBYNS(e)

      {

          if (document.layers||(document.getElementById&&!document.all))

          {

              if (e.which==2||e.which==3)

              {

               alert(DisplayMsg);

               return false;

              }

          }

      }

     //set the function as per browser

      if (document.layers)

      {

          document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickBYNS;

      }

      else

      {

          document.onmouseup=clickBYNS;document.oncontextmenu=clickBYIE;

      }

      //disabled the right click on the browser

       document.oncontextmenu=new Function("return false")

  </script>

Set Default Button in ASP.NET

<form id="form1" runat="server" defaultbutton="Button1">

   <asp:TextBox ID="Textbox1" runat="server" />

   <asp:TextBox ID="Textbox2" runat="server" />

   <asp:Button ID="Button1" runat="server" Text="Submit" />

   <asp:Button ID="Button2" runat="server" Text="Cancel" />

</form>

Embed youtube video without youtube link

<object style="height: 390px; width: 640px">

<param name="movie" value="http://www.youtube.com/v/u1zgFlCw8Aw?version=3">

<param name="allowFullScreen" value="true">

<param name="allowScriptAccess" value="always">

<embed src="http://www.youtube.com/v/u1zgFlCw8Aw?version=3" type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="640" height="390"></object>

How to check the value in querystring is number or not in Asp.Net

if (!String.IsNullOrEmpty(Request.QueryString["Id"]))

 {

   string Id = Request.QueryString["Id"].ToString();

   if (Id != "")

     {

        int numeber = 0;

        if (int.TryParse(Id, out number))

          {

         //code

          }

         else

          {

            Server.Transfer("Error.aspx");

          }

     }

     else

      {

         Server.Transfer("Error.aspx");

}

 }

ASP.NET GridView And Conditional Images

Depending upon a value in the data source, we can conditionally display images in GridView columns. For example, the following TemplateField declaration conditionally displays approved.gif or unapproved.gif based on IsApproved flag in the DataSet that the GridView is bound to:

 <asp:TemplateField HeaderText="Approval Status"> 

<ItemTemplate> 

<asp:Image ID="ApprovalImage" runat="server" ImageUrl='<%# "~/Images/" + (((bool)Eval("IsApproved") == false) ? "Unapproved.gif" : "Approved.gif") %>' /> 

</ItemTemplate> 

<ItemStyle Width="25px" /> 

</asp:TemplateField>