IIS 7.0 Report viewer Setting

1) Click on MIME Types :- 
       
         Action Pen               :-  Add
         FileName Extension  :- .axd
         MIME Type               :- application/octet-stream

2) Click on Handler Mapping :-

        Action pan Click Add Manage Handler
        Then Enter
             Request path :- Reserved.ReportViewerWebControl.axd
             Type              :- Microsoft.Reporting.WebForms.HttpHandler
             Name            :- Reserved-ReportViewerWebControl-axd  

Now Restart The IIS MUST

       

Disable button after first click and display confirmation box

Simple Code :- 

<asp:Button ID="btn" runat="server" Text="Start"
   UseSubmitBehavior="false"  
    OnClientClick="this.disabled=true;
      this.value = 'Please wait ...';"  onclick="btn_Click" />


With Confirm Message :

<asp:Button ID="btn" runat="server" Text="Start" 
   UseSubmitBehavior="false" 
      OnClientClick="if (!confirm('Certain??')) return; 
        this.disabled=true;this.value = 'Please wait ...';"      
 onclick="btn_Click" />

Sql server difference of various version

Difference between all sql server 2005, 2008, 2008 R2, 2012