how to Get PostBack details just before PostBack?

[akshalika]

it's important for me to check something before postback. there are several postback controls on the page. is there any way to get postback details(url) before the page go into it?

thanks

[balame2004]

Request object had enough information about the request to your page.

Try this:
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(this.Request.Url.AbsoluteUri);
}

[akshalika]

No. what i want is. when postback happen in a page(because of button click or dropdown selection) which cause to navigate that page to another page(Response.Redirect...). I want to get Redirect URL before leave from first page and prevent redirect some restricted pages.

[Frinavale]

Have you ever looked into the ASP.NET Page Life Cycle?

Basically what happens is:

• A Page request is made for your aspx page
• Your page is initialized and your controls are loaded as Objects in memory
• The Page Load event is executed
• PostBack events are executed
• The page is rendered and sent to the browser
• The page is unloaded and all Objects used are destroyed

This means that if you want to check something before any postback events are executed you should do so in the Page Load event.

Once you've checked whatever you need to check you can determine what happens during the Postback event.

For example, say you want to check if the user has permissions to be redirected to another page...you would do this in the page load event:

VB.NET code:

Dim premittedToBeRedirected As Boolean = False
 
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
   If (HasPermissionsToBeRedirected() = True) Then
      premittedToBeRedirected = True
   End If
End Sub
 
Private Sub RedirectingLinkButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles RedirectingLinkButton.Click
    If premittedToBeRedirected = True Then
         Response.Redirect(url)
    End If
End Sub
 
Private Function HasPermissionsToBeRedirected() As Boolean
   'This method checks if the person has permission to be redirected
End Sub
 

C# code:

boolean premittedToBeRedirected  = False;
 
protected void Page_Load(Object sender, System.EventArgs e) 
{
   If (HasPermissionsToBeRedirected() == true) 
   {
      premittedToBeRedirected = true;
    }
}
 
private void RedirectingLinkButton_Click(Object sender, System.EventArgs e ) 
{
    If(premittedToBeRedirected == true)
    {
         Response.Redirect(url)
    }
}
 
Private boolean HasPermissionsToBeRedirected()
{
   //This method checks if the person has permission to be redirected
}