Execute JavaScript after a PostBack (VB and C#)

Here is an example of how to execute JavaScript after a PostBack in a WebForms page (this specific case is not using ASP.NET Ajax, but rather a synchronous PostBack). This will allow you to run custom JavaScript after the server side code has executed.

VB.Net

        Page.Validate
    
        If Page.IsValid = True Then
            Page.ClientScript.RegisterClientScriptBlock(Me.GetType, "script", js, True)
        End If

C#

        Page.Validate();
    
        if (Page.IsValid)
        {
            Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "script", js, true);
        }