RegisterStartupScript updated way to right Java script JS (Javascript) in code behind also work with update panel
Dear All RegisterStartupScript is obsolete now the new way that works with update panel is given below its is code behind file code also VB Code Dim csname1 As String = "PopupScript" Dim cstype As Type = Me.GetType() Dim cs As ClientScriptManager = Page.ClientScript Dim cstext1 As String = "alert('Your message');" cs.RegisterStartupScript(cstype, csname1, cstext1, True) C# Code String csname1 = "PopupScript"; Type cstype = this.GetType(); ClientScriptManager cs = Page.ClientScript; String cstext1 = "alert('Hello World');"; cs.RegisterStartupScript(cstype, csname1, cstext1, true); I hope it will help you also Regards Rashid Imran Bilgrami