How to Check EMPTY(or) NULL Sting

Question

How to Check EMPTY(or) NULL Sting Below code i have used i m getting ERROR Dim strr As String If (strr.ToString() = ) Then Response.Write(HAI) End If i m getting the following Error Object reference not set to an instance of an object. Thanks in Advence

Vulpes · Answer

Try: If String.IsNullOrEmpty(strr) Then Response.Write(HAI) End If

Satyapriya Nayak · Answer

Hi Rajkumar Partial Public Class _Default Inherits System.Web.UI.Page Dim strr As String =  Protected Sub Button1_Click(ByVal sender As Object ByVal e As EventArgs) Handles Button1.Click If (strr.ToString() = ) Then Response.Write(HAI) End If End Sub End Class Thanks