Need A code About MessageBox

1.  Create a class and add these two methods to it :

2.   

3.  // for postback events

4.  public static void ShowMessageBox(string _message)

5.      {

6.          Page page = HttpContext.Current.Handler as Page;

7.          page.RegisterStartupScript("key2", "");

8.      }

9.   

10.// for async postback events

11. public static void ShowMessageBoxForAsync(string _message)

12.    {

13.        Page page = HttpContext.Current.Handler as Page;

14.        ScriptManager.RegisterClientScriptBlock(page,page.GetType(), "key2", "alert('" + _message + "');", true);

15.    }

16. 

17.// Then you can call this in, let's say , button_click event handler like this ( i assume that your class name is Utilities without any namespace definition) :

18.protected void myButton_Click(object sender, EventArgs e)

19.{

20.Utilities.ShowMessageBox("you entered a wrong password");

21.}