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How to get Java script alert or Message box in Asp.net. For me the requirement is 'If the caller enters invalid user name or password, I need to show the warning message in Message box' . Please assist me on this.Thanks in Advance.
Posted 21-Nov-12 3:42am
Edited 21-Nov-12 3:43am
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Solution 1

Try Using Boolean values in your function.
if the login is successful return true
if not return false and alert your message.
 
You can call this javascript function from C# code behind on login button_click event
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Solution 2

Window.alert("Error Message");
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