AJAX :: Check Username Availability Using PageMethods

Jun 30, 2012

I have tried code, but there is error...  

Compilation Error:
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS1525: Invalid expression term ')'

Source Error:
Line 8: <script type = "text/javascript">
Line 9: function ShowAvailability() {
Line 10: PageMethods.CheckUserName(document.getElementById("<%=txtUserName.LoginID%%>").value, OnSuccess); Line 11: }
Line 12: function OnSuccess(response) {

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