Dropdownlist - "Cannot Have Multiple Items Selected In A DropDownList.&quot?

Apr 29, 2010

how i handle this problem..Its in hidden filed.

Server Error in '/DentalClaimPrjt' Application.

Cannot have multiple items selected in a DropDownList.

Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Cannot have multiple items selected in a DropDownList.

Source Error: [Code]....

Line 85: function openPopup2(did)
Line 86: {
Line 87: var hdnClm1 = document.getElementById('<%=hdnCliamid.ClientID%>').value;
Line 88: window.location="Form.aspx?DeleteRSPid=" + did + "&Editid="+ hdnClm1;
Line 89: }

Source File: d:DentalClaimPrjtForm.aspx Line: 87 Stack Trace: [Code]....

[HttpException (0x80004005): Cannot have multiple items selected in a DropDownList.]
System.Web.UI.WebControls.DropDownList.VerifyMultiSelect() +106
System.Web.UI.WebControls.ListControl.RenderContents(HtmlTextWriter writer) +124

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