How to show the asp:comparevalidator message in Alert Box?

You should use the same ValidationGroup text on all validation controls and add a ValidationSummary with the ValidationGroup and ShowMessageBox="true"

Check

"form1"runat="server">
"lblNameRequired"runat="server"Text="*Name:">
"txtNameRequired"runat="server"ValidationGroup="Validation">
"RequiredFieldValidatorName"runat="server"ControlToValidate="txtNameRequired"
Display="None"ErrorMessage="NameisRequired"ValidationGroup="Validation">
"lblGenderRequired"runat="server"Text="*Gender:">
"ddlGenderRequired"runat="server"ValidationGroup="Validation">
"True"Value="-1">--Select--
"0">Male
"1">Female
"CompareValidatorGender"runat="server"ControlToValidate="ddlGenderRequired"
Display="None"ErrorMessage="GenderisRequired"Operator="NotEqual"ValidationGroup="Validation"
ValueToCompare="-1">
"lblValidation"runat="server"Text="Fieldsmarkedwith*arerequired">
"btnValidate"runat="server"Text="ValidateInput"ValidationGroup="Validation"/>
"ValidationSummary1"runat="server"ShowMessageBox="True"
ShowSummary="False"ValidationGroup="Validation"/>

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Shakti Singh Dulawat10y ago
You should use the same ValidationGroup text on all validation controls and add a ValidationSummary with the ValidationGroup and ShowMessageBox="true"
Check
"form1"runat="server">
"lblNameRequired"runat="server"Text="*Name:">
"txtNameRequired"runat="server"ValidationGroup="Validation">
"RequiredFieldValidatorName"runat="server"ControlToValidate="txtNameRequired"
Display="None"ErrorMessage="NameisRequired"ValidationGroup="Validation">

"lblGenderRequired"runat="server"Text="*Gender:">
"ddlGenderRequired"runat="server"ValidationGroup="Validation">
"True"Value="-1">--Select--
"0">Male
"1">Female
"CompareValidatorGender"runat="server"ControlToValidate="ddlGenderRequired"
Display="None"ErrorMessage="GenderisRequired"Operator="NotEqual"ValidationGroup="Validation"
ValueToCompare="-1">

"lblValidation"runat="server"Text="Fieldsmarkedwith*arerequired">

"btnValidate"runat="server"Text="ValidateInput"ValidationGroup="Validation"/>

"ValidationSummary1"runat="server"ShowMessageBox="True"
ShowSummary="False"ValidationGroup="Validation"/>
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