One of the challenges I faced was with a gridview named gv1. It contains checkboxes, and at least one checkbox must be checked for processing. Despite having custom validation in place, it seems to not be functioning correctly. Below is an overview:
The Custom Validator configuration:
<asp:CustomValidator runat="server" ID="vldItemCus"
ClientValidationFunction="ValidateSelection"
Display="None" ErrorMessage="Select at least one item for update" ValidationGroup="Update"></asp:CustomValidator>
Validation Summary:
<asp:ValidationSummary ID="vldSummary" runat="server" ShowMessageBox="True" ShowSummary="False" ValidationGroup="Update"></asp:ValidationSummary>
Javascript Function:
function ValidateSelection(source, args) {
var found = 0;
$('#gv1 input[type=checkbox]').each(function () {
if (this.checked) {
found = 1;
return false;
}
});
if (found == 1) {
args.IsValid = true;
}
else {
args.IsValid = false;
}
return;
}