This has not happened to me before, but for some reason both the client and server side validation events are not being triggered:
<asp:TextBox ID="TextBoxDTownCity" runat="server" CssClass="contactfield" /> <asp:CustomValidator ID="CustomValidator2" runat="server" EnableClientScript="true" ErrorMessage="Delivery Town or City required" ClientValidationFunction="TextBoxDTownCityClient" ControlToValidate="TextBoxDTownCity" OnServerValidate="TextBoxDTownCity_Validate" Display="Dynamic" > </asp:CustomValidator>
Server-side validation event:
protected void TextBoxDTownCity_Validate(object source, ServerValidateEventArgs args) { args.IsValid = false; }
Client-side validation event:
function TextBoxDCountyClient(sender, args) { args.IsValid = false; alert("test"); }
I thought at the least the Server Side validation would fire but no. this has never happened to me before. This has really got me stumped.
I looked at the output and ASP.NET is recognizing the client side function:
ASP.NET JavaScript output:
var ctl00_ctl00_content_content_CustomValidator2 = document.all ? document.all["ctl00_ctl00_content_content_CustomValidator2"] : document.getElementById("ctl00_ctl00_content_content_CustomValidator2"); ctl00_ctl00_content_content_CustomValidator2.controltovalidate = "ctl00_ctl00_content_content_TextBoxDTownCity"; ctl00_ctl00_content_content_CustomValidator2.errormessage = "Delivery Town or City required"; ctl00_ctl00_content_content_CustomValidator2.display = "Dynamic"; ctl00_ctl00_content_content_CustomValidator2.evaluationfunction = "CustomValidatorEvaluateIsValid"; ctl00_ctl00_content_content_CustomValidator2.clientvalidationfunction = "TextBoxDTownCityClient";
Rendered custom validator:
<span id="ctl00_ctl00_content_content_CustomValidator2" style="color:Red;display:none;">Delivery Town or City required</span>
Can any one shed some light as to why both client and server side validation would not be firing.
Edit: Typo I pasted in the wrong function, problem still the same
Just another update to the last comment: where by the TextBox cannot be empty. I tested this out and it is not true. On a blank page the CustomValidator fired my client side validation function fine without a value:
<asp:TextBox ID="TextBox1" runat="server" /> <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="CustomValidator" ClientValidationFunction="TextBoxDAddress1Client"></asp:CustomValidator> <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
Use this:
<asp:CustomValidator runat="server" id="vld" ValidateEmptyText="true"/>
To validate an empty field.
You don't need to add 2 validators !
Your CustomValidator
will only fire when the TextBox
isn't empty.
If you need to ensure that it's not empty then you'll need a RequiredFieldValidator
too.
EDIT:
If your CustomValidator
specifies the ControlToValidate
attribute (and your original example does) then your validation functions will only be called when the control isn't empty.
If you don't specify ControlToValidate
then your validation functions will be called every time.
This opens up a second possible solution to the problem. Rather than using a separate RequiredFieldValidator
, you could omit the ControlToValidate
attribute from the CustomValidator
and setup your validation functions to do something like this:
Client Side code (Javascript):
function TextBoxDCountyClient(sender, args) { var v = document.getElementById('<%=TextBoxDTownCity.ClientID%>').value; if (v == '') { args.IsValid = false; // field is empty } else { // do your other validation tests here... } }
Server side code (C#):
protected void TextBoxDTownCity_Validate( object source, ServerValidateEventArgs args) { string v = TextBoxDTownCity.Text; if (v == string.Empty) { args.IsValid = false; // field is empty } else { // do your other validation tests here... } }
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