Enable/Disable asp:validators using jquery

Question

I am working with a wizard, where the user can sign up. There is a asp:RadioButtonList with two options, and some of the input fields in the wizard changes when the radiobut

Answer 1

You can disable the validator like described in these posts:

http://www.aspdev.org/articles/asp.net-server-controls-disable-validation/

http://www.willasrari.com/blog/use-client-side-javascript-to-disable-aspnet-validators/000289.aspx

best regards

Answer 2

use CustomValidator control for "RadioButtonList1" and separate controls visibilty logic to another javascript function.

<div id="divTxt1">
    <asp:TextBox runat="server" CssClass="text" ID="txtNumber" type="number"/>
</div>
<div id="divTxt2">
<asp:TextBox runat="server" CssClass="text" ID="txtNumber2"
type="number"/>
</div>
<div id="radio">
    <asp:RadioButtonList ID="RadioButtonList1" runat="server"     RepeatDirection="Horizontal"      onchange:"javascript:toogleTexxBoxesVisibility(this);">
   <asp:ListItem Value="1" Selected="True">Privat</asp:ListItem>
   <asp:ListItem Value="2">Offentlig</asp:ListItem>
   </asp:RadioButtonList>
<asp:CustomValidator ID="CustomValidator1" runat="server"     ClientValidationFunction="clientSideValidationFunction" ControlToValidate="RadioButtonList1" OnServerValidate="CustomValidator1_ServerValidate" Text="Validation Error Message">asp:CustomValidator>

<script type="text/javascript">
function clientSideValidationFunction(source,arguments)
    var inputvalue = arguments.Value; //RadioButtonList1's value

   if (inputvalue == "1" && $('#txtNumber').val() == '') {
        arguments.IsValid = false;
   }
   else if (inputvalue == "2" && $('#txtNumber2').val() == '') {
        arguments.IsValid = false;
   }
   else {
        arguments.IsValid = true;
   }
};

function toogleTexxBoxesVisibility(radiobutton)
{
   if(radiobutton.val =='1')
   {
      $('#txtNumber').show('fast');
      $('#txtNumber2').hide('fast'); 
   }
  else if(radiobutton.val =='2')
  {
       $('#txtNumber').hide('fast');
       $('#txtNumber2').show('fast'); 
  }
}
</script>
</div>

Answer 3

I found a better option was to use simply:

document.getElementById("<%=myValidator.ClientID %>").enabled = true;

The ValidatorEnabled option as suggested above automatically calls the validation of the linked control and in my case shows the error message "please enter a value for seller name" which wasn't necessary or desired..

Using the ".enabled = true" option doesn't.

Answer 4

The client side API for validators is here.

Something you may be able to adapt to your needs (this will disable all the validators via client script):

if (Page_Validators) {
    PageValidators.forEach(function(pageValidator) {
        if (pageValidator == null) {return;}
        vldGrp = pageValidator.validationGroup;
        ValidatorEnable(pageValidator, false);
    });
};

So you could add a if block to check the validator name, or more so the .controlToValidate which returns the target ID of the validator - then disable it:

if (Page_Validators) {
    PageValidators.forEach(function(pageValidator) {
        if (pageValidator == null) {return;}
        if (pageValidator.controltovaliddate != "<%= txtNumber2.ClientID %>") {
            return;
        }
        ValidatorEnable(pageValidator, false);
    });
};

---

You should also probably add a break in the loop if it's right one, if you don't need to check any further validators. You can use .some instead of .forEach to break early:

if (Page_Validators) {
    PageValidators.some(function(pageValidator) {
        if (pageValidator == null) {return false;}
        if (pageValidator.controltovaliddate != "<%= txtNumber2.ClientID %>") {
            return false;
        }
        ValidatorEnable(pageValidator, false);
        return true;
    });
};

---

You can encapsulate this into a function:

var validatorState = function(element, isEnabled) {
    if (Page_Validators) {
        PageValidators.some(function(pageValidator) {
            if (pageValidator == null) {return false;}
            if (pageValidator.controltovaliddate != "<%= txtNumber2.ClientID %>") {
                return false;
            }
            ValidatorEnable(pageValidator, false);
            return true;
        });
    };
};

and use:

validatorState('txtCancellationReson', true);

or

validatorState($('#txtCancellationReson').attr('id'), true);