ASPxClientEdit.SetErrorText(errorText) Method

Sets the error text to be displayed within the editor’s error frame if the editor’s validation fails.

Declaration

SetErrorText(
    errorText: string
): void

Parameters

Name	Type	Description
errorText	string	A string value representing the error text.

Example

The code sample below implements custom validation without using any predefined validation capabilities. Note that you should set the ValidationSettings.EnableCustomValidation property to true to show an error frame.

JS

function OnAgeValidation(s, e) {
     var age = tbAge.GetText();
     if (age == null || age == "")
          return;
     var digits = "0123456789";
     for (var i = 0; i < age.length; i++) {
          if (digits.indexOf(age.charAt(i)) == -1) {
               tbAge.SetIsValid(false);
               break;
          }
     }
     if (tbAge.GetIsValid() && age.charAt(0) == '0') {
          age = age.replace(/^0+/, "");
          if (age.length == 0)
               age = "0";
          tbAge.SetText(age);

     }
     if (age < 18) {
          tbAge.SetIsValid(false);
          tbAge.SetErrorText('Age must be greater than or equal 18');
     }
}

ASPX

<dx:ASPxTextBox ID="ASPxTextBox1" runat="server" Width="170px" ClientInstanceName="tbAge">
     <ValidationSettings ValidateOnLeave="False" EnableCustomValidation="True">
     </ValidationSettings>
</dx:ASPxTextBox>

<dx:ASPxButton ID="btnValidate" runat="server" AutoPostBack="False" Text="Validate">
     <ClientSideEvents Click="OnAgeValidation" />
</dx:ASPxButton>