Recovery Steps Change Custom Validator Error Message To JavaScript

November 3, 2021 By Justin Fernando Off

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If you see a custom validator error message when you change the javascript error code on your computer, then you need to read these troubleshooting tips.

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I am using a custom validator to call a javascript function due to validation. My problem is that I need to be able to dynamically change the error message in a positive direction. Here is the code:

                  FcnValid role (source, arguments)        var Status = document.getElementById ("<% = ddlStatus.ClientID%>"). value        if (Status == "Subscribed")            if (document.getElementById ("<% = txtRequestor.ClientID%>"). value == "")                //sender.errormessage means "Test1"                //sender.innerHTML implies "Test2";                document.getElementById ("<% = txtRequestor.ClientID%>"). focus ();                args.IsValid = false;

In this article, I explain how you can dynamically change ASP-related error messages. Net. Custom validator with JavaScript.

To illustrate the operation with an example, I have prepared a simple form in which a man or woman dMust enter either a phone number or a mobile phone number, as appropriate. Whichever he chooses, the ASP.CustomValidator network sales validation message can be dynamically changed using JavaScript.

In each of the HTML markup below, I have all the RadioButtonList types for the user to dial, enter a phone number, or cell phone number that should be number, and there is always a text field for the corresponding phone and mobile number, and a custom validator for which I am happy, do not set the ErrorMessage property as a string.

Dynamically changing the error of publishing custom ASP.Net validator when using JavaScript

Below is the client JavaScript validation function that is actually executed by the CustomValidator.

I first identified a typical error message that would be improved if the user does not often select a numeric phone number in the RadioButtonList.

Then, depending on what he is sending, like a phone number or a mobile number, he will see his own error message when it leaves the appropriate text. field.

2. Error in the message. The phone number is saved and the corresponding text box is still blank

3 errors when choosing a target phone number and leaving the text field blank

Note. The CustomValidator is rendered in HTML SPAN format, so I used the innerHTML property to complete the d ‘error message. …

Here I will explain how to change the messaging error of a custom validator dynamically buying asp.net.

I have a textbox, an alternative and a custom validator to define a textbox when the user clicks a button.

In customvalidator, I took ClientValidationFunction = “ClientValidationFunction”. This client function usesIt is in the marketplace to dynamically send error messages by receiving a sender object. The sender of this object actually displays the error message dynamically.

var errorMessag e. = “‘” + e.Value + “‘ turned out to be an invalid value.”;

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