Checks the user's entry using validation logic that you write yourself. This type of validation enables you to check for values derived at run time.
Properties
ClientValidationFunction: Which JavaScript function that you want to check.
Example
1. Create a ASP.NET website then add Standard TextBox and CustomValidator.
2. Create your JavaScript Function for validate (For this example will check about input digits).
<! Example !!>
<head> <title>Test Validate</title>
<script language="JavaScript">
function checkDigit(source, agrs) {
if(agrs.Value.length < 8 || agrs.Value.length > 12)
args.IsValid = false;
else
args.IsValid = true;
}
</script></head>
3. Select your CustomValidator and set require properties for validate (see Table 1).
| Properties | Value |
|---|---|
| ClientValidationFunction | checkDigit |
| ControlToValidate | TextBox1 |
| ErrorMassage | Please input 8-12 characters |
Table 1: Require Properties for CustomValidator
4. Test your application you will see error message when you input wrong condition (Figure 1).
Figure 1: Custom Check Example
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