validation.md

title	page_title	description	position	slug
Validation Message	.NET MAUI MaskedEntry Documentation - Validation Message	Learn more about the built-in validation error messages and how to define a custom error message in the Telerik UI for .NET MAUI MaskedEntry.	7	maskedentry-validation

.NET MAUI MaskedEntry Validation Message

The Telerik MaskedEntry for .NET MAUI provides a built-in validation message. If the user is entering an input that does not match the mask requirements, the MaskedEntry will display an error message.

Default Error Message

The MaskedEntry supports a default validation error message that is based on the used masked type:

• EmailMaskedEntry—Supports the E-Mail is not valid error message.

• RegexMaskedEntry—Supports the Input does not match the regex error message.

Custom Error Message

To customize the default validation error message, use the ValidationErrorMessage(string) property.

• Custom Validation Error Message for the EmailMaskedEntry

• Custom Validation Error Message for the RegexMaskedEntry

For the MaskedEntry Validation Error Message example, go to the [SDKBrowser Demo Application]({%slug sdkbrowser-app%}) and navigate to MaskedEntry -> Features category.

See Also

• [Mask Types]({%slug maskedentry-masked-types%})
• [Setting Value]({%slug maskedentry-value%})
• [Null Values Support]({%slug maskedentry-value%}#null-value-support})
• [Prompt Character]({%slug maskedentry-prompt-character%})
• [Events]({%slug maskedentry-events%})
• [Globalization]({%slug maskedentry-globalization%})