Validation

The Telerik UI for .NET MAUI entry control provides validation mechanism. If the user is entering a value not matching the requirements, the Entry will display an error message, which you can easily customize.

• IsValueValid(bool)—Specifies whether the Text entered inside the control is valid. The default value is true.

• ValidationErrorMessage(string)—Specifies the the error message which is displayed when the text entered inside the control is not valid.

<telerik:RadEntry ValidationErrorMessage="Value is not valid"
                  IsValueValid="False"
                  Placeholder="Enter text here"
                  PlaceholderColor="#99000000">
</telerik:RadEntry>

And the namespace used:

xmlns:telerik="http://schemas.telerik.com/2022/xaml/maui"

See Also

• Text Appearance
• Text Selection
• Events