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Getting Started

This article will guide you through the steps needed to add a basic RadMaskedInput control in your application and will provide information regarding the most important properties of the control.

1. Setting up the app

Take a look at these articles and follow the instructions to setup your app:

2. Adding the required Telerik references

You have two options:

If you don't want to add the all Telerik.UI.for.Xamarin nuget package, you have the option to add a separate nuget package. For RadMaskedInput control you have to install the Telerik.UI.for.Xamarin.Input nuget package. This nuget will automatically refer the Telerik.UI.for.Xamarin.Primitives, Telerik.UI.for.Xamarin.Common, and Telerik.UI.for.Xamarin.DataControls nuget packages.

  • Add the references to Telerik assemblies manually, check the list below with the required assemblies for RadMaskedInput component:
Platform Assemblies
Portable Telerik.XamarinForms.Common.dll
Android Telerik.Xamarin.Android.Common.dll
iOS Telerik.Xamarin.iOS.dll
UWP Telerik.Core.dll

3. Adding RadMaskedInput control

If your app is setup, you are ready to add a RadMaskedInput control.

The RadMaskedInput control exposes a MaskType property which can be either "Text" or "Regex". It controls the type of the validation. If you choose to use a Text type, the Mask of the control should be set by utilizing the Mask Tokens. In case you decide to use a Regex for validating the input, you should set such to the Mask property as demonstrated in the RegEx Vaidation topic.

Here is an example how to add RadMaskedInput control with Text MaskType:

<telerikInput:RadMaskedInput x:Name="maskedInput"
                             Mask="(CC) 00"

In addition to this you need to add the following namespace:

using Telerik.XamarinForms.Input;

This is the result: Getting started

4. Important Properties

The RadMaskedInput control exposes the following properties which you can configure:

  • MaskType(of type Telerik.XamarinForms.Input.MaskedInput.MaskType): Defines the expected validation type of the Mask. Here are the two options:
    • Text (for Tokens validation)
    • Regex (for RegEx validation)
  • Mask(string): Specifies a string defining the mask. In case of using Text validation, you should use the available Mask Tokens. Otherwise, a regular expression should be set.
  • IsMaskFull(bool): Gets a value indicating if all required symbols are filled. The default value is true. Can be false only when required symbols tokens are present in the mask. (ReadOnly)
  • InputValue(string): Defines the input value.
  • IsInputAccepted(bool): Gets a value indicating whether the input matches the mask.(ReadOnly)
  • WatermarkText(string): Specifies the text used as watermark.
  • WatermarkTextColor(Color): Specifies the color of the text of the watermark.
  • DisplayedText(string): Gets the displayed text.(ReadOnly)
  • DisplayedTextColor(Color): Defines the color of the displayed text.
  • DisplayedTextFont(string): Defines the font of the displayed text.
  • DisplayedTextFontSize(double): Defines the size of the font used for the displayed text.
  • BorderStyle(of type Telerik.XamarinForms.Input.BorderStyle) Gets or sets a Telerik.XamarinForms.Input.RadMaskedInput.BorderStyle defining the look of the border around the entry. The default value is defined by the OS.
  • Placeholder(char): Specifies the symbol that will be used to mark an empty position. The default value is '_'.
  • InvalidInputErrorText(string): Defines the text that is shown as error message on invalid input.
  • ErrorColor(Color): Specifies the color of the error text.
  • ErrorFontSize(double): Specifies the font size of the error text.
  • RejectedSymbolErrorText(string): Defines the error text when a symbol was rejected.
  • IsErrorTextVisible(bool): Gets a value indicating whether the error text is visible. (ReadOnly)

SDK Browser and QSF applications contain different examples that show RadMaskedInput's main features. You can find the applications in the Examples and QSF folders of your local Telerik UI for Xamarin installation.

See Also

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