The Entry control defines a Keyboard property that allows an app to select the virtual keyboard that is displayed for the control. For example, a keyboard for entering a phone number should be different from a keyboard for entering an email address.

Specifying a virtual Keyboard

The Keyboard property is of type Keyboard. This class defines read-only properties that are appropriate for different keyboard uses:

• Default
• Text
• Chat
• Url
• Email
• Telephone
• Numeric

Default Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Default. This specifies that the default virtual keyboard will be displayed. This keyboard is displayed if a Keyboard property isn’t specified.

<Entry Keyboard="Default" />

The Default keyboard is shown below for the three phone platforms.

Text Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Text. This specifies that a virtual keyboard suitable for entering text will be displayed.

<Entry Keyboard="Text" />

The Text keyboard is shown below for the three phone platforms.

Chat Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Chat. This specifies that a virtual keyboard suitable for chatting will be displayed.

<Entry Keyboard="Chat" />

The Chat keyboard is shown below for the three phone platforms.

Url Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Url. This specifies that a virtual keyboard suitable for entering a URL will be displayed.

<Entry Keyboard="Url" />

The Url keyboard is shown below for the three phone platforms.

Email Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Email. This specifies that a virtual keyboard suitable for entering an email address will be displayed.

<Entry Keyboard="Email" />

The Email keyboard is shown below for the three phone platforms.

Telephone Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Telephone. This specifies that a virtual keyboard suitable for entering a phone number will be displayed.

<Entry Keyboard="Telephone" />

The Telephone keyboard is shown below for the three phone platforms.

Numeric Keyboard

In the code building the user interface for a page, add a Keyboard property to an Entry, and set the property to Numeric. This specifies that a virtual keyboard suitable for entering numeric data will be displayed.

<Entry Keyboard="Numeric" />

The Numeric keyboard is shown below for the three phone platforms.

Specifying additional keyboard options

The Create method of the Keyboard class accepts a KeyboardFlags enumeration that specifies additional keyboard options such as capitalization, spellcheck, and suggestions.

Sentence capitalization

In the code building the user interface for a page, add a Keyboard property to an Entry, and use the Create method to specify the CapitalizeSentence constant of the KeyboardFlags enumeration. This specifies that the first words of sentences will be automatically capitalized.

Content = new StackLayout {
  Padding = new Thickness(0,20,0,0),
  Children = {
    new Entry { Keyboard = Keyboard.Create(KeyboardFlags.CapitalizeSentence) }
  }
};

Spellcheck

In the code building the user interface for a page, add a Keyboard property to an Entry, and use the Create method to specify the SpellCheck constant of the KeyboardFlags enumeration. This specifies that a spellcheck will be performed on text that the user enters.

Content = new StackLayout {
  Padding = new Thickness(0,20,0,0),
  Children = {
    new Entry { Keyboard = Keyboard.Create(KeyboardFlags.Spellcheck) }
  }
};

Suggestions

In the code building the user interface for a page, add a Keyboard property to an Entry, and use the Create method to specify the Suggestions constant of the KeyboardFlags enumeration. This specifies that suggested word completions will be offered on text that the user enters.

Content = new StackLayout {
  Padding = new Thickness(0,20,0,0),
  Children = {
    new Entry { Keyboard = Keyboard.Create(KeyboardFlags.Suggestions) }
  }
};

All

In the code building the user interface for a page, add a Keyboard property to an Entry, and use the Create method to specify the All constant of the KeyboardFlags enumeration. This specifies that the first words of sentences will be automatically capitalized, that a spellcheck will be performed on text that the user enters, and that suggested word completions will be offered on text that the user enters.

Content = new StackLayout {
  Padding = new Thickness(0,20,0,0),
  Children = {
    new Entry { Keyboard = Keyboard.Create(KeyboardFlags.All) }
  }
};

Summary

This recipe shows how to display a virtual keyboard that is appropriate for the input text type, and how to specify additional keyboard options such as capitalization, spellcheck, and suggestions.

Ref
https://developer.xamarin.com