Xamarin.Forms Creating custom controls Creating custom Button
Example
/// <summary>
/// Button with some additional options
/// </summary>
public class TurboButton : Button
{
public static readonly BindableProperty StringDataProperty = BindableProperty.Create(
propertyName: "StringData",
returnType: typeof(string),
declaringType: typeof(ButtonWithStorage),
defaultValue: default(string));
public static readonly BindableProperty IntDataProperty = BindableProperty.Create(
propertyName: "IntData",
returnType: typeof(int),
declaringType: typeof(ButtonWithStorage),
defaultValue: default(int));
/// <summary>
/// You can put here some string data
/// </summary>
public string StringData
{
get { return (string)GetValue(StringDataProperty); }
set { SetValue(StringDataProperty, value); }
}
/// <summary>
/// You can put here some int data
/// </summary>
public int IntData
{
get { return (int)GetValue(IntDataProperty); }
set { SetValue(IntDataProperty, value); }
}
public TurboButton()
{
PropertyChanged += CheckIfPropertyLoaded;
}
/// <summary>
/// Called when one of properties is changed
/// </summary>
private void CheckIfPropertyLoaded(object sender, PropertyChangedEventArgs e)
{
//example of using PropertyChanged
if(e.PropertyName == "IntData")
{
//IntData is now changed, you can operate on updated value
}
}
}
Usage in XAML:
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="SomeApp.Pages.SomeFolder.Example"
xmlns:customControls="clr-namespace:SomeApp.CustomControls;assembly=SomeApp">
<StackLayout>
<customControls:TurboButton x:Name="exampleControl" IntData="2" StringData="Test" />
</StackLayout>
</ContentPage>
Now, you can use your properties in c#:
exampleControl.IntData
Note that you need to specify by yourself where your TurboButton class is placed in your project. I've done it in this line:
xmlns:customControls="clr-namespace:SomeApp.CustomControls;assembly=SomeApp"
You can freely change "customControls" to some other name. It's up to you how you will call it.
