How to change BorderWidth of NumericUpDown by using Custom Renderer
Syncfusion SfNumericUpDown in Xamarin has the option to change border width by using custom renderer.
To change BorderWidth of NumericUpDown by using Custom Renderer please follow the below given procedure:
Step 1: Add the xaml content given below in the main xaml page.
Step 2: Create Renderer file and add the OnElementChange event on the required platform which you need. The code for OnElementChange event for each platform is given in the code illustrates.
The below code illustrates how to change border width of NumericUpDown by using custom renderer.
Add the below content in the Main xaml file.
XAML Code
xmlns:local="clr-namespace:NumericUpDown_CustomRenderer" xmlns:numeric="clr-namespace:Syncfusion.SfNumericUpDown.XForms;assembly=Syncfusion.SfNumericUpDown.XForms"
C# Code
<ContentPage.Content> <StackLayout Padding="30"> <local:NumericUpDown x:Name="sfNumericUpDown" HeightRequest="100" Value="100" AllowNull="false" FormatString="n"/> </StackLayout> </ContentPage.Content> </ContentPage>
Add the below content in the Android renderer file
namespace NumericUpDown_CustomRenderer.Droid
{
class Numeric_Renderer : SfNumericUpDownRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<SfNumericUpDown> e)
{
base.OnElementChanged(e);
if (Control != null)
{
for (int i = 0; i < Control.ChildCount; i++)
{
var child = Control.GetChildAt(i);
if (child is EditText)
{
var control = child as EditText;
GradientDrawable drawable = new GradientDrawable();
drawable.SetShape(ShapeType.Rectangle);
drawable.SetColor(Android.Graphics.Color.White);
drawable.SetCornerRadius(20);
drawable.SetStroke(1, Android.Graphics.Color.Black);
Control. Background = drawable;
}
}
}
}
}
}
Add the below content in the .ios renderer file
namespace NumericUpDown_CustomRenderer.iOS
{
public class Numeric_Renderer : SfNumericUpDownRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<SfNumericUpDown> e)
{
base.OnElementChanged(e);
if (Control != null)
{
Control.Layer.BorderWidth = 1;
}
}
}
}
Add the below content in the .UWP renderer file
namespace NumericUpDown_CustomRenderer.UWP
{
public class Numeric_Renderer : SfNumericUpDownRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<SfNumericUpDown> e)
{
base.OnElementChanged(e);
if (Control != null)
{
Control.BorderThickness = new Windows.UI.Xaml.Thickness(10);
}
}
}
}
Image for NumericUpDown:
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