Getting Started of Xamarin.Android NumericUpDown(SfNumericUpDown)

18 Nov 20183 minutes to read

This section provides overview for working with Essential^® NumericUpDown for Xamarin.Android. You can walk through the entire process of creating a SfNumericUpDown.

Referencing Essential Studio^® Components in Your Solution

After installing Essential Studio^® for Xamarin, you can find all the required assemblies in the installation folders,

{Syncfusion Installed location}\Essential Studio\12.4.0.24\lib

Add the following assembly references to the Android project,

android\Syncfusion.SfNumericUpDown.Android.dll

Add SfNumericUpDown

The SfNumericUpDown control configured entirely in C# code or using the AXML markup. The following steps explain how to create a SfNumericUpDown and configure their elements.

Add the following code in the Main.axml to include NumericUpDown control.

XAML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical"
	android:layout_width="match_parent"
	android:layout_height="match_parent">

        <com.syncfusion.numericupdown.SfNumericUpDown 
	android:id="@+id/sfNumericUpDown"    
	android:layout_height="wrap_content" 
	android:layout_width="fill_parent" />

</LinearLayout>

In MainActivity, you can access the NumericUpDown instance defined in axml page using the following code.

C#

using Com.Syncfusion.NumericUpDown;

..

public class MainActivity : Activity
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
    
        base.OnCreate(savedInstanceState);

        SetContentView(Resource.Layout.content_main);

        SfNumericUpDown numericUpDown = (SfNumericUpDown)FindViewById(Resource.Id.sfNumericUpDown);

        numericUpDown.Value = 30;
    }
}

Also, you can create the NumericUpDown control using the code behind. The following steps help to add NumericUpDown control using the code behind.

• Adding reference to NumericUpDown.

  C#

  using Com.Syncfusion.NumericUpDown;

• Create an instance of SfNumericUpDown.

  C#

  SfNumericUpDown numeric = new SfNumericUpDown(this);
  SetContentView(numeric);

Set Value

The SfNumericUpDown control display value can be set using Value property.

C#

numeric.Value= 5;

Enable Parsing Mode

The value of the SfNumericUpDown can be parsed based on the ParsingMode property.

The ParsingMode is of type Parsers containing enum values of Double and Decimal.

C#

numeric.ParsingMode=Parsers.Decimal;

Add Format String

The FormatString property determines the format specifier by which the display text has to be formatted.

It has three types,

• c - Display the value with currency notation.
• n – Display the value in number format.
• p – Display the value in Percentage.

The control displays the formatted text on lost focus. Default Value of FormatString is “n”.

C#

numeric.FormatString= “c”;