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How to bind value in NumerictextBox?

Platform: Xamarin.Forms |
Control: SfNumericTextBox |
Published Date: August 26, 2016 |
Last Revised Date: October 19, 2021

To bind the value in NumericTextBox using MVVM pattern, follow the given steps:

Step 1:  Create the Xamarin forms sample.

Step 2: Install the NumericTextBox NuGet from nuget.org and include the NumericTextBox namespace.

Step 2: Create a ViewModel class and add a property to bind the Value property in NumericTextBox as mentioned in the below code sample.


//ViewModel class
public class ViewModel : INotifyPropertyChanged
 public event PropertyChangedEventHandler PropertyChanged;
 private float _value=5;
 public float Value
     get{ return _value;}
     set{_value = value;RaisePropertyChanged ();}
            protected void RaisePropertyChanged([CallerMemberName]string propertyName = "")
   if (this.PropertyChanged != null)
      this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));


The ViewModel class should extends INofityPropertyChanged, implement its event and raised from Value's property setter as like above snippet, then only we can get the property changing notifications.

Step 3: Set the BindingContext to ViewModel.


    <local:ViewModel />


Step 4: Initialize the SfNumericTextBox control and bind the value property as shown in the below code sample.


    <StackLayout >
        <syncfusion:SfNumericTextBox x:Name="numericTextBox" 
                                                             Value="{Binding Value, Mode=TwoWay}"
                                                             VerticalOptions="Center" />




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Seth Isaacks
Nov 05, 2020

How do you bind with MVVM????????? I have tried MULITPLE time to wind to the VALUE and it displays the value but will NOT update the value


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