Button command is not working with Binding context in xamarin forms using MVVM

Sindhu Kalyanapu 21 Reputation points

If we give BindingContext value for button , then button command is not hitting on click event in xamarin forms with MVVM architecture.

From the below code snippet I have given BindingContext value as 1. So, when I click on Button the command is not working


                            <Button BindingContext="1" Text="Retry" Command="{Binding PairConductorSensorCommand}" HorizontalOptions="FillAndExpand" IsVisible="False" Style="{StaticResource FormButton}"/>

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Accepted answer
  1. Leon Lu (Shanghai Wicresoft Co,.Ltd.) 53,756 Reputation points Microsoft Vendor


    You can do this by adding Xamarin.Forms Bindable Properties when you create BorderlessEntry.cs like following code.

    public class BorderlessEntry : Entry
            public static readonly BindableProperty ControlIndexProperty =
      BindableProperty.Create("ControlIndex", typeof(int), typeof(BorderlessEntry), -1);
            public int ControlIndex
                get { return (int)GetValue(ControlIndexProperty); }
                set { SetValue(ControlIndexProperty, value); }

    Then you can set ControlIndex="1" in the xaml like following code, please remove the BindingContext="1"

          <local:BorderlessEntry x:Name="tbx_Conductor_Sensor_MAC_ID_1"  ControlIndex="1" Text="{Binding TbxConductorSensorMacID1Text}">

    Then you can get this BorderlessEntry in the viewmodel and get the controlindex as well.

    ConductorSensorMacIDTextChangeCommand = new Command((e) =>
                   BorderlessEntry rs = e as BorderlessEntry;
                   Console.WriteLine("============"+rs.ControlIndex + "============");

    Best Regards,

    Leon Lu

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