Delete row button in WPF DataGrid requires two clicks instead of one

Question

I have a DataGrid with a delete button for each row, hooked to the Delete command. The button needs to be clicked twice to delete the row, which is not what I would like.

According to Snoop the button's IsEnabled == false initially, the first click enables it. This would seem to be the problem, so how can I make the button enabled before the user clicks?

I tried using a trigger to change IsEnabled, this is commented out in the code below, it didn't work.

Window1.xaml

<Window x:Class="WpfApp1.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp1"
        mc:Ignorable="d"
        Title="Window1" Height="450" Width="800">
    <Grid>
        <DataGrid HorizontalAlignment="Left" Height="399" Margin="10,10,0,0" 
                  VerticalAlignment="Top" Width="772"
                  x:Name="dataGrid1" 
                  ItemsSource="{Binding ProxyServers}" 
                  CanUserAddRows="True" 
                  CanUserDeleteRows="True"
                  >
            <DataGrid.Columns>
                <DataGridTemplateColumn Width="SizeToCells">
                    <DataGridTemplateColumn.CellStyle>
                        <Style TargetType="{x:Type DataGridCell}" 
                            BasedOn="{StaticResource {x:Type DataGridCell}}">
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type DataGridCell}">

                                        <Button Command="DataGrid.DeleteCommand"  
                                            IsEnabled="True" x:Name="deleteButton" 
                                            Content="X">
                                           <!-- Make the button enable on mouse over?
                                                Didn't work.
                                                <Button.Style>
                                                <Style TargetType="Button">
                                                    <Style.Triggers>
                                                        <Trigger Property="IsMouseOver" 
                                                           Value="true">
                                                            <Setter Property="IsEnabled" 
                                                               Value="true" />
                                                        </Trigger>
                                                    </Style.Triggers>
                                                </Style>
                                            </Button.Style>-->
                                        </Button>

                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                            <Setter Property="IsEnabled" Value="True"/>

                        </Style>
                    </DataGridTemplateColumn.CellStyle>
                </DataGridTemplateColumn>

            </DataGrid.Columns>
        </DataGrid>

    </Grid>
</Window>

Window1.xaml.cs

using System.ComponentModel;
using System.Windows;


namespace WpfApp1
{

    public partial class Window1 : Window
    {
        BindingList<Proxy> proxyServers;

        public Window1()
        {
            InitializeComponent();
            dataGrid1.DataContext = this;

            proxyServers = new BindingList<Proxy>();
            proxyServers.Add(new Proxy() { LocalURL = "http://localhost" });
        }

        public BindingList<Proxy> ProxyServers { get => proxyServers; set => proxyServers = value; }
    }

    public class Proxy
    {
        string localURL;

        public string LocalURL { get => localURL; set => localURL = value; }
    }
}

Answer 1

Have you considered something more like:

    <DataGridTemplateColumn Header="Delete">
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <Button Command="{Binding Deletecommand}"

You could use relativesource if you want the command in the parent view's daracontext. Pass the bound row object with commandparameter.