Wpf DataGrid 怎么获取当前行中的某一个数据（VB.NET）

Question

大家好：

以前我是用Winform进行开发的，但为了适应不同分辨率转向了WPF。在Winform中有这么一个语句：

TextBox1.Text = DataGridView1.CurrentRow.Cells.Item(0).Value.ToString

这个语句返回DataGridView1当前所选行的列0的内容，但是WPF的DataGrid没有CurrentRow属性。各种链接数据准备都完成了。我想要实现这个功能，在WPF里面应该怎么做？

谢谢

Answer 1

使用 DataGird.SelectedItem 屬性比較接近 Windows Forms 的 DataGirdView.CurrentRow

參考:
https://docs.microsoft.com/zh-cn/dotnet/api/system.windows.controls.primitives.selector.selecteditem?view=netframework-4.7.2#System_Windows_Controls_Primitives_Selector_SelectedItem

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Answer 2

Hi   Aileen--1024,

在WPF中，单击DataGrid，你可以通过点击当前行获取当前行的数据，事实上获取的选中行是一个DataRowView，你可以通过以下的方法来获取选中行的数据.

var a =this.exDataGrid.selectItem;
var b= a as DataRowView;

如果你的DataGrid的ItemsSource是对象集合而不是DataTable的话，那么使用DataGrid.SelectedItem as YouClass就可以获得。

下面一个小例子：

XAML:

<Grid>
        <DataGrid x:Name="dgbing" ItemsSource="{Binding}"
            AutoGenerateColumns="False" Margin="0,0,0,107"   >
            <DataGrid.Columns>
                <DataGridTemplateColumn Header="EmployeeName" >
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding EmployeeName}"  ></TextBlock>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTextColumn Header="Colorsvalue" Binding="{Binding Colorsvalue}" x:Name="Colorsvalue"/>
            </DataGrid.Columns>
        </DataGrid>
        <Button Content="Button" HorizontalAlignment="Left" Margin="220,340,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1"/>
    </Grid>

XAML.VB:

Public Class datagridtestdemo
	Private jb2 As ObservableCollection(Of EmployeeColorT) = New ObservableCollection(Of EmployeeColorT)()

	Public Sub New()
		InitializeComponent()
		jb2.Add(New EmployeeColorT() With {
			.EmployeeName = "Job1",
			.Colorsvalue = "1"
		})
		jb2.Add(New EmployeeColorT() With {
			.EmployeeName = "Job2",
			.Colorsvalue = "2"
		})
		jb2.Add(New EmployeeColorT() With {
			.EmployeeName = "Job3",
			.Colorsvalue = "3"
		})
		dgbing.DataContext = jb2
	End Sub


	Private Sub Button_Click_1(sender As Object, e As RoutedEventArgs)
		Dim mySelectedElement As EmployeeColorT = dgbing.SelectedItem
		MessageBox.Show(mySelectedElement.EmployeeName)
	End Sub


End Class


Public Class EmployeeColorT


	Private _EmployeeName As String = String.Empty

	Public Property EmployeeName As String
		Get
			Return _EmployeeName
		End Get
		Set(ByVal value As String)

			If _EmployeeName <> value Then
				_EmployeeName = value

			End If
		End Set
	End Property

	Private _colorsvalue As String = String.Empty

	Public Property Colorsvalue As String
		Get
			Return _colorsvalue
		End Get
		Set(ByVal value As String)

			If _colorsvalue <> value Then
				_colorsvalue = value

			End If
		End Set
	End Property

	Public Sub New()
	End Sub

End Class

Best Regards,

Yong Lu

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