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<UserControl x:Class="DDCUI.CommDiagnosisWPFCtrl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" Height="800" Width="300">
    <StackPanel>
        <DataGrid MinHeight="300" MaxHeight="600" AutoGenerateColumns="False" Name="DGComm" CanUserResizeColumns="True" IsReadOnly="True" ItemsSource="{Binding Source=dataGridRows}">
            <DataGrid.Columns>
                <DataGridTextColumn Header="No." Binding="{Binding Number}" Width="0.1*"/>
                <DataGridTextColumn Header="Time" Binding="{Binding Time}" Width="0.1*" />
                <DataGridTextColumn Header="Protocol" Binding="{Binding Protocol}" Width="0.15*" />
                <DataGridTextColumn Header="Source" Binding="{Binding Source}" Width="0.15*" />
                <DataGridTextColumn Header="Destination" Binding="{Binding Destination}" Width="0.15*" />
                <DataGridTextColumn Header="Data" Binding="{Binding Data}" Width="0.5*" />
            </DataGrid.Columns>
        </DataGrid>
        <RichTextBox Height="150" Name="RtbHexCode"/>
        <TreeView  Height="200" Name="TreeViewDecode"/>

    </StackPanel>
</UserControl>

private void DGComm_SelectedCellsChanged(object sender, SelectedCellsChangedEventArgs e)
{
    //e.AddedCells[0].Column
    IList<DataGridCellInfo> cells = e.AddedCells;
    foreach (DataGridCellInfo di in cells)
    {
        DataRowView dvr = (DataRowView)di.Item;
        MessageBox.Show(di.ToString());
    }
}

我希望能够操作选定的单元格。我正在尝试打印单击的单元格的名称，但它在 DataRowView dvr = (DataRowView)di.Item; 上引发了无效的强制转换异常；说明我无法将 DataSource 转换为 RowView。

我该如何解决这个问题？

编辑：Itemsources 由提供

public ObservableCollection<object> dataGridRows = new ObservableCollection<object>();

private void InitProtocolParsers()
        {
            DGComm.ItemsSource = dataGridRows;
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1 回答 1

3

您访问的对象di.Item不是类型DataRowView，而是您绑定到的实际业务对象。因此，您放入的任何内容ObservableCollection<object>都可以通过di.Item".

试试看嘛

MessageBox.Show(di.Item.ToString())

我希望这会变得更清楚。

于 2012-07-24T06:24:03.927 回答