你应该使用DataGridTemplateColumn而不是像这样的DataGridTextColumn：

 <   DataGrid  >  
<   DataGrid.Columns  >  
<   DataGridTemplateColumn  >  
<   DataGridTemplateColumn.CellEditingTemplate  >  
<   DataTemplate  >  
<   DataGrid     /  >  
<   / DataTemplate  >  
<   / DataGridTemplateColumn.CellEditingTemplate  >  
<   DataGridTemplateColumn.CellTemplate  >  
<   DataTemplate  >  
&lt ;   TextBlock     /  >  
<   / DataTemplate  >  
<   / DataGridTemplateColumn.CellTemplate  >  
<   / DataGridTemplateColumn  >  
<   / DataGrid。列 >  
<   / DataGr id  >  

希望这会有帮助

want to include listbox in wpf datagrid control when datgrid click the cell, as like as outlook calander.

My Xaml Code

<DataGrid Name="Grid1" Height="550" Width="850" AutoGenerateColumns="False" CanUserResizeRows="False" CanUserDeleteRows="False" CanUserAddRows="False" AreRowDetailsFrozen="False" SelectionUnit="CellOrRowHeader" SelectedCellsChanged="Grid1_SelectedCellsChanged" CellEditEnding="Grid1_CellEditEnding" LoadingRow="Grid1_LoadingRow" SelectionMode="Extended">
            <DataGrid.RowHeaderTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center">  
                        <TextBlock Text="{Binding RelativeSource={RelativeSource Mode=FindAncestor, 
                                      AncestorType={x:Type DataGridRow}}, 
                                      Path=Item.Time}" FontSize="16"  />
                        <TextBlock Text="00" Foreground="#9493CF"   />
                    </StackPanel>
                </DataTemplate>
            </DataGrid.RowHeaderTemplate>
            <DataGrid.Style>
                <Style TargetType="DataGrid">
                    <Setter Property="AlternatingRowBackground" Value="LightYellow"/>
                </Style>
            </DataGrid.Style>
            <DataGrid.Columns>
                <DataGridTextColumn Header="Sunday" Binding="{Binding Sunday}" />
                <DataGridTextColumn Header="Monday" Binding="{Binding Monday}" />
                <DataGridTextColumn Header="Tuesday" Binding="{Binding Tuesday}" />
                <DataGridTextColumn Header="Wednesday" Binding="{Binding Wednesday}" />
                <DataGridTextColumn Header="Thursday" Binding="{Binding Thursday}" />
                <DataGridTextColumn Header="Friday" Binding="{Binding Friday}" />
                <DataGridTextColumn Header="Saturday" Binding="{Binding Saturday}" />
            </DataGrid.Columns>
            <DataGrid.ContextMenu>
                <ContextMenu x:Name="LeftClickMenu">
                    <MenuItem Header="New Appointment" Click="MenuItem_Click"/>                  
                    <Separator/>
                    <MenuItem Header="Exit"/>
                </ContextMenu>
            </DataGrid.ContextMenu>
        </DataGrid>

You should use DataGridTemplateColumn instead of a DataGridTextColumn like this :

<DataGrid>
                                                            <DataGrid.Columns>
                                                                <DataGridTemplateColumn>
                                                                    <DataGridTemplateColumn.CellEditingTemplate>
                                                                        <DataTemplate>
                                                                            <DataGrid />
                                                                        </DataTemplate>
                                                                    </DataGridTemplateColumn.CellEditingTemplate>
                                                                    <DataGridTemplateColumn.CellTemplate>
                                                                        <DataTemplate>
                                                                            <TextBlock />
                                                                        </DataTemplate>
                                                                    </DataGridTemplateColumn.CellTemplate>
                                                                </DataGridTemplateColumn>
                                                            </DataGrid.Columns>
                                                        </DataGrid>

Hope this helps