无法处理UWP中的MyToolKit.Extended DataGrid

Question

我正在开发一个UWP应用程序。在这里，我想在下面的表格中显示数据，

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在这里，我的目的是搜索项目并将它们添加到这个网格中。如果我单击四舍五入按钮(红色是一个数据标题模板)，它的工作状态很好，但是如果网格包含一些数据--如果我单击圆形图像按钮，得到非手工引导的异常，

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这里我把我用过的代码，

<controls:DataGrid x:Name="dgNewBill" Grid.Row="0" Grid.Column="0" MinHeight="500" HorizontalAlignment="Left" HeaderBackground="Black"  DefaultOrderIndex="1" Background="Black" RowBackgroundEvenBrush="Black" RowBackgroundOddBrush="Black" >
                                <controls:DataGrid.RowStyle>
                                    <Style TargetType="ListBoxItem">
                                        <Setter Property="Padding" Value="0"></Setter>
                                        <Setter Property="HorizontalAlignment" Value="Stretch"></Setter>
                                    </Style>
                                </controls:DataGrid.RowStyle>

                                <controls:DataGrid.Columns>
                                    <controls:DataGridTextColumn Width="50" Binding="{Binding SNumber}" Foreground="White"
                     IsAscendingDefault="False" CanSort="False">
                                        <controls:DataGridTextColumn.Header>
                                            <Button x:Uid="RSNO" Height="40"  Width="50" HorizontalAlignment="Left" Style="{StaticResource RoundButtonTemplate}" Margin="-10,0,0,0"/>
                                        </controls:DataGridTextColumn.Header>
                                        <controls:DataGridTextColumn.Style>
                                            <Style TargetType="TextBlock">
                                                <Setter Property="TextAlignment" Value="Center"></Setter>
                                            </Style>
                                        </controls:DataGridTextColumn.Style>
                                    </controls:DataGridTextColumn>

                                    <!--Item Column-->
                                    <controls:DataGridTextColumn Width="380" Binding="{Binding description}" Foreground="White" CanSort="False">
                                        <controls:DataGridTextColumn.Header>
                                            <Button x:Uid="RItem"  Height="40" Width="380"   Style="{StaticResource RoundButtonTemplate}"  Margin="-12,0,0,0"/>
                                        </controls:DataGridTextColumn.Header>
                                        <controls:DataGridTextColumn.Style>
                                            <Style TargetType="TextBlock">
                                                <Setter Property="TextAlignment" Value="Center"></Setter>
                                            </Style>
                                        </controls:DataGridTextColumn.Style>
                                    </controls:DataGridTextColumn>
                                    <!--UOM column-->
                                    <controls:DataGridTextColumn Width="120" Binding="{Binding uom}" Foreground="White" CanSort="False">
                                        <controls:DataGridTextColumn.Header>
                                            <Button x:Uid="RUOM" Height="40" Width="120"  Style="{StaticResource RoundButtonTemplate}"  Margin="-12,0,0,0"/>
                                        </controls:DataGridTextColumn.Header>
                                        <controls:DataGridTextColumn.Style>
                                            <Style TargetType="TextBlock">
                                                <Setter Property="TextAlignment" Value="Center"></Setter>
                                            </Style>
                                        </controls:DataGridTextColumn.Style>
                                    </controls:DataGridTextColumn>
                                    <!--Price Column-->
                                    <controls:DataGridTemplatedColumn>
                                        <controls:DataGridTemplatedColumn.Header>
                                            <Button x:Uid="RPrice" Height="40" Width="110"  Style="{StaticResource RoundButtonTemplate}"  Margin="-12,0,0,0"/>
                                        </controls:DataGridTemplatedColumn.Header>
                                        <controls:DataGridTemplatedColumn.CellTemplate>
                                            <DataTemplate>
                                                <StackPanel Name="pricePanel" Width="110" Height="30" Tapped="pricePanel_Tapped" >
                                                    <TextBlock Name="price" Foreground="White"  Text='{Binding price}' VerticalAlignment="Center" HorizontalAlignment="Center" Margin="0,5,0,0"></TextBlock>
                                                </StackPanel>
                                            </DataTemplate>
                                        </controls:DataGridTemplatedColumn.CellTemplate>
                                    </controls:DataGridTemplatedColumn>


                                     <!--Qty Column-->
                                    <controls:DataGridTemplatedColumn>
                                        <controls:DataGridTemplatedColumn.Header>
                                            <Button x:Uid="RQty" Height="40" Width="110"  Style="{StaticResource RoundButtonTemplate}"  Margin="-25,0,0,0"/>
                                        </controls:DataGridTemplatedColumn.Header>
                                        <controls:DataGridTemplatedColumn.CellTemplate>
                                            <DataTemplate>
                                                <StackPanel Name="quantityPanel" Width="50" Height="30" Tapped="quantityPanel_Tapped">
                                                    <TextBlock Name="quantity" Foreground="White"  Text='{Binding quantity}' VerticalAlignment="Center" Margin="0,5,0,0"></TextBlock>
                                                </StackPanel>
                                            </DataTemplate>
                                        </controls:DataGridTemplatedColumn.CellTemplate>
                                    </controls:DataGridTemplatedColumn>

                                    <!--Discount Column-->
                                    <controls:DataGridTemplatedColumn>
                                        <controls:DataGridTemplatedColumn.Header>
                                            <Button x:Uid="Rdiscount" Height="40" Width="60"  Style="{StaticResource RoundButtonTemplate}"  Margin="-25,0,0,0"/>
                                        </controls:DataGridTemplatedColumn.Header>
                                        <controls:DataGridTemplatedColumn.CellTemplate>
                                            <DataTemplate>
                                                <StackPanel Name="discountPanel" Width="60" Height="30" Tapped="discountPanel_Tapped" >
                                                    <TextBlock Name="Discount" Foreground="White" Text='{Binding discount}' VerticalAlignment="Center" HorizontalAlignment="Center" Margin="0,5,0,0"></TextBlock>
                                                </StackPanel>
                                            </DataTemplate>
                                        </controls:DataGridTemplatedColumn.CellTemplate>
                                    </controls:DataGridTemplatedColumn>

                                    <!--Cost Column-->
                                    <controls:DataGridTextColumn Width="110" Binding="{Binding cartTotal}" Foreground="White" CanSort="False" >
                                        <controls:DataGridTextColumn.Header>
                                            <Button x:Uid="RCartTotal" Height="40" Width="110"   Style="{StaticResource RoundButtonTemplate}"  Margin="-25,0,0,0"/>
                                        </controls:DataGridTextColumn.Header>
                                        <controls:DataGridTextColumn.Style>
                                            <Style TargetType="TextBlock">
                                                <Setter Property="TextAlignment" Value="Center"></Setter>
                                            </Style>
                                        </controls:DataGridTextColumn.Style>
                                    </controls:DataGridTextColumn>

                                <!--void image column-->
                                    <controls:DataGridTemplatedColumn>
                                        <controls:DataGridTemplatedColumn.Header>
                                            <Button Name="Cancelbtn" Height="50" Click="Cancelbtn_Click" Width="55" >
                                                <Image Source="/Images/erase.png"  Name="ImgClearCartp" Height="40" Width="40" ></Image>
                                            </Button>
                                        </controls:DataGridTemplatedColumn.Header>
                                        <controls:DataGridTemplatedColumn.CellTemplate>
                                            <DataTemplate>
                                                <StackPanel Name="voidImagePanel" Width="50" Height="30" Tapped="voidImagePanel_Tapped" >
                                                    <Image Name="VoidImage" Source='{Binding imageUrl}' Height="20" Width="30" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="0,5,0,0"></Image>
                                                </StackPanel>
                                            </DataTemplate>
                                        </controls:DataGridTemplatedColumn.CellTemplate>
                                    </controls:DataGridTemplatedColumn>
                                </controls:DataGrid.Columns>
                            </controls:DataGrid>

根据我的理解，我已经进行了测试，因为使用了DataGridTemplatedColumn获得了这个异常。但是根据我的范围，我必须使用DataGridTextColumn.而不是TemplateColumn

我用过https://github.com/MyToolkit/MyToolkit/wiki/DataGrid

链接。请建议我如何解决这个问题？

Answer 1

根据我的理解，我已经进行了测试，因为使用了DataGridTemplatedColumn获得了这个异常。但是根据我的范围，我必须使用TemplateColumn而不是DataGridTextColumn。

是的，对于这个问题，一个解决方法是将DataGridTemplatedColumn替换为DataGridTextColumn.But --您可以使用另外两个解决方案，我认为这比直接替换要好。

• 可以为order添加类似于Order="{Binding imageUrl}"的DataGridTemplatedColumn属性，如下所示： <控件:DataGridTemplatedColumn Order="{Binding }“>
• 如果不需要对列进行排序，可以简单地为DataGridTemplatedColumn元素添加DataGridTemplatedColumn，如下所示： <控件:DataGridTemplatedColumn CanSort="False"> . MyToolkit异常的原因是DataGridTemplatedColumn元素的order属性为null初始值，但要从中获取path参数，shows.You还可以向MyToolKit问题提交此问题，请MyToolKit团队修复。

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