合并DataGrid ColumnHeaders

Question

我想合并两个列标题。在您将此问题标记为重复之前，请进一步阅读。我不想要超级标题。我只想合并两个列标题。看看下面的图片：

您能看到两个标题为移动电话号码 和移动号码2 的列吗？我想只显示1个列标题为移动电话号码。

以下是用于创建上述dataGrid的XAML：

<DataGrid Grid.Row="1" Margin="0,10,0,0" ItemsSource="{Binding Ledgers}" IsReadOnly="True" AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Customer Name" Binding="{Binding LedgerName}" />
        <DataGridTextColumn Header="City" Binding="{Binding City}" />
        <DataGridTextColumn Header="Mobile Number 1" Binding="{Binding MobileNo1}" />
        <DataGridTextColumn Header="Mobile Number 2" Binding="{Binding MobileNo2}" />
        <DataGridTextColumn Header="Opening Balance" Binding="{Binding OpeningBalance}" />
    </DataGrid.Columns>
</DataGrid>

UPDATE1：

UPDATE2

我创建了一个转换器，如下所示：

public class MobileNumberFormatConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value != null && value != DependencyProperty.UnsetValue)
        {
            if (value.ToString().Length <= 15)
            {
                int spacesToAdd = 15 - value.ToString().Length;
                string s = value.ToString().PadRight(value.ToString().Length + spacesToAdd);
                return s;
            }

            return value.ToString().Substring(0, value.ToString().Length - 3) + "...";
        }

        return "";
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

我在XAML中使用它如下：

<DataGridTextColumn Header="Mobile Numbers">
    <DataGridTextColumn.Binding>
        <MultiBinding StringFormat=" {0} {1}">
            <Binding Path="MobileNo1" Converter="{StaticResource mobileNumberFormatConverter}"/>
            <Binding Path="MobileNo2" Converter="{StaticResource mobileNumberFormatConverter}"/>
        </MultiBinding>
    </DataGridTextColumn.Binding>
</DataGridTextColumn>

我得到的输出：

UPDATE3：

最后我得到了所需的输出。

以下是Converter的代码：

public class MobileNumberFormatConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value != null && value != DependencyProperty.UnsetValue)
        {
            if (parameter.ToString().ToUpper() == "N")
            {
                if (value.ToString().Length <= 15)
                {
                    return value.ToString();
                }
                else
                {
                    return value.ToString().Substring(0, 12);
                }
            }
            else if (parameter.ToString().ToUpper() == "S")
            {
                if (value.ToString().Length <= 15)
                {
                    int spacesToAdd = 15 - value.ToString().Length;
                    string spaces = "";
                    return spaces.PadRight(spacesToAdd);
                }
                else
                {
                    return "...";
                }
            }
        }

        return "";
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

这是我的XAML：

<DataGridTemplateColumn Header="Mobile Numbers">
    <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <TextBlock>
                <Run Text="{Binding MobileNo1, Converter={StaticResource mobileNumberFormatConverter}, ConverterParameter=N}" />
                <Run Text="{Binding MobileNo1, Converter={StaticResource mobileNumberFormatConverter}, ConverterParameter=S}" FontFamily="Consolas"/>
                <Run Text="   " FontFamily="Consolas"/>
                <Run Text="{Binding MobileNo2, Converter={StaticResource mobileNumberFormatConverter}, ConverterParameter=N}" />
                <Run Text="{Binding MobileNo2, Converter={StaticResource mobileNumberFormatConverter}, ConverterParameter=S}" FontFamily="Consolas"/>
            </TextBlock>
        </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

输出：

Answer 1

试试这个

  <DataGridTextColumn Header="Mobile Numbers">
                <DataGridTextColumn.Binding>
                    <MultiBinding StringFormat=" {0} {1}" Converter="{StaticResource YourConverter}">
                        <Binding Path="MobileNo1"/>
                        <Binding Path="MobileNo2"/>
                    </MultiBinding>
                </DataGridTextColumn.Binding>
  </DataGridTextColumn>