MultiBinding GridViewColumn.CellTemplate中的StackPanel中的TextBlock和文本不显示

问题描述：

我有一个带有Gridview的ListView和一些列我需要有两行数据。最上面的项目数量和底部的数量乘以数量。我可以得到最高金额显示很好，但最低金额不显示。我在后端部分有空位，以确保正确的数量正在被拉出，并且正在返回正确的数字，但是当我运行该程序时它不会显示。MultiBinding GridViewColumn.CellTemplate中的StackPanel中的TextBlock和文本不显示

<Window x:Class="Listviewissue.MainWindow" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Title="MainWindow" Height="350" Width="525" 
    xmlns:local="clr-namespace:Listviewissue"> 
<Window.Resources> 
    <local:AmountQuantityConverter x:Key="AmtQConverter"/> 

</Window.Resources> 
<Grid > 
    <ListView Name="lstBids" Margin="3" Grid.ColumnSpan="4" Grid.Row="1" MinHeight="200"> 
     <ListView.View> 
      <GridView> 
       <GridViewColumn Header ="Q"> 
        <GridViewColumn.CellTemplate> 
         <DataTemplate> 
          <TextBlock Margin="1" Text="{Binding Path=Quantity}"/> 
         </DataTemplate> 
        </GridViewColumn.CellTemplate> 
       </GridViewColumn> 
       <GridViewColumn Header ="Sub Name" Width="100"> 
        <GridViewColumn.CellTemplate> 
         <DataTemplate> 
          <TextBlock Margin="1" Text="{Binding Path=SubContractorName}"/> 
         </DataTemplate> 
        </GridViewColumn.CellTemplate> 
       </GridViewColumn> 
       <GridViewColumn Header ="Sub Amt"> 
        <GridViewColumn.CellTemplate> 
         <DataTemplate> 
          <StackPanel> 
           <TextBlock Margin="1" Text="{Binding Path=SubContractorAmount, StringFormat={}{0:C}}"/> 
           <TextBlock Margin="1"> 
            <TextBlock.Text> 
             <MultiBinding Converter="{StaticResource AmtQConverter}" StringFormat="{}{0:C}}"> 
              <Binding Path="Quantity" /> 
              <Binding Path="SubContractorAmount"/> 
             </MultiBinding> 
            </TextBlock.Text> 
           </TextBlock> 
          </StackPanel> 
         </DataTemplate> 
        </GridViewColumn.CellTemplate> 
       </GridViewColumn> 
      </GridView> 
     </ListView.View> 
    </ListView> 
</Grid>

这里有回CS文件

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Data; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Imaging; 
using System.Windows.Navigation; 
using System.Windows.Shapes; 
using System.IO; 

namespace Listviewissue 
{ 
/// <summary> 
/// Interaction logic for MainWindow.xaml 
/// </summary> 
public partial class MainWindow : Window 
{ 
    public MainWindow() 
    { 
     InitializeComponent(); 
     LoadBox(); 
    } 

    private void LoadBox() 
    { 
     BidSheet bs = new BidSheet(); 
     bs.ReadFromDatabase("Test"); 
     lstBids.ItemsSource = bs.BidSheetLineItems; 
    } 
} 

public class AmountQuantityConverter : IMultiValueConverter 
{ 
    public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
    { 
     // Return the total value of all the items in stock. 
     decimal quantity = decimal.Parse(values[0].ToString()); 
     decimal amt = decimal.Parse(values[1].ToString()); 
     decimal result = (quantity * amt); 
     return result; 
    } 

    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture) 
    { 
     throw new NotSupportedException(); 
    } 
} 



public class BidSheet 
{ 
    public BidSheet() 
    { 
     BidSheetLineItems = new BidSheetLineItems(); 
    } 
    public BidSheetLineItems BidSheetLineItems { get; set; } 

    public void ReadFromDatabase(string file) 
    { 
     BidSheet bidSheet = new BidSheet(); 
     System.Xml.Serialization.XmlSerializer reader = 
     new System.Xml.Serialization.XmlSerializer(typeof(BidSheet)); 
     System.IO.StreamReader xmlFile = new System.IO.StreamReader(
      file + ".xml", true); 
     bidSheet = (BidSheet)reader.Deserialize(xmlFile); 

     BidSheetLineItems = bidSheet.BidSheetLineItems; 

     xmlFile.Close(); 
    } 
    } 


public class BidSheetLineItems : List<BidSheetLineItem> 
{ 


} 

public class BidSheetLineItem 
{ 
    public BidSheetLineItem() 
    { 
     Quantity = 0; 
     SubContractorName = ""; 
     SubContractorAmount = 0; 
    } 
    public double Quantity { get; set; } 
    public string SubContractorName { get; set; } 
    public decimal SubContractorAmount { get; set; } 
} 

}

，这里是有一些数据的XML文件中事先

<?xml version="1.0" encoding="utf-8"?> 
<BidSheet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
<BidSheetLineItems> 
    <BidSheetLineItem> 
     <Quantity>1</Quantity> 
     <SubContractorName>Harry</SubContractorName> 
    <SubContractorAmount>50</SubContractorAmount> 
</BidSheetLineItem> 
<BidSheetLineItem> 
    <Quantity>5</Quantity> 
    <SubContractorName>Arther</SubContractorName> 
    <SubContractorAmount>248120</SubContractorAmount> 
</BidSheetLineItem> 
<BidSheetLineItem> 
    <Quantity>2</Quantity> 
    <SubContractorName>Bill</SubContractorName> 
    <SubContractorAmount>340000</SubContractorAmount> 
</BidSheetLineItem> 
<BidSheetLineItem> 
    <Quantity>3</Quantity> 
    <SubContractorName>Fred</SubContractorName> 
    <SubContractorAmount>248120</SubContractorAmount> 
</BidSheetLineItem> 
<BidSheetLineItem> 
    <Quantity>5</Quantity> 
    <SubContractorName>Ron</SubContractorName> 
    <SubContractorAmount>248120</SubContractorAmount> 
</BidSheetLineItem> 
<BidSheetLineItem> 
    <Quantity>1</Quantity> 
    <SubContractorName>Goerge</SubContractorName> 
    <SubContractorAmount>60</SubContractorAmount> 
</BidSheetLineItem> 
    </BidSheetLineItems> 
</BidSheet>

感谢，让我知道你是否需要任何更多的信息来帮助我。

这不是一个很好的代码示例。请提供一个可靠地重现问题的良好[mcve]，并准确描述代码的作用以及您希望它执行的操作。将代码降低到最低限度再现问题所需的最低限度（例如，没有更多的列和属性可以显示问题的最小值），并提供可完成编译和运行的_complete_代码示例，无需读者额外付费。 –

我同意彼得。请提供一个很好的代码示例，以便其他人可以轻松理解您的问题。请不要在此发布可能会让其他人感到困惑的整个代码。 – ViVi

好吧，@PeterDuniho，我把问题的主题（sub Amt），数量（Q）和标识符（子名称）缩减为只有一列。问题是，子量只显示最高金额，底部只是空白。它应该是数量乘以数量。 – SSJTDK

答

好的，我想通了。我有

<MultiBinding Converter="{StaticResource AmtQConverter}" StringFormat="{}{0:C}}">

，它需要的是

<MultiBinding Converter="{StaticResource AmtQConverter}" StringFormat="{}{0:C}">

MultiBinding GridViewColumn.CellTemplate中的StackPanel中的TextBlock和文本不显示

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