DataTemplate与转换器代码后

Question

我想加载一个DataTemplate在代码隐藏，但它工作正常，如果我删除转换器...但只要我把它放在那里，它吹。现在，我确实将我的状态设置为我的名称空间，并将引用放置在XAML中的转换器中。例如：

<Window.Resources> 
    <local:StatCellConverter x:Key="myConverter" /> 
</Window.Resources> 

，这是我的方法，我产生一个DataTemplate：

private DataTemplate GenerateStatRowDataTemplate() 
{ 
    ParserContext pc = new ParserContext(); 
    pc.XmlnsDictionary.Add("", "http://schemas.microsoft.com/winfx/2006/xaml/presentation"); 
    pc.XmlnsDictionary.Add("x", "http://schemas.microsoft.com/winfx/2006/xaml"); 
    pc.XmlnsDictionary.Add("xcdg", "http://schemas.xceed.com/wpf/xaml/datagrid"); 

    string statRowTemplate = "<DataTemplate><xcdg:StatRow>"; 
    statRowTemplate += "<xcdg:StatCell FieldName=\"Column4\" ResultPropertyName=\"AvgColumn4\">"; 
    statRowTemplate += "<xcdg:StatCell.ContentTemplate>"; 
    statRowTemplate += "<DataTemplate>"; 
    statRowTemplate += "<TextBlock Text=\"{Binding ., Converter={StaticResource ResourceKey=myConverter}}\" />"; 
    statRowTemplate += "</DataTemplate>"; 
    statRowTemplate += "</xcdg:StatCell.ContentTemplate>"; 
    statRowTemplate += "</xcdg:StatCell>"; 
    statRowTemplate += "</xcdg:StatRow>"; 
    statRowTemplate += "</DataTemplate>"; 

    StringReader stringReader = new StringReader(statRowTemplate); 
    XmlReader xmlReader = XmlReader.Create(stringReader); 
    MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(statRowTemplate.ToString())); 
    DataTemplate dt = (DataTemplate)XamlReader.Load(ms,pc); 
    dt.LoadContent(); 
    return dt; 
} 

我到底做错了什么？难道我不得不在后面的代码中定义我的转换器吗？

我转换

public class StatCellConverter : IValueConverter 
    { 
     public object Convert(object value, Type targetType, object parameter, CultureInfo culture) 
     { 
      Debug.WriteLine(value); 

      if (value.Equals("#DIV/0#")) 
       return "0"; 
      return value; 
     } 
     public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) 
     { 
      throw new NotImplementedException(); 
     } 
    } 

我得到一个异常说，它无法加载的DataTemplate

Answer 1

这实际上是在框架中的错误。 通过XmlnsDictionary添加本地名称空间不起作用。 它必须与装配和命名空间模板定义定义中添加：

所示的，上述@Nerd在训练中评论这应该工作：

string statRowTemplate = "<DataTemplate >"; 

private DataTemplate GenerateStatRowDataTemplate() 
{ 
    ParserContext pc = new ParserContext(); 
    pc.XmlnsDictionary.Add("", "http://schemas.microsoft.com/winfx/2006/xaml/presentation"); 
    pc.XmlnsDictionary.Add("x", "http://schemas.microsoft.com/winfx/2006/xaml"); 
    pc.XmlnsDictionary.Add("xcdg", "http://schemas.xceed.com/wpf/xaml/datagrid"); 

    string statRowTemplate = "<DataTemplate xmlns:local=\"clr-namespace:MyTest;assembly=MyTest\" ><xcdg:StatRow>"; 
    statRowTemplate += "<xcdg:StatCell FieldName=\"Column4\" ResultPropertyName=\"AvgColumn4\">"; 
    statRowTemplate += "<xcdg:StatCell.ContentTemplate>"; 
    statRowTemplate += "<DataTemplate>"; 
    statRowTemplate += "<TextBlock Text=\"{Binding ., Converter={StaticResource ResourceKey=myConverter}}\" />"; 
    statRowTemplate += "</DataTemplate>"; 
    statRowTemplate += "</xcdg:StatCell.ContentTemplate>"; 
    statRowTemplate += "</xcdg:StatCell>"; 
    statRowTemplate += "</xcdg:StatRow>"; 
    statRowTemplate += "</DataTemplate>"; 

    StringReader stringReader = new StringReader(statRowTemplate); 
    XmlReader xmlReader = XmlReader.Create(stringReader); 
    MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(statRowTemplate.ToString())); 
    DataTemplate dt = (DataTemplate)XamlReader.Load(ms,pc); 
    dt.LoadContent(); 
    return dt; 
}