Question

我正在尝试为列标题创建带有标签和组合框的自定义列。第一次正确加载网格。单击该按钮，我更改了Datagrid的itmesources。我看到datagrid的单元格已更新，但不会更新标题。我还看到没有调用Datagrid_Loaded。在调试时我发现对于“绑定”对象，我提供绑定路径，但对于标题，我提供源，因此标题不会更新。如何为标题提供路径，使其类似于绑定？

private void DataGrid_Loaded(object sender, RoutedEventArgs e)
{
    DataGrid grid = sender as DataGrid;
    if (grid.Items.Count == 0)
    {
        return;
    }
   StageVM data = grid.Items[0] as StageVM;
    if (data == null)
    {
        return;
    }
    int index = 0;
    foreach (StageItemVM param in data.Stage)
    {
        var binding = new Binding(string.Format("Stage[{0}].StageItem.Value", index));
        grid.Columns.Add(new CustomBoundColumn()
        {
            CanUserSort = false,
            HeaderTemplateSelector = this.FindResource("ColumnHeaderTemplateSelector") as  DataTemplateSelector,
            HeaderStyle = this.FindResource("StageHeaderStyle") as Style,
            Header = (new Binding().Source = param.StageItem.Key),
            Binding = binding,
            TemplateSelectorName = "StageRangeColumnTemplateSelector"
        });
        index++;
    }
}

customBoundColumn类如下：

 public class CustomBoundColumn : DataGridBoundColumn
{
     public string TemplateSelectorName { get; set; }
     protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem)
    {
         var binding = new Binding(((Binding)Binding).Path.Path);
         binding.Source = dataItem;
         var content = new ContentControl();
         content.ContentTemplateSelector =(DataTemplateSelector)cell.FindResource(TemplateSelectorName);
        content.SetBinding(ContentControl.ContentProperty, binding);
       return content;
    }
    protected override FrameworkElement GenerateEditingElement(DataGridCell cell, object dataItem)
   {
       return GenerateElement(cell, dataItem);
    }
}

Answer 1

检查这是否可以帮助您： WPF DataGridTextColumn header binding

我遇到了与我的ViewModel绑定datagrid标头相同的问题。这是一个基于xaml的解决方案。

用于自定义列的WPF Datagrid标头绑定无法正常工作

1 个答案: