Question

我有一个DataTable，其中一个列名称中有结尾空格。

让我们说，我们在数据库中有表：

CREATE TABLE [dbo].[Text_with_pk](
    [char_ 10    ] [char](10) NOT NULL,
    [nchar_10] [nchar](10) NOT NULL,
    [varchar_max] [varchar](max) NOT NULL,
    [id] [int] IDENTITY(1,1) NOT NULL,
 CONSTRAINT [PK_Text_with_pk] PRIMARY KEY CLUSTERED 
(
    [id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

列[char_ 10 ]在其名称中包含结尾空格。

我将此表的内容读入DataTable并将其绑定到DataGrid。

<DataGrid Grid.Row="2" 
                      x:Name="PreviewDataGrid"
                      AutoGenerateColumns="True"
                      SelectedValuePath="SelectedCells"
                      SelectedCellsChanged="PreviewDataGrid_OnSelectedCellsChanged"
                      ItemsSource="{Binding Data}"
                      AutoGeneratingColumn="PreviewDataGrid_OnAutoGeneratingColumn">
        </DataGrid>

我尝试添加列绑定以转义列名中的特殊符号/空格。

private void PreviewDataGrid_OnAutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
    {
        var column = (e.Column as DataGridTextColumn);

        if (column != null)
        {
            column.Binding = new Binding($"[{e.PropertyName}]");
            column.Header = e.PropertyName;
            column.Binding.TargetNullValue = "NULL";
        }
    }

但它不起作用，我不断收到此错误：

System.Windows.Data Error: 17 : Cannot get 'Item[]' value (type 'Object') from '' (type 'DataRowView'). BindingExpression:Path=[QOF754    ]; DataItem='DataRowView' (HashCode=19681030); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String') TargetInvocationException:'System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentException: QOF754 is neither a DataColumn nor a DataRelation for table [dbo].[Test].
   at System.Data.DataRowView.get_Item(String property)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at MS.Internal.Data.PropertyPathWorker.GetValue(Object item, Int32 level)
   at MS.Internal.Data.PropertyPathWorker.RawValue(Int32 k)'

我事先不知道表格结构，列名。所以我需要处理所有场景。

此处[QOF754 ]是实际的列名。

我试图在Converter中撤消它：

 ItemsSource="{Binding Data, Converter={StaticResource DataGridConverter}}"


 public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
                return null;

            var dataTable = value as DataTable;
            if (dataTable != null)
            {
                foreach (DataColumn column in dataTable.Columns)
                {

                    column.ColumnName = column.ColumnName.Trim();
                }
            }

            return value;
        }

但是列名不同（修剪），这对我不起作用。

如何将这些带尾随空格的列绑定到我的DataGrid并使其正常工作？

将DataTable绑定到DataGrid后清空行

0 个答案: