ria serive 获得数据后绑定DataGrid如何增加新栏

[enterzhuang]

用自动绑定栏可以显示数据

但加入代码无法显示数据：
curDataGrid.Columns.Clear();
if (string.IsNullOrEmpty(this.ColumnDisplayName1))
return;
DataGridTextColumn newCol = new DataGridTextColumn();
newCol.Width =new DataGridLength( this.ColumnSize1);
newCol.Binding = new System.Windows.Data.Binding(this.ColumnName1);
newCol.Binding.Mode = System.Windows.Data.BindingMode.TwoWay;
newCol.Header = this.ColumnDisplayName1;
curDataGrid.Columns.Add(newCol);