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I created a DataGrid with binding to DataTable , here:

<DataGrid1:DataGrid x:Name="dg" CanUserDeleteRows="True" AutoGenerateColumns="False" ItemsSource="{Binding MyDataTable}">
<DataGrid1:DataGrid.Columns>
  <DataGrid1:DataGridTemplateColumn SortMemberPath="[First Column name]" Header="First Column name">
      <DataGrid1:DataGridTemplateColumn.CellTemplate>
         <DataTemplate>
             <TextBox Text="{Binding [First Column name],Mode=TwoWay}" />
         </DataTemplate>
      </DataGrid1:DataGridTemplateColumn.CellTemplate>
   </DataGrid1:DataGridTemplateColumn>
</DataGrid1:DataGrid.Columns>
</DataGrid1:DataGrid>
and when I click on header to sort the table, I get this exception :
  
An unhandled exception of type 'System.ArgumentException' occurred in PresentationFramework.dll
  
Additional information: 'My_Table_Name' type does not have property named '[First Column name]', so cannot sort data collection.
                you post your answer:  'My_Table_Name' type does not have property named '[First Column name]', so cannot sort data collection
– blindmeis
                Dec 29, 2011 at 13:54
                OMG.  replace [First Column name] with First Column name....  -1 Vote for this one. Read error messages please.
– GameAlchemist
                Dec 29, 2011 at 13:54
                if you use a typed datatable it would work. i dont know wether SortMemberPath can work with indexer...
– blindmeis
                Dec 29, 2011 at 14:02
                i read this error messages more than one time.. but i dont know thet it's work without [] becouse the DataContext is DadaRow ,and also DataTable does not have property named 'First Column name'...  but its working good!
– Zeps
                Dec 29, 2011 at 14:10
SortMemberPath is meant to point to a string containing the property name, NOT to a binding. 
You can use [FirstColumnName] in your TextBox.Text because it is a binding, so is binding to DataRow[FirstColumnName]
SortMemberPath is a property name, so is trying to reference DataRow.[FirstColumnName], which doesn't exist.
                @Zeps You said in your question it was giving you an exception.... Using the square brackets in a binding should be fine, but using it in the SortMemberPath won't work because it's not a property name.
– Rachel
                Dec 29, 2011 at 15:22
        
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