<DataGrid Grid.Row="1" ItemsSource="{Binding TempList}" AutoGenerateColumns="False">
			<DataGrid.Columns>
				<DataGridTemplateColumn>
					<DataGridTemplateColumn.CellTemplate>
						<DataTemplate>
							<TextBox AcceptsReturn="True" Text="{Binding Text, Mode=TwoWay}"></TextBox>
						</DataTemplate>
					</DataGridTemplateColumn.CellTemplate>
				</DataGridTemplateColumn>
			</DataGrid.Columns>
		</DataGrid>

<DataGridTextColumn Binding="{Binding Text, Mode=TwoWay}">
	<DataGridTextColumn.EditingElementStyle>
		<Style TargetType="TextBox">
			<Setter Property="AcceptsReturn" Value="True"></Setter>
		</Style>
	</DataGridTextColumn.EditingElementStyle>
</DataGridTextColumn>