I have a datagrid in a WPF project,

ive set the columns width to be have maximun limits,

and i want the data to be stretched in the rows them self but that doesnt happends...

they just stay as they are and the cell is cuted...

any ideas ?

Here is the code :

<DockPanel>
<DataGrid x:Name="nirGrid" x:Uid="nirGrid" AutoGenerateColumns="False"      AlternationCount="2" SelectionMode="Single" DockPanel.Dock="Top" Margin="10,50,10,50" FlowDirection="RightToLeft" ColumnWidth="SizeToCells" CanUserSortColumns="False" CanUserResizeColumns="False" CanUserReorderColumns="False" GridLinesVisibility="None" HeadersVisibility="None" SelectionUnit="Cell" VerticalAlignment="Stretch" EnableRowVirtualization="False" IsReadOnly="True" RowDetailsVisibilityMode="Visible" MinRowHeight="0" CanUserResizeRows="True" RowHeaderWidth="0">
        <DataGrid.Style>
            <Style>
                <Setter Property="ScrollViewer.CanContentScroll" Value="False" />
            </Style>
        </DataGrid.Style>
        <DataGrid.Columns >
            <DataGridTextColumn Binding="{Binding Path=task_desc}" IsReadOnly="True" Header="test1" Width="SizeToCells" MaxWidth="330" >
            </DataGridTextColumn>
            <DataGridTextColumn Binding="{Binding Path=task_req_date}" IsReadOnly="True" Header="test2" Width="SizeToCells" MaxWidth="70" >
            </DataGridTextColumn>
            <DataGridTemplateColumn Header="delete" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Button Content="delete" ToolTip="delete" Opacity="0.8" Click="Button_Click" MouseEnter="Button_MouseEnter" MouseLeave="Button_MouseLeave">
                            <Button.Template>
                                <ControlTemplate>
                                    <Border HorizontalAlignment="Center" VerticalAlignment="Center">
                                        <Image Source="/exhibits;component/Images/exit1.png" Width="15" Height="15" />
                                    </Border>
                                </ControlTemplate>
                            </Button.Template>
                        </Button>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
        </DataGrid.Columns>
    </DataGrid>

thanks in advance