How to create Unbound columns | Infragistics Forums

How to create Unbound columns

Bill posted over 15 years ago

Hi,

Is there a way to create unbound columns in the grid? I want to create a button column. I followed the example in the docs and successfully got it to work using the DataTemplate. But I noticed in the output window an error that says:

System.Windows.Data Error: BindingExpression path error: 'MyButton' property not found on 'Silverlight.UI.MyService.MyRecord' 'Silverlight.UI.MyService.MyRecord' (HashCode=64553311). BindingExpression: Path='MyButton' DataItem='Silverlight.UI.MyService.MyRecord' (HashCode=64553311); target element is 'Infragistics.Silverlight.Controls.Cell+c' (Name=''); target property is 'FilterActionValue' (type 'System.Object')..

Is this normal? All the properties in my object are bound in the grid and duplicate keys are not allowed.

Thanks!

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Offline Stephen Zaharuk posted over 15 years ago

Hi,

I looked into this, and found a bug in the control.

I've addressed the issue, which will be in the first Service Release.

Thanks for the report.

-SteveZ
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Karl posted over 14 years ago in reply to Stephen Zaharuk

We are using 10.2 and receiving a very similar error (primary difference is the original post referenced FilterActionValue and ours is on Value).. Can you verify that this was fixed and released?

System.Windows.Data Error: BindingExpression path error: 'DeleteRowButton' property not found on 'Common.Components.UploadFile' 'Common.Components.UploadFile' (HashCode=8508925). BindingExpression: Path='DeleteRowButton' DataItem='Common.Components.UploadFile' (HashCode=8508925); target element is 'Infragistics.Controls.Grids.Cell+CellValueObject' (Name=''); target property is 'Value' (type 'System.Object')..

Here is our column definition:

                        <ig:UnboundColumn Key="DeleteRowButton" HeaderText=" " HorizontalContentAlignment="Center" HeaderTextHorizontalAlignment="Center" Width="37">
                            <ig:UnboundColumn.CellStyle>
                                <Style TargetType="ig:CellControl">
                                    <Setter Property="Padding" Value="0"/>
                                </Style>
                            </ig:UnboundColumn.CellStyle>
                            <ig:UnboundColumn.ItemTemplate>
                                <DataTemplate>
                                    <Button Click="RemoveSelectedFile_Click">
                                        <Image Source="/images/delete.png" HorizontalAlignment="Center" VerticalAlignment="Center" Stretch="None" />
                                    </Button>
                                </DataTemplate>
                            </ig:UnboundColumn.ItemTemplate>
                        </ig:UnboundColumn>

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Offline Stephen Zaharuk posted over 14 years ago in reply to Karl

Hi,

Yes, i was able to reproduce this issue. And have written up a bug for it.

For now, if this is causing blocking issues for you, you can simply attach a Dummy ValueConverter to the column:

  <ig:UnboundColumn Key="DeleteRowButton" HeaderText=" " ValueConverter="{StaticResource mvc}"  HorizontalContentAlignment="Center" HeaderTextHorizontalAlignment="Center" Width="37">
                    <ig:UnboundColumn.CellStyle>
                        <Style TargetType="ig:CellControl">
                            <Setter Property="Padding" Value="0"/>
                        </Style>
                    </ig:UnboundColumn.CellStyle>
                    <ig:UnboundColumn.ItemTemplate>
                        <DataTemplate>
                            <Button Click="Button_Click_1">
                                <Image Source="/images/delete.png" HorizontalAlignment="Center" VerticalAlignment="Center" Stretch="None" />
                            </Button>
                        </DataTemplate>
                    </ig:UnboundColumn.ItemTemplate>
                </ig:UnboundColumn>

 public class MVC : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }
    }

-SteveZ

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