DataGridComboBoxColumn cell not displaying selected item text?

Question

I was wondering how you get the DataGridComboBoxColumn to display the selected item text when it is not in editing mode? And also is it possible to make it so the combo box in edit mode displays the selected item text initially?

Here is my XAML:

<DataGridComboBoxColumn Header="Formatter" 
                        SelectedItemBinding="{Binding Path=Format}">
  <DataGridComboBoxColumn.ElementStyle>
    <Style TargetType="">
      <Setter Property="Text" Value="{Binding Path=FormatView.Name}" />
    </Style>
  </DataGridComboBoxColumn.ElementStyle>
  <DataGridComboBoxColumn.EditingElementStyle>
    <Style TargetType="ComboBox">
      <Setter Property="ItemsSource" Value="{Binding Path=DefinedFormatters}" />
      <Setter Property="IsDropDownOpen" Value="True" />
      <Setter Property="ItemTemplate">
        <Setter.Value>
          <DataTemplate>
            <TextBlock Text="{Binding Path=Name}"></TextBlock>
          </DataTemplate>
        </Setter.Value>
      </Setter>
    </Style>
  </DataGridComboBoxColumn.EditingElementStyle>
</DataGridComboBoxColumn>

look at this answer this most to help u [http://stackoverflow.com/a/27408768/4048306][1] [1]: http://stackoverflow.com/a/27408768/4048306 — NourAldienArabian, Dec 10 '14 at 19:14

score 5 · Accepted Answer · answered Feb 01 '12 at 23:32

5

This was the only resource on DataGridComboBoxColumn that I found helpful:

http://msdn.microsoft.com/en-us/library/system.windows.controls.datagridcomboboxcolumn.aspx

Everything else (that I found on non-MSDN sites) was misleading!

answered Feb 01 '12 at 23:32

Gerry

1,031
1
14
30

score 4 · Answer 2 · answered Jul 04 '11 at 05:04

Ok I figured it out after a lot of googling.

but it seems you just do the same thing for ElementStyle, again with the target type of combo box, even though it does not seem to show a ComboBox when not editing.

<DataGridComboBoxColumn Header="Formatter" SelectedItemBinding="{Binding Path=Format}">
        <DataGridComboBoxColumn.ElementStyle>
            <Style TargetType="ComboBox">
                <Setter Property="ItemsSource" Value="{Binding Path=DefinedFormatters}" />
                <Setter Property="IsDropDownOpen" Value="True" />
                <Setter Property="ItemTemplate">
                    <Setter.Value>
                        <DataTemplate>
                            <TextBlock Text="{Binding Path=Name}"></TextBlock>
                        </DataTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </DataGridComboBoxColumn.ElementStyle>
        <DataGridComboBoxColumn.EditingElementStyle>
            <Style TargetType="ComboBox">
                <Setter Property="ItemsSource" Value="{Binding Path=DefinedFormatters}" />
                <Setter Property="IsDropDownOpen" Value="True" />
                <Setter Property="ItemTemplate">
                    <Setter.Value>
                        <DataTemplate>
                            <TextBlock Text="{Binding Path=Name}"></TextBlock>
                        </DataTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </DataGridComboBoxColumn.EditingElementStyle>
    </DataGridComboBoxColumn>

Jörg Reichardt · Answer 3 · 2011-07-01T14:55:57.047

0

I'm quite at a loss, but maybe try the following: Remove the ElementStyle and instead set the DisplayMemberPath, e.g.:

<DataGridComboBoxColumn Header="Formatter" SelectedItemBinding="{Binding Path=Format}" DisplayMemberPath="Name">

Path might also be FormatView.Name, I don't have a clear picture of your data structure. And how did you set the ItemsSource of your DataGridComboBoxColumn?

edited Jul 01 '11 at 14:55

answered Jun 29 '11 at 08:21

Jörg Reichardt

361
5
14

code example added, unfortunatly I can't verify syntactical correctness right now – Jörg Reichardt Jun 29 '11 at 13:15
That didn't help, let me also clarify that, the combo box is working and it is sucessfully binding the values to the data context, only problem is it is not displaying the text for its currently selected value, just a blank cell. Thanks, – Alex Hope O'Connor Jun 30 '11 at 01:59
So if you select a new value and then stop editing, the correct value is displayed? – Jörg Reichardt Jun 30 '11 at 07:14
The Visual Studio Output shows no Binding Expression Errors? And I noticed that the TargetType of the DataGridComboBoxColumn.ElementStyle is an empty string, which doesn't even compile in my studio. What does it say in your code? – Jörg Reichardt Jul 01 '11 at 13:53
I have another idea, although I'm growing more desperate ;) – Jörg Reichardt Jul 01 '11 at 14:49
Sorry for the slow reply, but I figured it out, just had to do a lot of googling, see my answer. – Alex Hope O'Connor Jul 04 '11 at 05:05

DataGridComboBoxColumn cell not displaying selected item text?

3 Answers3

Linked