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  • WPF DataGrid using a DataGridTemplateColumn rather than a DataGridComboBoxColumn to show selected value at load

    - by T
    My problem was that using a DataGridComboBoxColumn I couldn’t get it to show the selected value when the DataGrid loaded.  Instead, the user would have to click in the cells and like magic, the current selected values would appear and it looked the way I wanted it to on load. Here is what I had <DataGridComboBoxColumn MinWidth="150" x:Name="crewColumn" Header="Crew" ItemsSource="{Binding JobEdit.Crews, Source={StaticResource Locator}}" DisplayMemberPath="Name" SelectedItemBinding="{Binding JobEdit.SelectedCrew, Mode=TwoWay, Source={StaticResource Locator}}" />   Here is what I changed it too.  This works great.  It displays the selected item when the DataGrid loads and shows the combo box when the user goes into edit mode.   <DataGridTemplateColumn Header="Crew" MinWidth="150"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Crew.Name}"></TextBlock> </DataTemplate> </DataGridTemplateColumn.CellTemplate> <DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <ComboBox ItemsSource="{Binding JobEdit.Crews, Source={StaticResource Locator}}" DisplayMemberPath="Name" SelectedItem="{Binding JobEdit.SelectedCrew, Mode=TwoWay, Source={StaticResource Locator}}"></ComboBox> </DataTemplate> </DataGridTemplateColumn.CellEditingTemplate> </DataGridTemplateColumn>

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  • DataGridComboBoxColumn was not found

    - by Budda
    The System.Windows.Controls.Data.DataGrid is used in my Silverlight application, but on attempt to add 'DataGridComboBoxColumn' column to the grid the following error messages are obtained: Error 1 The tag 'DataGridComboBoxColumn' does not exist in XML namespace 'clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data'. C:\Project\Budda\VFMElita\VfmElitaView\Pages\SquadView.xaml 140 22 VfmElitaView Error 2 The type 'data:DataGridComboBoxColumn' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. C:\Project\Budda\VFMElita\VfmElitaView\Pages\SquadView.xaml 142 22 VfmElitaView Here is my "header" of the xaml-file: Here is grid: <StackPanel Grid.Row="1" Grid.Column="0" Grid.RowSpan="2"> <TextBlock Text="????"/> <data:DataGrid AutoGenerateColumns="False" ItemsSource="{Binding FieldPlayers}"> <data:DataGrid.Columns> <!--<data:DataGridTemplateColumn Header="#"> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Margin="4" Loaded="TextBlock_Loaded"/> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> </data:DataGridTemplateColumn>--> <data:DataGridTextColumn Header="?" Binding="{Binding Number}"/> <data:DataGridComboBoxColumn> - that doesn't work </data:DataGridComboBoxColumn> </data:DataGrid.Columns> </data:DataGrid> </StackPanel> What is required to get 'DataGridComboBoxColumn' workable? Any help is welcome. Thanks.

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  • How to bind collection to WPF:DataGridComboBoxColumn

    - by everwicked
    Admittedly I am new to WPF but I have looked and looked and can't find a solution to this problem. I have a simple object like: class Item { .... public String Measure { get; set; } public String[] Measures {get; } } Which I am trying to bind to a DataGrid with two text columns and a combo box column. For the combo box column, propery Measure is the current selection and Measures the possible values. My XAML is: <DataGridComboBoxColumn Header="Measure" Width="Auto" SelectedItemBinding="{Binding Path=Measure}" ItemsSource="{Binding Path=Measures}"/> </DataGrid.Columns> </DataGrid> The text column are displayed just fine but the combobox is not - the values are not displayed at all. The binding error is : ¨System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=Measures; DataItem=null; target element is 'DataGridComboBoxColumn' (HashCode=11497055); target property is 'ItemsSource' (type 'IEnumerable') How do I fix this??? Thanks

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  • Binding DataGridComboBoxColumn to a one to many entity framework relation

    - by Cristian
    I have two tables in the model, one table contains entries related to the other table in a one to many relations, for example: Table User ID Name Table Comments ID UserID Title Text I want to show a datagrid in a WPF window with two columns, one text column with the User name and another column with a combobox showing all the comments made by the user. The datagrid definition is like this: <DataGrid AutoGenerateColumns="False" [layout options...] Name="dataGrid1" ItemsSource="{Binding}"> <DataGrid.Columns> <DataGridTextColumn Header="Name" Binding="{Binding Path=Name}"/> <DataGridComboBoxColumn Header="Comments" SelectedValueBinding="{Binding Path=UserID}" SelectedValuePath="ID" DisplayMemberPath="Title" ItemsSource="{Binding Path=Comments}" /> </DataGrid.Columns> </DataGrid> in the code I assign the DataContext like this: dataGrid1.DataContext = entities.Users; The entity User has a property named Comments that leads to all the comments made by the user. The queries are returning data and the user names are shown but the combobox is not being filled. May be the approach is totally wrong or I'm just missing a very simple point here, I'm opened to learn better methods to do this. Thanks

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  • Changing the value of datagridComboBoxColumn on checking/unchecking of check boxes in datagridcheckb

    - by MD
    I have a wpf data grid,where there are two data template columns One of which ahs check box as the data template adn teh other has combo box as the data template. Now my requirement is,i need to disable few of the options in the combo boxes depending on the check box checked or unchecked for each individual rows... With the cod etaht i ahve tried,i am able to change teh values of teh combo boxes,but it changes for the whole column and not fro individual rows.. Please let me kneo how to determine the combo boxes for the corresponding check boxes in a particular row.

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  • WPF DataGrid ComboBox Column: Propagating Header Combobox throughout column...

    - by LostKaleb
    Hey there! Here's my question: I've got a Datagrid in WPF and I have a first column that is a DataGridComboBoxColumn. What I'd like to do is to have a header for that column also with a combobox: altering the header with propagate throughout the column. I can get this done visually, but when I submit the data, the list that is bound with the Datagrid does not carry the new combobox values. <dg:DataGridComboBoxColumn SelectedItemBinding="{Binding BIBStatus}" ItemsSource="{Binding Source={StaticResource typeStatus}}" Width="0.20*"> <dg:DataGridComboBoxColumn.HeaderTemplate> <DataTemplate> <StackPanel> <TextBlock Text="Built-In Bridge"/> <ComboBox SelectedItem="{Binding BIBStatus}" SelectionChanged="ComboBox_SelectionChanged" ItemsSource="{Binding Source={StaticResource typeStatus}}"/> </StackPanel> </DataTemplate> </dg:DataGridComboBoxColumn.HeaderTemplate> </dg:DataGridComboBoxColumn> In the ComboBox_SelectionChanged I have the following code: DataGridColumn comboCol = this.gridResults.Columns[0]; for (int i = 0; i < this.gridResults.Items.Count; i++) { ComboBox myCmBox = (comboCol.GetCellContent(this.gridResults.Items[i]) as ComboBox); myCmBox.SelectedValue = ((ComboBox)sender).SelectedValue; } When I submit the data, I submit the list that is DataContext to the Datagrid; if I change the value of the first column addressing a row at a time, i.e. clicking the cell with the combobox in each row, the values are propagated to the list in DataContext, however if I change the value of the first column by the header it does not. Can anyone tell me what I'm missing? I'm guessing it's the way I affect each row, but I've tried SelectedValue, SelectedItem and SelectedIndex... all to no avail. Thanks in advance...

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  • wpf DataGrid.datagridtemplatecolumn combobox does not update itemssource

    - by David
    <Grid Loaded="Grid_Loaded"> <DataGrid Margin="10,10,10,162" x:Name="dataGrid1" ItemsSource="{Binding myItemsSource}"/> <DataGrid Margin="10,164,10,10" x:Name="dataGrid2" ItemsSource="{Binding myItemsSource}" AutoGenerateColumns="False"> <DataGrid.Columns> <DataGridTextColumn Header="A" Binding="{Binding A}"></DataGridTextColumn> <DataGridComboBoxColumn Header="B" TextBinding="{Binding B}" x:Name="columnB"></DataGridComboBoxColumn> <DataGridTemplateColumn Header="C" x:Name="columnC"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <ComboBox Text="{Binding C, Mode=TwoWay}" SelectedItem="{Binding C, Mode=TwoWay}"> <ComboBoxItem Content="AAA"/> <ComboBoxItem Content="BBB"/> <ComboBoxItem Content="CCC"/> <ComboBoxItem Content="XXX"/> <ComboBoxItem Content="YYY"/> <ComboBoxItem Content="ZZZ"/> </ComboBox> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> </DataGrid.Columns> </DataGrid> columnB (buidin DataGridComboBoxColumn) is working. columnB.ItemsSource = LstForCbx; public List LstForCbx = new List{"AAA", "BBB", "CCC", "XXX", "YYY", "ZZZ"}; columnC combobox in DataGridComboBoxColumn not working. What wrong with my code?

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  • ADO Entity Framework 4 to WPF Datagrid. DatagridComboBox nightmare.

    - by Jason
    The WPF datagrid -seems- like it's going to work, but the combobox implementation does not work straight from the designer. So I'm left wandering around in the XAML randomly changing things trying to get it to work. The problems are numerous. I want to display a foreign key relationship (with drop down) instead of a bunch of numbers for a selection. It seems like it shouldn't be this hard. I can get the right values to show up (their description instead of an ID), but the table freaks out thinking that all the values have been modified. If I select a drop down, it refuses to allow me to edit anything else. I want to chalk this up as a .NET bug, but since I'm new to WPF datagrids, it's probably just me. Here is the code. <DataGridComboBoxColumn Header="Make Up" ItemsSource="{Binding Source={StaticResource materialMakeUpTypesViewSource}}" DisplayMemberPath="Description" TextBinding="{Binding Path=MaterialMakeUpType.Description}" SelectedItemBinding="{Binding Path=MaterialMakeUpType.Description}" SelectedValueBinding="{Binding Path=MaterialMakeUpType.ID}" />

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