wpfdatagrid

问题 Definition : Having 2D-array of string (about 10 columns, 1,600 rows, fixed length of 7-char) serving as a data source for WPF .NET 4.0 Grid control, the following code snippet has been used in order to populate the Grid with labels displaying values from array. Note : Grid was added to XAML and passed to the function PopulateGrid (see Listing 1.). The visual output is essentially a tabular data representation in read-only mode (no need for two-way binding). Problem : Performance is a key

问题 How could I make the Datagrid display the headers in case there's no row to display? My Datagrid is "completely" read-only with: "AutoGenerateColumns ="True" "CanUserAddRows="False" "CanUserDeleteRows="False" "CanUserResizeRows="False" "IsReadOnly"="True" If there's no row, then the headers aren't displayed, if I add even an empty row, then the headers are shown! Until now, I couldn't find any workaround/solution for that! Thx all Fred 回答1: AFAIK If there are no rows then there are no columns

问题 What I tried to do is create a Style to apply a WordWrap on all DataGridTextColumns in a Datagrid without explicitly setting it like this. <DataGrid ItemsSource="{Binding Lines}"> <DataGrid.Columns> <DataGridTextColumn Header="Column1" Binding="{Binding Path=Result1}"> <DataGridTextColumn.ElementStyle> <Style TargetType="{x:Type TextBlock}"> <Setter Property="TextWrapping" Value="Wrap"/> </Style> </DataGridTextColumn.ElementStyle> </DataGridTextColumn> </DataGrid.Columns> </DataGrid>

问题 I have a typed dataset that is being bound to a datagrid (MVVM). I also have a list of Points (X and Y in the typed dataset) that say which cells have errors. The logic to detect this is complex and is run on the server end. My goal is to paint each cell's background a different colour if they have an error, (i.e. the list of points contains that Cell's X and Y). The dataGrid is defined as: <DataGrid x:Name="gridData" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" VerticalAlignment="Stretch

问题 I recently had this problem about scrolling and focus changing. I solved it by adding in my DataGrid the following: <DataGrid.Template> <ControlTemplate> <ItemsPresenter /> </ControlTemplate> </DataGrid.Template> The scrolling now works fine, but a new problem appeared: the DataGrid 's headers do not show anymore. It is actually logic, since now my DataGrid will only show an ItemsPresenter without taking care of the headers. I am therefore trying to define an appropriate template, showing

问题 I have the following on a datagrid in my C# code: <DataGrid.InputBindings> <MouseBinding Gesture="LeftDoubleClick" Command="{Binding CmdTransUnitFillerRowDblClick}" /> </DataGrid.InputBindings> It works for the most part except if user first selects the row (single click) and then tries double-clicking the row. In this situation the CmdTransUnitFillerRowDblClick code is never fired for processing. So, how can I get the CmdTransUnitFillerRowDblClick to fire correctly on a double-click when the

问题 I have a WPF DataGrid that has another datagrid declared within the RowDetailsTemplate; <DataGrid name="dataGrid1" RowDetailsVisibilityMode="VisibleWhenSelected"> ... <DataGrid.RowDetailsTemplate> <DataTemplate> <DataGrid name="dataGrid2"> ... </DataGrid/> </DataTemplate> </DataGrid.RowDetailsTemplate> </DataGrid> When I CTRL-Click a row on the child DataGrid, it un-selects the parent datagrid's SelectedItem and hides the RowDetailsTemplate . I assume this is some kind of Routed Event

问题 I am using RowDetailsTemplate to display a nested datagrid for a row. Now the datagrid expands in height when I select a row to show this nested datagrid. But it doesn't reduce its height when the row is deselected. Is there a way to resize the datagrid to its original height after the row details have been collapsed? Is it possible to do it declaratively? 回答1: Place detail into StackPanel and grid with this this Behaviour: public class DataGridDetailResizeBehavior : Behavior<FrameworkElement

问题 I was able to set up a WPF Datagrid, display a Northwind database table via linq-to-sql, and handle the TheDataGrid_RowEditEnding event so that it saves back the the database. However, when a CustomerID was changed, it gets an error from the database which I handle, but how do I now either (1) rollback the Datagrid control or (2) refetch the original data from the database view LINQ-to-SQL (the refetching that I do below via LINQ seems to have some kind of caching, it doesn't refresh): <Grid

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Code to check if a cell of a DataGrid is currently edited Is there a way to determine whether a WPF DataGrid is in edit mode / which row is currently edited? 回答1: VB.NET <Extension> Public Function GetContainerFromIndex(Of TContainer As DependencyObject) _ (ByVal itemsControl As ItemsControl, ByVal index As Integer) As TContainer Return DirectCast( itemsControl.ItemContainerGenerator.ContainerFromIndex(index),