Hi Team, I am facing performance issue for DataGrid with expander on some machines and its working fine on some machines. I have used expander and group by in datagrid but for some machine working so is there any system dependencies.Actually performance issue with kyeboard type no any database connectivity and any c# events only keyboard and mouse click only in datagrid other page is working fine.Please help. DataGrid Grid.Row = "1" ColumnWidth = "*" HorizontalAlignment = "Left" AutoGenerateColumns = "False" RowHeaderWidth = "0" CanUserAddRows = "False" x:Name = "gdChannelElement" CanUserDeleteRows = "False" ItemsSource = "{Binding Path=LstChannelElementModel}" CanUserSortColumns = "True" HorizontalScrollBarVisibility = "Auto" VerticalScrollBarVisibility = "Auto" CurrentItem = "{Binding SelectedChannelElement}" SelectedItem = "{Binding SelectedChannelElement}" Grid.ColumnSpan = "2" IsReadOnly = "{Binding Path= ChannelModel.IsReadOnly, UpdateSourceTrigger=PropertyChanged}" > DataGrid.Columns > DataGridTemplateColumn Header = "Title *" MinWidth = "180" Width = "Auto" SortMemberPath = "Name" > DataGridTemplateColumn.HeaderTemplate > DataTemplate > TextBlock Text = "Name *" /> DataTemplate > DataGridTemplateColumn.HeaderTemplate > DataGridTemplateColumn.CellTemplate > DataTemplate > TextBlock Text = "{Binding Path=Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" Style = "{DynamicResource TblGridClass}" /> DataTemplate > DataGridTemplateColumn.CellTemplate > DataGridTemplateColumn.CellEditingTemplate > DataTemplate > TextBox Text = "{Binding Path=Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" MaxLength = "40" x:Name = "test" FocusManager.FocusedElement = "{Binding RelativeSource={RelativeSource Self}}" > TextBox > DataTemplate > DataGridTemplateColumn.CellEditingTemplate > DataGridTemplateColumn > DataGridTemplateColumn Header = "Element Sub Type" MinWidth = "170" Width = "Auto" SortMemberPath = "ElementSubType" > DataGridTemplateColumn.HeaderTemplate > DataTemplate > StackPanel Style = "{DynamicResource LOVStack}" > TextBlock Text = "Element Sub Type *" /> Image Source = "pack://application:,,,/Phoenix.CommonResources;component/Images/blueArrow.png" Style = "{DynamicResource LOVImage}" > Image > StackPanel > DataTemplate > DataGridTemplateColumn.HeaderTemplate > DataGridTemplateColumn.CellTemplate > DataTemplate > TextBlock Text = "{Binding Path=ElementSubType, ValidatesOnDataErrors=True}" Style = "{DynamicResource TblGridClass}" /> DataTemplate > DataGridTemplateColumn.CellTemplate > DataGridTemplateColumn.CellEditingTemplate > DataTemplate > TextBox Text = "{Binding Path=ElementSubType, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" x:Name = "test" FocusManager.FocusedElement = "{Binding RelativeSource={RelativeSource Self}}" > i:Interaction.Triggers > i:EventTrigger EventName = "PreviewKeyDown" > mvvmEvent:EventToCommand Command = "{Binding DataContext.ElementSubTypePreviewKeyDownCommand,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}" PassEventArgsToCommand = "True" > mvvmEvent:EventToCommand > i:EventTrigger > i:EventTrigger EventName = "LostFocus" > mvvmEvent:EventToCommand Command = "{Binding DataContext.ElementSubTypeLostFocusCommand,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}" PassEventArgsToCommand = "True" > mvvmEvent:EventToCommand > i:EventTrigger > i:Interaction.Triggers > TextBox > DataTemplate > DataGridTemplateColumn.CellEditingTemplate > DataGridTemplateColumn.CellStyle > Style TargetType = "{x:Type DataGridCell}" > Style.Triggers > DataTrigger…

Rendering should all be done by DirectX and GPU so if there is a difference in Hardware the CPU has to take over and then that is your bottleneck.WPF sucks bc of this issues when handling many items in any container.

WPF DataGrid with Expander perfomance issue on some machine.

Hi Team,

I am facing performance issue for DataGrid with expander on some machines and its working fine on some machines. I have used expander and group by in datagrid but for some machine working so is there any system dependencies.Actually performance issue with kyeboard type no any database connectivity and any c# events only keyboard and mouse click only in datagrid other page is working fine.Please help.

<DataGrid Grid.Row="1" ColumnWidth="*" HorizontalAlignment="Left" AutoGenerateColumns="False" RowHeaderWidth="0" CanUserAddRows="False" x:Name="gdChannelElement" CanUserDeleteRows="False"
ItemsSource="{Binding Path=LstChannelElementModel}" CanUserSortColumns="True"
HorizontalScrollBarVisibility="Auto"
VerticalScrollBarVisibility="Auto"
CurrentItem="{Binding SelectedChannelElement}"
SelectedItem="{Binding SelectedChannelElement}" Grid.ColumnSpan="2"
IsReadOnly="{Binding Path= ChannelModel.IsReadOnly, UpdateSourceTrigger=PropertyChanged}">
<DataGrid.Columns>
<DataGridTemplateColumn Header="Title *" MinWidth="180" Width="Auto" SortMemberPath="Name">
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<TextBlock Text="Name *" />
DataTemplate>
DataGridTemplateColumn.HeaderTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" Style="{DynamicResource TblGridClass}" />
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<TextBox Text="{Binding Path=Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" MaxLength="40" x:Name="test" FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" >
TextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
DataGridTemplateColumn>
<DataGridTemplateColumn Header="Element Sub Type" MinWidth="170" Width="Auto" SortMemberPath="ElementSubType">
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Style="{DynamicResource LOVStack}">
<TextBlock Text="Element Sub Type *" />
<Image Source="pack://application:,,,/Phoenix.CommonResources;component/Images/blueArrow.png" Style="{DynamicResource LOVImage}">Image>
StackPanel>
DataTemplate>
DataGridTemplateColumn.HeaderTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=ElementSubType, ValidatesOnDataErrors=True}" Style="{DynamicResource TblGridClass}" />
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<TextBox Text="{Binding Path=ElementSubType, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" x:Name="test" FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="PreviewKeyDown">
<mvvmEvent:EventToCommand
Command="{Binding DataContext.ElementSubTypePreviewKeyDownCommand,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
PassEventArgsToCommand="True">
mvvmEvent:EventToCommand>
i:EventTrigger>
<i:EventTrigger EventName="LostFocus">
<mvvmEvent:EventToCommand
Command="{Binding DataContext.ElementSubTypeLostFocusCommand,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
PassEventArgsToCommand="True" >
mvvmEvent:EventToCommand>
i:EventTrigger>
i:Interaction.Triggers>
TextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
<DataGridTemplateColumn.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Style.Triggers>
<DataTrigger Binding="{Binding HasElementSubType}" Value="true">
<Setter Property="IsHitTestVisible" Value="True"/>
<Setter Property="IsTabStop" Value="True"/>
DataTrigger>
<DataTrigger Binding="{Binding HasElementSubType}" Value="false">
<Setter Property="IsHitTestVisible" Value="False"/>
<Setter Property="IsTabStop" Value="False"/>
DataTrigger>
Style.Triggers>
Style>
DataGridTemplateColumn.CellStyle>
DataGridTemplateColumn>
<DataGridTemplateColumn MinWidth="70" Header="Position" SortMemberPath="Position" IsReadOnly="{Binding IsPositionReadOnly}">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Position,ValidatesOnDataErrors=True,ValidatesOnExceptions=True}" Style="{DynamicResource TblGridClass}">TextBlock>
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<ComboBox Name="cmbPosition" MaxWidth="70" ItemsSource="{Binding PositionDropDownList}" HorizontalAlignment="Stretch" Margin="0"
DisplayMemberPath="Value1" SelectedValuePath="ID" SelectedValue="{Binding PositionId,UpdateSourceTrigger=PropertyChanged}" Text="{Binding Position,UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True,ValidatesOnExceptions=True}" FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}">
ComboBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
<DataGridTemplateColumn.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsPositionReadOnly}" Value="true">
<Setter Property="IsEnabled" Value="False"/>
DataTrigger>
Style.Triggers>
Style>
DataGridTemplateColumn.CellStyle>
DataGridTemplateColumn>
<DataGridTemplateColumn Header="Break" MinWidth="70" SortMemberPath="Break" IsReadOnly="{Binding Path= ChannelElementModel.IsReadOnlyBreak, UpdateSourceTrigger=PropertyChanged}">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Break,ValidatesOnDataErrors=True,ValidatesOnExceptions=True, UpdateSourceTrigger=PropertyChanged}" Style="{DynamicResource TblGridClass}" />
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<TextBox Width="50" IsReadOnly="{Binding Path= ChannelElementModel.IsReadOnlyBreak, UpdateSourceTrigger=PropertyChanged}" Text="{Binding Break,ValidatesOnDataErrors=True,ValidatesOnExceptions=True,UpdateSourceTrigger=PropertyChanged}" FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" MaxLength="20">
<i:Interaction.Triggers>
<i:EventTrigger EventName="PreviewKeyDown">
<mvvmEvent:EventToCommand Command="{Binding DataContext.ChannelBreakPreviewKeyDownCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}}" PassEventArgsToCommand="True" />
i:EventTrigger>
i:Interaction.Triggers>
TextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
<DataGridTemplateColumn.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsReadOnlyBreak}" Value="true">
<Setter Property="IsEnabled" Value="False"/>
DataTrigger>
Style.Triggers>
Style>
DataGridTemplateColumn.CellStyle>
DataGridTemplateColumn>
<DataGridTemplateColumn Header="Media Id *" MinWidth="150" Width="Auto" SortMemberPath="MediaId">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=MediaId, ValidatesOnDataErrors=True}" Style="{DynamicResource TblGridClass}" />
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<TextBox FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" MaxLength="32"
Text="{Binding MediaId, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="LostFocus">
<mvvmEvent:EventToCommand
Command="{Binding DataContext.MediaIdLostFocus,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
PassEventArgsToCommand="True">mvvmEvent:EventToCommand>
i:EventTrigger>
i:Interaction.Triggers>
TextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
DataGridTemplateColumn>
<mvvmEvent:DataGridDateColumn Header="Applicable Days" Width="auto" MinWidth="100">
<mvvmEvent:DataGridDateColumn.CellTemplate >
<DataTemplate>
<TextBlock Style="{DynamicResource TblGridClass}">
<Hyperlink IsEnabled ="{Binding IsApplicableDaysEnable}" Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}, Path=DataContext.ChannelGridDaysSelectCommand}">
View
Hyperlink>
TextBlock>
DataTemplate>
mvvmEvent:DataGridDateColumn.CellTemplate>
mvvmEvent:DataGridDateColumn>
<DataGridTemplateColumn Header="Duration *" MinWidth="110" Width="Auto" SortMemberPath="Duration">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Duration, ValidatesOnDataErrors=True}" Style="{DynamicResource TblGridClass}"/>
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<wpftoolkit:MaskedTextBox FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" Style="{DynamicResource DurationGridTextBoxClass}" Mask="00:00:00:00" Grid.Row="2" Grid.Column="5" Text="{Binding Duration, Mode=TwoWay, UpdateSourceTrigger=LostFocus,ValidatesOnDataErrors=True}" >wpftoolkit:MaskedTextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
DataGridTemplateColumn>
<mvvmEvent:DataGridDateColumn Header="Start Date *" MinWidth="150" Width="Auto" SortMemberPath="StartDate">
<mvvmEvent:DataGridDateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=StartDate,StringFormat= 'dd-MMM-yyyy', ValidatesOnDataErrors=True }" Style="{DynamicResource TblGridClass}" />
DataTemplate>
mvvmEvent:DataGridDateColumn.CellTemplate>
<mvvmEvent:DataGridDateColumn.CellEditingTemplate>
<DataTemplate>
<DatePicker FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" x:Name="dtStartDate" SelectedDate="{Binding Path=StartDate, StringFormat='dd-MMM-yyyy', Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="LostFocus">
<mvvmEvent:EventToCommand
Command="{Binding DataContext.StartDateLostFocusCommand,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
PassEventArgsToCommand="True" >
mvvmEvent:EventToCommand>
i:EventTrigger>
i:Interaction.Triggers>
DatePicker>
DataTemplate>
mvvmEvent:DataGridDateColumn.CellEditingTemplate>
mvvmEvent:DataGridDateColumn>
<mvvmEvent:DataGridDateColumn Header="End Date *" MinWidth="150" Width="Auto" SortMemberPath="EndDate">
<mvvmEvent:DataGridDateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=EndDate,StringFormat= 'dd-MMM-yyyy', ValidatesOnDataErrors=True }" Style="{DynamicResource TblGridClass}" />
DataTemplate>
mvvmEvent:DataGridDateColumn.CellTemplate>
<mvvmEvent:DataGridDateColumn.CellEditingTemplate>
<DataTemplate>
<DatePicker FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" SelectedDate="{Binding Path=EndDate, StringFormat='dd-MMM-yyyy', Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,ValidatesOnDataErrors=True}" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="LostFocus">
<mvvmEvent:EventToCommand
Command="{Binding DataContext.EndDateLostFocusCommand,Mode=OneWay,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
PassEventArgsToCommand="True" >
mvvmEvent:EventToCommand>
i:EventTrigger>
i:Interaction.Triggers>
DatePicker>
DataTemplate>
mvvmEvent:DataGridDateColumn.CellEditingTemplate>
mvvmEvent:DataGridDateColumn>
<DataGridTemplateColumn Header="Start Time" MinWidth="80" Width="Auto" SortMemberPath="StartTime">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=StartTime,ValidatesOnDataErrors=True}" Style="{DynamicResource TblGridClass}" />
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<wpftoolkit:MaskedTextBox FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" Style="{DynamicResource TimeGridTextBoxClass}" Mask="00:00:00" Grid.Row="2" Grid.Column="5" Text="{Binding StartTime, Mode=TwoWay, UpdateSourceTrigger=LostFocus,ValidatesOnDataErrors=True}" >wpftoolkit:MaskedTextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
DataGridTemplateColumn>
<DataGridTemplateColumn Header="End Time" MinWidth="80" Width="Auto" SortMemberPath="EndTime">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=EndTime,ValidatesOnDataErrors=True}" Style="{DynamicResource TblGridClass}" />
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<wpftoolkit:MaskedTextBox FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" Style="{DynamicResource TimeGridTextBoxClass}" Mask="00:00:00" Grid.Row="2" Grid.Column="5" Text="{Binding EndTime, Mode=TwoWay, UpdateSourceTrigger=LostFocus,ValidatesOnDataErrors=True}" >wpftoolkit:MaskedTextBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
DataGridTemplateColumn>
<DataGridTemplateColumn Header="Active" MinWidth="50" Width="Auto" >
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox HorizontalAlignment="Center" IsChecked="{Binding Path=IsActive, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
>CheckBox>
DataTemplate>
DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate >
<DataTemplate>
<CheckBox HorizontalAlignment="Center" FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}"
IsChecked="{Binding Path=IsActive, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" >CheckBox>
DataTemplate>
DataGridTemplateColumn.CellEditingTemplate>
DataGridTemplateColumn>
<DataGridTextColumn Foreground="Black" MinWidth="80" Width="Auto" CellStyle="{StaticResource MyDataGridCell}" Header="Captured On" Binding="{Binding Path=CapturedOn,StringFormat='dd-MMM-yyyy'}" IsReadOnly="True" >
DataGridTextColumn>
<DataGridTextColumn MinWidth="250" Width="*" Foreground="Black" Header="Comments" Binding="{Binding Path=Comment, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
<DataGridTextColumn.EditingElementStyle>
<Style TargetType="TextBox">
<Setter Property="MaxLength" Value="120"/>
<Setter Property="CharacterCasing" Value="Upper"/>
Style>
DataGridTextColumn.EditingElementStyle>
DataGridTextColumn>
DataGrid.Columns>
<DataGrid.RowValidationErrorTemplate>
<ControlTemplate>
ControlTemplate>
DataGrid.RowValidationErrorTemplate>
<DataGrid.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Path=Name}" FontWeight="Bold" Padding="3"/>
StackPanel>
DataTemplate>
GroupStyle.HeaderTemplate>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Expander IsExpanded="{Binding IsExpanded1, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" x:Name="exptest" Height="Auto" HorizontalAlignment="Left"
VerticalAlignment="Stretch" >
<Expander.Header>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=Name}" />
StackPanel>
Expander.Header>
<ItemsPresenter />
Expander>
ControlTemplate>
Setter.Value>
Setter>
Style>
GroupStyle.ContainerStyle>
GroupStyle>
DataGrid.GroupStyle>
<DataGrid.RowStyle>
<Style TargetType="{x:Type DataGridRow}">
<Style.Triggers>
<DataTrigger Binding="{Binding RecordStatus}" Value="Deleted">
<Setter Property="Visibility" Value="Collapsed"/>
DataTrigger>
<DataTrigger Binding="{Binding IsVisible}" Value="False">
<Setter Property="Visibility" Value="Collapsed"/>
DataTrigger>
Style.Triggers>
Style>
DataGrid.RowStyle>
<i:Interaction.Triggers>
<i:EventTrigger EventName="PreviewKeyDown">
<mvvmEvent:EventToCommand
Command="{Binding ChannelElementPreviewKeyDownCommand,Mode=OneWay}"
PassEventArgsToCommand="True">
mvvmEvent:EventToCommand>
i:EventTrigger>
<i:EventTrigger EventName="GotKeyboardFocus">
<mvvmEvent:EventToCommand
Command="{Binding GridGotKeyboardFocus,Mode=OneWay}"
PassEventArgsToCommand="True">
mvvmEvent:EventToCommand>
i:EventTrigger>
i:Interaction.Triggers>
<DataGrid.ContextMenu>
<ContextMenu>
<MenuItem Click="grdChannelElement_rightClick" Header="Export To Excel"/>
ContextMenu>
DataGrid.ContextMenu>
DataGrid>
Grid>

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Mario Scheeren7y ago
Rendering should all be done by DirectX and GPU so if there is a difference in Hardware the CPU has to take over and then that is your bottleneck.WPF sucks bc of this issues when handling many items in any container.
0