c# - WPF突出显示Datagrid的Selected Row [英] c# - WPF highlight Selected Row of Datagrid
问题描述
TreeView
和 Grid $ c之间创建一些关系$ c>。这个想法是突出显示id等于treenode id的行。
显示颜色属性
public Brush DisplayColor
{
set
{
_displayColor = value;
NotifyPropertyChanged(DisplayColor);
}
get {return _displayColor;
}
选择TreeNode value.id
private MessageElementViewModel _selectedMessageElement;
public MessageElementViewModel SelectedMessageElement
{
set
{
if(_selectedMessageElement == value)return;
this._selectedMessageElement = value;
SearchGrid(value.Id,messageFields);
}
get
{
return this._selectedMessageElement;
}
}
//在网格
public void SearchGrid(int id,ObservableCollection< MessageFieldViewModel> msgField)
{
if(msgField .Any())
DisplayColor = msgField.Last()。Id == id? Brushes.CadetBlue:Brushes.Black;
}
XAML:调用显示颜色属性以突出显示匹配的ID。
DataGrid
TreeView:
< TreeView Margin =644,137,6,6Grid.RowSpan =2ItemsSource ={Binding MessageElements [0] .Children [0] .Children,Mode = TwoWay}
SelectedItemChanged =TreeView_OnSelectedItemChanged
SelectedValuePath =Id>
代码在树视图中选择项目;
<$只读主菜单_MainWindowModel = new MainWindowModel();
private void TreeView_OnSelectedItemChanged(object sender,RoutedPropertyChangedEventArgs< object> e)
{
if(_mainWindowModel!= null)
_mainWindowModel.SelectedMessageElement =(MessageElementViewModel)新值
}
编辑:
< DataGrid Name =DatagridItemsSource ={Binding MessageFields}Margin =4,0,380,6Grid.Row =2AutoGenerateColumns =FalseIsReadOnly = TrueSelectedValue ={Binding SelectedMessageField}
AlternatingRowBackground ={Binding Path = DisplayColor}RowBackground ={Binding Path = DisplayColor}Background =CadetBlue>
< DataGrid.Columns>
< DataGridTextColumn Header =IDBinding ={Binding Id}Width =*/> <! - Foreground ={Binding Path = DisplayColor} - >
< DataGridTextColumn Header =CodeBinding ={Binding Code}Width =*/>
< DataGridTextColumn Header =Field NameBinding ={Binding Name}Width =*/>
< DataGridTextColumn Header =PositionBinding ={Binding Position}Width =*/>
< DataGridTextColumn Header =LengthBinding ={Binding Length}Width =*/>
< /DataGrid.Columns>
为什么我的显示颜色属性不是为了匹配Ids而工作?
我想我找到了一种方法来解决这个问题,但是我讨厌它是因为我正在从代码如果我可以在我的虚拟机中执行,将会很好。
private void TreeView_OnSelectedItemChanged(object sender,RoutedPropertyChangedEventArgs< object> e )
{
foreach(MessageF在Datagrid.ItemsSource中的ieldViewModel项目
{
if(_mainWindowModel!= null)
_mainWindowModel.SelectedMessageElement =(MessageElementViewModel)e.NewValue;
foreach(Datagrid.ItemsSource中的MessageFieldViewModel rowItem)
{
var row = Datagrid.ItemContainerGenerator.ContainerFromItem(rowItem)as DataGridRow;
if(_mainWindowModel.SelectedMessageElement!= null)
if(rowItem.Id == _mainWindowModel.SelectedMessageElement.Id)
row.Background = _mainWindowModel.DisplayColor;
else
row.Background = Brushes.White;
}
}
}
I am working on a WPF application MVVM pattern where I have to create some sort of relationship between a TreeView
and a Grid
. The idea is to highlight a row with a id equal to the treenode id.
Display color property
public Brush DisplayColor
{
set
{
_displayColor = value;
NotifyPropertyChanged("DisplayColor");
}
get { return _displayColor; }
}
Select TreeNode value.id
private MessageElementViewModel _selectedMessageElement;
public MessageElementViewModel SelectedMessageElement
{
set
{
if (_selectedMessageElement == value) return;
this._selectedMessageElement = value;
SearchGrid(value.Id, messageFields);
}
get
{
return this._selectedMessageElement;
}
}
// search matching Id in the grid
public void SearchGrid(int id, ObservableCollection<MessageFieldViewModel> msgField)
{
if (msgField.Any())
DisplayColor = msgField.Last().Id == id ? Brushes.CadetBlue : Brushes.Black;
}
XAML: Call the display color property to highlight a matching id. DataGrid
TreeView:
<TreeView Margin="644,137,6,6" Grid.RowSpan="2" ItemsSource="{Binding MessageElements[0].Children[0].Children, Mode=TwoWay}"
SelectedItemChanged="TreeView_OnSelectedItemChanged"
SelectedValuePath="Id">
Code Behind for treeview select item;
readonly MainWindowModel _mainWindowModel = new MainWindowModel();
private void TreeView_OnSelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
if (_mainWindowModel != null)
_mainWindowModel.SelectedMessageElement = (MessageElementViewModel)e.NewValue;
}
EDIT:
<DataGrid Name="Datagrid" ItemsSource="{Binding MessageFields}" Margin="4,0,380,6" Grid.Row="2" AutoGenerateColumns="False" IsReadOnly="True" SelectedValue="{Binding SelectedMessageField}"
AlternatingRowBackground ="{Binding Path=DisplayColor}" RowBackground="{Binding Path=DisplayColor}" Background="CadetBlue">
<DataGrid.Columns >
<DataGridTextColumn Header="ID" Binding="{Binding Id}" Width="*" /> <!--Foreground="{Binding Path=DisplayColor}-->
<DataGridTextColumn Header="Code" Binding="{Binding Code}" Width="*" />
<DataGridTextColumn Header="Field Name" Binding="{Binding Name}" Width="*" />
<DataGridTextColumn Header="Position" Binding="{Binding Position}" Width="*" />
<DataGridTextColumn Header="Length" Binding="{Binding Length}" Width="*" />
</DataGrid.Columns>
Why is my is my display color property is not working for matching Ids?
I guess I found a way to resolve this but I hate it cause I am doing it from code behind. Would be nice if I can do it in my VM.
private void TreeView_OnSelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
foreach (MessageFieldViewModel item in Datagrid.ItemsSource)
{
if (_mainWindowModel != null)
_mainWindowModel.SelectedMessageElement = (MessageElementViewModel) e.NewValue;
foreach (MessageFieldViewModel rowItem in Datagrid.ItemsSource)
{
var row = Datagrid.ItemContainerGenerator.ContainerFromItem(rowItem) as DataGridRow;
if (_mainWindowModel.SelectedMessageElement != null)
if (rowItem.Id == _mainWindowModel.SelectedMessageElement.Id)
row.Background = _mainWindowModel.DisplayColor;
else
row.Background = Brushes.White;
}
}
}
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