如何通过WPF DataGrid中的DataGrid Header CheckBox选择列的所有CheckBox [英] How to Select All CheckBox of a Column by DataGrid Header CheckBox in WPF DataGrid
本文介绍了如何通过WPF DataGrid中的DataGrid Header CheckBox选择列的所有CheckBox的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个带有一个 CheckBoxColumn 的 DataGrid.在 CheckBoxColumn 的标题中,我添加了一个 CheckBox 来选择该 Datagrid 行的所有复选框.
I have a DataGrid with one CheckBoxColumn. In the header of that CheckBoxColumn I have added a CheckBox to Select all CheckBoxes of that Datagrid Row.
我怎样才能做到这一点?
How can I achieve that?
我的 WPF 数据网格 XAML 代码:
My XAML Code for WPF dataGrid:
<DataGrid AutoGenerateColumns="False" CanUserAddRows="False" Grid.RowSpan="2" Height="130" HorizontalAlignment="Left" IsReadOnly="False" Margin="189,340,0,0" Name="dgCandidate" TabIndex="7" VerticalAlignment="Top" Width="466" Grid.Row="1" >
<DataGrid.Columns>
<DataGridTextColumn x:Name="colCandidateID" Binding="{Binding CandidateID}" Header="SlNo" MinWidth="20" IsReadOnly="True" />
<DataGridTextColumn x:Name="colRegistraion" Binding="{Binding RegisterNo}" Header="Reg. No." IsReadOnly="True" />
<DataGridTextColumn x:Name="colCandidate" Binding="{Binding CandidateName}" Header="Name" MinWidth="250" IsReadOnly="True" />
<DataGridTemplateColumn>
<DataGridTemplateColumn.Header>
<CheckBox Name="chkSelectAll" Checked="chkSelectAll_Checked" Unchecked="chkSelectAll_Unchecked"></CheckBox>
</DataGridTemplateColumn.Header>
<DataGridTemplateColumn.CellTemplate >
<DataTemplate >
<CheckBox x:Name="colchkSelect1" Checked="colchkSelect1_Checked" Unchecked="colchkSelect1_Unchecked" ></CheckBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
推荐答案
将您的 Candidate 类转换成这样:
Convert your Candidate class into something like this:
public class Candidate : DependencyObject
{
//CandidateID Dependency Property
public int CandidateID
{
get { return (int)GetValue(CandidateIDProperty); }
set { SetValue(CandidateIDProperty, value); }
}
public static readonly DependencyProperty CandidateIDProperty =
DependencyProperty.Register("CandidateID", typeof(int), typeof(Candidate), new UIPropertyMetadata(0));
//RegisterNo Dependency Property
public int RegisterNo
{
get { return (int)GetValue(RegisterNoProperty); }
set { SetValue(RegisterNoProperty, value); }
}
public static readonly DependencyProperty RegisterNoProperty =
DependencyProperty.Register("RegisterNo", typeof(int), typeof(Candidate), new UIPropertyMetadata(0));
//CandidateName Dependency Property
public string CandidateName
{
get { return (string)GetValue(CandidateNameProperty); }
set { SetValue(CandidateNameProperty, value); }
}
public static readonly DependencyProperty CandidateNameProperty =
DependencyProperty.Register("CandidateName", typeof(string), typeof(Candidate), new UIPropertyMetadata(""));
//BooleanFlag Dependency Property
public bool BooleanFlag
{
get { return (bool)GetValue(BooleanFlagProperty); }
set { SetValue(BooleanFlagProperty, value); }
}
public static readonly DependencyProperty BooleanFlagProperty =
DependencyProperty.Register("BooleanFlag", typeof(bool), typeof(Candidate), new UIPropertyMetadata(false));
}
在 MainWindow.xaml 中:
in MainWindow.xaml:
<DataGrid ItemsSource="{Binding CandidateList}">
<DataGrid.Columns>
<DataGridTextColumn Header="Id" Binding="{Binding CandidateID}"/>
<DataGridTextColumn Header="RegNr" Binding="{Binding RegisterNo}"/>
<DataGridTextColumn Header="Name" Binding="{Binding CandidateName}"/>
<DataGridTemplateColumn>
<DataGridTemplateColumn.Header>
<CheckBox Checked="CheckBox_Checked" Unchecked="CheckBox_Checked"></CheckBox>
</DataGridTemplateColumn.Header>
<DataGridTemplateColumn.CellTemplate >
<DataTemplate>
<CheckBox IsChecked="{Binding BooleanFlag}"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
在 MainWindow.xaml.cs 中:
in MainWindow.xaml.cs:
public MainWindow()
{
DataContext = this;
CandidateList.Add(new Candidate()
{
CandidateID = 1,
CandidateName = "Jack",
RegisterNo = 123,
BooleanFlag = true
});
CandidateList.Add(new Candidate()
{
CandidateID = 2,
CandidateName = "Jim",
RegisterNo = 234,
BooleanFlag = false
});
InitializeComponent();
}
//List Observable Collection
private ObservableCollection<Candidate> _candidateList = new ObservableCollection<Candidate>();
public ObservableCollection<Candidate> CandidateList { get { return _candidateList; } }
private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
foreach (var item in CandidateList)
{
item.BooleanFlag = true;
}
}
private void UnheckBox_Checked(object sender, RoutedEventArgs e)
{
foreach (var item in CandidateList)
{
item.BooleanFlag = false;
}
}
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