如何选择WPF DataGrid中列的所有复选框被DataGrid标题的CheckBox [英] How to Select All CheckBox of a Column by DataGrid Header CheckBox in WPF DataGrid

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本文介绍了如何选择WPF DataGrid中列的所有复选框被DataGrid标题的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CheckBoxColumn一个DataGrid。在CheckBoxColumn的头我添加了一个复选框以选择该DataGrid行的所有复选框。



我怎样才能做到这一点？



我的XAML代码WPF的数据网格：

 <数据网格的AutoGenerateColumns =FALSECanUserAddRows =FALSE Grid.RowSpan =2HEIGHT =130的Horizo​​ntalAlignment =左IsReadOnly =FALSE保证金=189,340,0,0NAME =dgCandidate的TabIndex =7VerticalAlignment =评出的WIDTH =466 Grid.Row =1> 
< D​​ataGrid.Columns> 
< D​​ataGridTextColumn X：NAME =colCandidateID绑定={结合CandidateID}标题=SlNo了minWidth =20IsReadOnly =真/> 
< D​​ataGridTextColumn X：NAME =colRegistraion绑定={结合RegisterNo}标题=注册号。 IsReadOnly =真/> 
< D​​ataGridTextColumn X：NAME =colCandidate绑定={结合CandidateName}标题=名称了minWidth =250IsReadOnly =真/> 
 
< D​​ataGridTemplateColumn> 
< D​​ataGridTemplateColumn.Header> 
<复选框名称=chkSelectAll选中=chkSelectAll_Checked未选中=chkSelectAll_Unchecked>< /复选框> 
< /DataGridTemplateColumn.Header> 
< D​​ataGridTemplateColumn.CellTemplate> 
<&DataTemplate的GT; 
<复选框X：NAME =colchkSelect1选中=colchkSelect1_Checked未选中=colchkSelect1_Unchecked>< /复选框> 
< / DataTemplate中> 
< /DataGridTemplateColumn.CellTemplate> 
< / DataGridTemplateColumn> 
 
< /DataGrid.Columns> 
 
< / DataGrid的>


解决方案

将您的候选类弄成这个样子：

 公共类考生：DependencyObject的
 {
 // CandidateID依赖项属性
公众诠释CandidateID 
 {
 {返回（INT）的GetValue（CandidateIDProperty）; } 
集合{的SetValue（CandidateIDProperty，值）; } 
} 
公共静态只读的DependencyProperty CandidateIDProperty = 
 DependencyProperty.Register（CandidateID的typeof（INT）的typeof（候选），新UIPropertyMetadata（0））; 
 // RegisterNo依赖项属性
公众诠释RegisterNo 
 {
 {返回（INT）的GetValue（RegisterNoProperty）; } 
集合{的SetValue（RegisterNoProperty，值）; } 
} 
公共静态只读的DependencyProperty RegisterNoProperty = 
 DependencyProperty.Register（RegisterNo的typeof（INT）的typeof（候选），新UIPropertyMetadata（0））; 
 // CandidateName依赖项属性
公共字符串CandidateName 
 {
 {返回（串）的GetValue（CandidateNameProperty）; } 
集合{的SetValue（CandidateNameProperty，值）; } 
} 
公共静态只读的DependencyProperty CandidateNameProperty = 
 DependencyProperty.Register（CandidateName的typeof（串）的typeof（候选），新UIPropertyMetadata（））; 
 // BooleanFlag依赖项属性
公共BOOL BooleanFlag 
 {
 {返回（布尔）的GetValue（BooleanFlagProperty）; } 
集合{的SetValue（BooleanFlagProperty，值）; } 
} 
公共静态只读的DependencyProperty BooleanFlagProperty = 
 DependencyProperty.Register（BooleanFlag的typeof（布尔）的typeof（候选），新UIPropertyMetadata（假））; 
}

在MainWindow.xaml：

 <数据网格的ItemsSource ={结合CandidateList}> 
< D​​ataGrid.Columns> 
< D​​ataGridTextColumn标题=ID绑定={结合CandidateID}/> 
< D​​ataGridTextColumn标题=RegNr绑定={结合RegisterNo}/> 
< D​​ataGridTextColumn标题=名称绑定={结合CandidateName}/> 
< D​​ataGridTemplateColumn> 
< D​​ataGridTemplateColumn.Header> 
<复选框选中=CheckBox_Checked未选中=CheckBox_Checked>< /复选框> 
< /DataGridTemplateColumn.Header> 
< D​​ataGridTemplateColumn.CellTemplate> 
<&DataTemplate的GT; 
<复选框器isChecked ={结合BooleanFlag}/> 
< / DataTemplate中> 
< /DataGridTemplateColumn.CellTemplate> 
< / DataGridTemplateColumn> 
< /DataGrid.Columns> 
< / DataGrid的>

在MainWindow.xaml.cs：

 公共主窗口（）
 {
的DataContext =这一点; 
 CandidateList.Add（新考生（）
 {
 CandidateID = 1，
 CandidateName =杰克，
 RegisterNo = 123，
 BooleanFlag = TRUE 
}）; 
 CandidateList.Add（新考生（）
 {
 CandidateID = 2，
 CandidateName =吉姆，
 RegisterNo = 234，
 BooleanFlag = FALSE 
}）; 
的InitializeComponent（）; 
} 
 //名单观察到的集合
私人的ObservableCollection<候选GT; _candidateList =新的ObservableCollection<候选GT;（）; 
公众的ObservableCollection<候选GT; CandidateList {{返回_candidateList; }} 
私人无效CheckBox_Checked（对象发件人，RoutedEventArgs E）
 {
的foreach（在CandidateList VAR项）
 {
 item.BooleanFlag = TRUE; 
} 
} 
私人无效UnheckBox_Checked（对象发件人，RoutedEventArgs E）
 {
的foreach（在CandidateList VAR项）
 {
项.BooleanFlag = FALSE; 
} 
}


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.

How can I achieve that?

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>

解决方案

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));
}

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>

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;
        }
    }

这篇关于如何选择WPF DataGrid中列的所有复选框被DataGrid标题的CheckBox的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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