WPF DataGrid 控件

默认

C# 代码

public partial class DataGridView : Window
{
    public DataGridViewModel viewModel;
    public DataGridView()
    {
        InitializeComponent();
        this.viewModel = new DataGridViewModel();
        this.viewModel.personList.Add(new Person { Id = 1, Name = "马云" });
        this.viewModel.personList.Add(new Person { Id = 2, Name = "刘强东" });
        this.viewModel.personList.Add(new Person { Id = 3, Name = "曹德旺" });
        this.DataContext = this.viewModel;
    }
}
public class Person
{
    public int Id { get; set; }
    public string Name { get; set; }
}
public class DataGridViewModel : INotifyPropertyChanged
{
    public ObservableCollection<Person> personList { set; get; }
    public DataGridViewModel()
    {
        this.personList = new ObservableCollection<Person>();
    }
    public event PropertyChangedEventHandler PropertyChanged;

    public void RaisePropertyChanged(string propertyName)
    {
        if (this.PropertyChanged != null)
        {
            this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

 XAML 代码

<DataGrid ItemsSource="{Binding personList, Mode=TwoWay}" />

 视图效果

 

 

1、DataGrid 加上 RowHeaderWidth="0" 取消最左面的一列

2、CanUserAddRows="False"   表示不让DataGrid自动生成行

 

自动添加行号：

C# 代码

private void dataGrid_LoadingRow(object sender, DataGridRowEventArgs e)
{
    e.Row.Header = e.Row.GetIndex() + 1;
}

 XAML 代码

<DataGrid x:Name="dataGrid" ItemsSource="{Binding personList, Mode=TwoWay}" LoadingRow="dataGrid_LoadingRow"/>

 视图效果

 

按 Enter 键焦点进入下一个单元格

C# 代码

private void dataGrid_PreviewKeyDown(object sender, KeyEventArgs e)
{
    var uie = e.OriginalSource as UIElement;
    if (e.Key == Key.Enter)
    {
        uie.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
        e.Handled = true;
    }
}

 XAML 代码

<DataGrid x:Name="dataGrid" ItemsSource="{Binding personList, Mode=TwoWay}" PreviewKeyDown="dataGrid_PreviewKeyDown"/>

 

取得当前焦点所在的行

C# 代码

private void Button_Click(object sender, RoutedEventArgs e)
{
    var _cells = dataGrid.SelectedCells;
    if (_cells.Any())
    {
　　　　　string columnName =  dataGrid.CurrentColumn.Header.ToString();
        int rowIndex = dataGrid.Items.IndexOf(_cells.First().Item);
    }
}

 

行焦点改变时，获取所有的 cell 值

C# 代码

private void dataGrid_SelectedCellsChanged(object sender, SelectedCellsChangedEventArgs e)
{
    var cells = dataGrid.SelectedCells;
    if (cells.Any())
    {
        int rowIndex = dataGrid.Items.IndexOf(cells.First().Item);
        foreach (var cell in cells)
        {
            string Text = (cell.Column.GetCellContent(cell.Item) as TextBlock).Text;
        }
    }
}

 XAML 代码

<DataGrid x:Name="dataGrid" ItemsSource="{Binding personList, Mode=TwoWay}" SelectedCellsChanged="dataGrid_SelectedCellsChanged"/>

 绑定MVVM行命令

<DataGridTemplateColumn Header="操作" Width="*">
    <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center">
                <Button Content="更新" Tag="{Binding UpgraderName}">
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="Click">
                            <i:InvokeCommandAction CommandParameter="{Binding}"
                                                Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}, Path=DataContext.CommandSave}" />
                        </i:EventTrigger>
                    </i:Interaction.Triggers>
                </Button>
                <Button Content="删除" Tag="{Binding UpgraderName}">
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="Click">
                            <i:InvokeCommandAction CommandParameter="{Binding}"
                                                Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}, Path=DataContext.CommandDelete}" />
                        </i:EventTrigger>
                    </i:Interaction.Triggers>
                </Button>
            </StackPanel>
        </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

 C# 命令

/// <summary>
/// 删除
/// </summary>
private DelegateCommand<UpgraderModel> _commandDelete = null;
public DelegateCommand<UpgraderModel> CommandDelete
{
    get
    {
        if (_commandDelete == null)
        {
            _commandDelete = new DelegateCommand<UpgraderModel>(new Action<UpgraderModel>((model) =>
            {
                //你需要执行的代码
            }));
        }
        return _commandDelete;
    }
}

 隐藏DataGrid最后一行多一个空白行的解决方法

1.产生的原因：该行是为了让用户输入信息到里边预留的空白行。所以即使填充的数据没内容一样会出现空白行，

2.解决方法：将DataGrid的属性CanUserAddRows属性改为False即可

<DataGrid CanUserAddRows="False"></DataGrid>

 

 隐藏DataGrid自动产生默认列名的解决方法

1.解决方法：将DataGrid的属性AutoGenerateColumns属性改为False即可，如：

<DataGrid AutoGenerateColumns="False"></DataGrid>

 

 隐藏DataGrid最前面一列空白不显示的解决方法

1.解决方法：将DataGrid的属性RowHeaderWidth属性改为0即可，如：

<DataGrid RowHeaderWidth="0"></DataGrid>

 DataGrid 禁止表头排序

1.解决方法：将DataGrid的属性CanUserSortColumns属性改为False即可，如：

<DataGrid CanUserSortColumns="False"></DataGrid>

 

WPF Datagrid删除一行

https://www.cnblogs.com/ZXdeveloper/p/3904314.html