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DataGrid数据表格控件

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DataGrid是一个可以多选的数据表格控件。所以，它继承一个支持多选的父类——MultiSelector。

public abstract class MultiSelector : Selector
{
    protected MultiSelector();

    public IList SelectedItems { get; }
    protected bool CanSelectMultipleItems { get; set; }
    protected bool IsUpdatingSelectedItems { get; }

    public void SelectAll();
    public void UnselectAll();
    protected void BeginUpdateSelectedItems();
    protected void EndUpdateSelectedItems();

}

从上面的定义来看，DataGrid多选的结果会保存在SelectedItems 只读属性中，CanSelectMultipleItems 属性用来设置是否开启多选。好，然后我们来看看DataGrid控件的定义，虽然它的属性众多，在学习模板样式之后，我们还会进一步学习这个控件的用法。

一、DataGrid定义

public class DataGrid : MultiSelector
{
    public static readonly DependencyProperty CanUserResizeColumnsProperty;
    public static readonly DependencyProperty CurrentItemProperty;
    public static readonly DependencyProperty CurrentColumnProperty;
    public static readonly DependencyProperty CurrentCellProperty;
    public static readonly DependencyProperty CanUserAddRowsProperty;
    public static readonly DependencyProperty CanUserDeleteRowsProperty;
    public static readonly DependencyProperty RowDetailsVisibilityModeProperty;
    public static readonly DependencyProperty AreRowDetailsFrozenProperty;
    public static readonly DependencyProperty RowDetailsTemplateProperty;
    public static readonly DependencyProperty RowDetailsTemplateSelectorProperty;
    public static readonly DependencyProperty CanUserResizeRowsProperty;
    public static readonly DependencyProperty NewItemMarginProperty;
    public static readonly DependencyProperty SelectionModeProperty;
    public static readonly DependencyProperty SelectionUnitProperty;
    public static readonly DependencyProperty CanUserSortColumnsProperty;
    public static readonly DependencyProperty AutoGenerateColumnsProperty;
    public static readonly DependencyProperty FrozenColumnCountProperty;
    public static readonly DependencyProperty NonFrozenColumnsViewportHorizontalOffsetProperty;
    public static readonly DependencyProperty EnableColumnVirtualizationProperty;
    public static readonly DependencyProperty CanUserReorderColumnsProperty;
    public static readonly DependencyProperty DragIndicatorStyleProperty;
    public static readonly DependencyProperty DropLocationIndicatorStyleProperty;
    public static readonly DependencyProperty ClipboardCopyModeProperty;
    public static readonly DependencyProperty CellsPanelHorizontalOffsetProperty;
    public static readonly DependencyProperty IsReadOnlyProperty;
    public static readonly RoutedCommand CancelEditCommand;
    public static readonly DependencyProperty EnableRowVirtualizationProperty;
    public static readonly RoutedCommand BeginEditCommand;
    public static readonly RoutedCommand CommitEditCommand;
    public static readonly DependencyProperty ColumnWidthProperty;
    public static readonly DependencyProperty MinColumnWidthProperty;
    public static readonly DependencyProperty MaxColumnWidthProperty;
    public static readonly DependencyProperty HorizontalGridLinesBrushProperty;
    public static readonly DependencyProperty VerticalGridLinesBrushProperty;
    public static readonly DependencyProperty RowStyleProperty;
    public static readonly DependencyProperty RowValidationErrorTemplateProperty;
    public static readonly DependencyProperty RowStyleSelectorProperty;
    public static readonly DependencyProperty RowBackgroundProperty;
    public static readonly DependencyProperty AlternatingRowBackgroundProperty;
    public static readonly DependencyProperty RowHeightProperty;
    public static readonly DependencyProperty GridLinesVisibilityProperty;
    public static readonly DependencyProperty RowHeaderWidthProperty;
    public static readonly DependencyProperty VerticalScrollBarVisibilityProperty;
    public static readonly DependencyProperty MinRowHeightProperty;
    public static readonly DependencyProperty HorizontalScrollBarVisibilityProperty;
    public static readonly DependencyProperty RowHeaderTemplateProperty;
    public static readonly DependencyProperty RowHeaderStyleProperty;
    public static readonly DependencyProperty RowHeaderTemplateSelectorProperty;
    public static readonly DependencyProperty CellStyleProperty;
    public static readonly DependencyProperty HeadersVisibilityProperty;
    public static readonly DependencyProperty ColumnHeaderHeightProperty;
    public static readonly DependencyProperty RowHeaderActualWidthProperty;
    public static readonly DependencyProperty ColumnHeaderStyleProperty;

    public DataGrid();

    public static ComponentResourceKey FocusBorderBrushKey { get; }
    public static RoutedUICommand SelectAllCommand { get; }
    public static IValueConverter HeadersVisibilityConverter { get; }
    public static IValueConverter RowDetailsScrollingConverter { get; }
    public static RoutedUICommand DeleteCommand { get; }
    public DataTemplate RowHeaderTemplate { get; set; }
    public DataTemplateSelector RowHeaderTemplateSelector { get; set; }
    public ScrollBarVisibility VerticalScrollBarVisibility { get; set; }
    public ScrollBarVisibility HorizontalScrollBarVisibility { get; set; }
    public bool CanUserAddRows { get; set; }
    public object CurrentItem { get; set; }
    public DataGridColumn CurrentColumn { get; set; }
    public DataGridCellInfo CurrentCell { get; set; }
    public bool CanUserDeleteRows { get; set; }
    public Style RowHeaderStyle { get; set; }
    public DataGridRowDetailsVisibilityMode RowDetailsVisibilityMode { get; set; }
    public bool IsReadOnly { get; set; }
    public Style ColumnHeaderStyle { get; set; }
    public Style RowStyle { get; set; }
    public DataGridHeadersVisibility HeadersVisibility { get; set; }
    public bool AreRowDetailsFrozen { get; set; }
    public Brush AlternatingRowBackground { get; set; }
    public Brush RowBackground { get; set; }
    public StyleSelector RowStyleSelector { get; set; }
    public ObservableCollection<ValidationRule> RowValidationRules { get; }
    public ControlTemplate RowValidationErrorTemplate { get; set; }
    public Brush VerticalGridLinesBrush { get; set; }
    public Brush HorizontalGridLinesBrush { get; set; }
    public DataGridGridLinesVisibility GridLinesVisibility { get; set; }
    public double MaxColumnWidth { get; set; }
    public double MinColumnWidth { get; set; }
    public DataGridLength ColumnWidth { get; set; }
    public bool CanUserResizeColumns { get; set; }
    public ObservableCollection<DataGridColumn> Columns { get; }
    public double RowHeaderWidth { get; set; }
    public double RowHeaderActualWidth { get; }
    public double ColumnHeaderHeight { get; set; }
    public Style CellStyle { get; set; }
    public DataTemplate RowDetailsTemplate { get; set; }
    public double MinRowHeight { get; set; }
    public bool CanUserResizeRows { get; set; }
    public double RowHeight { get; set; }
    public DataTemplateSelector RowDetailsTemplateSelector { get; set; }
    public double CellsPanelHorizontalOffset { get; }
    public DataGridClipboardCopyMode ClipboardCopyMode { get; set; }
    public Style DropLocationIndicatorStyle { get; set; }
    public bool CanUserReorderColumns { get; set; }
    public bool EnableColumnVirtualization { get; set; }
    public bool EnableRowVirtualization { get; set; }
    public Style DragIndicatorStyle { get; set; }
    public double NonFrozenColumnsViewportHorizontalOffset { get; }
    public int FrozenColumnCount { get; set; }
    public bool AutoGenerateColumns { get; set; }
    public Thickness NewItemMargin { get; }
    public bool CanUserSortColumns { get; set; }
    public DataGridSelectionUnit SelectionUnit { get; set; }
    public DataGridSelectionMode SelectionMode { get; set; }
    public IList<DataGridCellInfo> SelectedCells { get; }
    protected internal override bool HandlesScrolling { get; }

    public event DataGridSortingEventHandler Sorting;
    public event EventHandler AutoGeneratedColumns;
    public event EventHandler<DataGridAutoGeneratingColumnEventArgs> AutoGeneratingColumn;
    public event EventHandler<DragDeltaEventArgs> ColumnHeaderDragDelta;
    public event EventHandler<DragStartedEventArgs> ColumnHeaderDragStarted;
    public event EventHandler<DragCompletedEventArgs> ColumnHeaderDragCompleted;
    public event SelectedCellsChangedEventHandler SelectedCellsChanged;
    public event EventHandler<DataGridColumnReorderingEventArgs> ColumnReordering;
    public event EventHandler<DataGridRowDetailsEventArgs> RowDetailsVisibilityChanged;
    public event EventHandler<DataGridRowEventArgs> UnloadingRow;
    public event EventHandler<DataGridRowDetailsEventArgs> LoadingRowDetails;
    public event InitializingNewItemEventHandler InitializingNewItem;
    public event EventHandler<DataGridPreparingCellForEditEventArgs> PreparingCellForEdit;
    public event EventHandler<DataGridBeginningEditEventArgs> BeginningEdit;
    public event EventHandler<EventArgs> CurrentCellChanged;
    public event EventHandler<DataGridCellEditEndingEventArgs> CellEditEnding;
    public event EventHandler<DataGridRowEditEndingEventArgs> RowEditEnding;
    public event EventHandler<DataGridRowEventArgs> LoadingRow;
    public event EventHandler<DataGridColumnEventArgs> ColumnDisplayIndexChanged;
    public event EventHandler<DataGridRowDetailsEventArgs> UnloadingRowDetails;
    public event EventHandler<AddingNewItemEventArgs> AddingNewItem;
    public event EventHandler<DataGridRowClipboardEventArgs> CopyingRowClipboardContent;
    public event EventHandler<DataGridColumnEventArgs> ColumnReordered;

    public static Collection<DataGridColumn> GenerateColumns(IItemProperties itemProperties);
    public bool BeginEdit();
    public bool BeginEdit(RoutedEventArgs editingEventArgs);
    public bool CancelEdit();
    public bool CancelEdit(DataGridEditingUnit editingUnit);
    public void ClearDetailsVisibilityForItem(object item);
    public DataGridColumn ColumnFromDisplayIndex(int displayIndex);
    public bool CommitEdit();
    public bool CommitEdit(DataGridEditingUnit editingUnit, bool exitEditingMode);
    public Visibility GetDetailsVisibilityForItem(object item);
    public override void OnApplyTemplate();
    public void ScrollIntoView(object item);
    public void ScrollIntoView(object item, DataGridColumn column);
    public void SelectAllCells();
    public void SetDetailsVisibilityForItem(object item, Visibility detailsVisibility);
    public void UnselectAllCells();
    protected override void ClearContainerForItemOverride(DependencyObject element, object item);
    protected override DependencyObject GetContainerForItemOverride();
    protected override bool IsItemItsOwnContainerOverride(object item);
    protected override Size MeasureOverride(Size availableSize);
    protected virtual void OnAddingNewItem(AddingNewItemEventArgs e);
    protected virtual void OnAutoGeneratedColumns(EventArgs e);
    protected virtual void OnAutoGeneratingColumn(DataGridAutoGeneratingColumnEventArgs e);
    protected virtual void OnBeginningEdit(DataGridBeginningEditEventArgs e);
    protected virtual void OnCanExecuteBeginEdit(CanExecuteRoutedEventArgs e);
    protected virtual void OnCanExecuteCancelEdit(CanExecuteRoutedEventArgs e);
    protected virtual void OnCanExecuteCommitEdit(CanExecuteRoutedEventArgs e);
    protected virtual void OnCanExecuteCopy(CanExecuteRoutedEventArgs args);
    protected virtual void OnCanExecuteDelete(CanExecuteRoutedEventArgs e);
    protected virtual void OnCellEditEnding(DataGridCellEditEndingEventArgs e);
    protected override void OnContextMenuOpening(ContextMenuEventArgs e);
    protected virtual void OnCopyingRowClipboardContent(DataGridRowClipboardEventArgs args);
    protected override AutomationPeer OnCreateAutomationPeer();
    protected virtual void OnCurrentCellChanged(EventArgs e);
    protected virtual void OnExecutedBeginEdit(ExecutedRoutedEventArgs e);
    protected virtual void OnExecutedCancelEdit(ExecutedRoutedEventArgs e);
    protected virtual void OnExecutedCommitEdit(ExecutedRoutedEventArgs e);
    protected virtual void OnExecutedCopy(ExecutedRoutedEventArgs args);
    protected virtual void OnExecutedDelete(ExecutedRoutedEventArgs e);
    protected virtual void OnInitializingNewItem(InitializingNewItemEventArgs e);
    protected override void OnIsMouseCapturedChanged(DependencyPropertyChangedEventArgs e);
    protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e);
    protected override void OnItemsSourceChanged(IEnumerable oldValue, IEnumerable newValue);
    protected override void OnKeyDown(KeyEventArgs e);
    protected virtual void OnLoadingRow(DataGridRowEventArgs e);
    protected virtual void OnLoadingRowDetails(DataGridRowDetailsEventArgs e);
    protected override void OnMouseMove(MouseEventArgs e);
    protected virtual void OnRowEditEnding(DataGridRowEditEndingEventArgs e);
    protected virtual void OnSelectedCellsChanged(SelectedCellsChangedEventArgs e);
    protected override void OnSelectionChanged(SelectionChangedEventArgs e);
    protected virtual void OnSorting(DataGridSortingEventArgs eventArgs);
    protected override void OnTemplateChanged(ControlTemplate oldTemplate, ControlTemplate newTemplate);
    protected override void OnTextInput(TextCompositionEventArgs e);
    protected virtual void OnUnloadingRow(DataGridRowEventArgs e);
    protected virtual void OnUnloadingRowDetails(DataGridRowDetailsEventArgs e);
    protected override void PrepareContainerForItemOverride(DependencyObject element, object item);
    protected internal virtual void OnColumnDisplayIndexChanged(DataGridColumnEventArgs e);
    protected internal virtual void OnColumnHeaderDragCompleted(DragCompletedEventArgs e);
    protected internal virtual void OnColumnHeaderDragDelta(DragDeltaEventArgs e);
    protected internal virtual void OnColumnHeaderDragStarted(DragStartedEventArgs e);
    protected internal virtual void OnColumnReordered(DataGridColumnEventArgs e);
    protected internal virtual void OnColumnReordering(DataGridColumnReorderingEventArgs e);
    protected internal virtual void OnPreparingCellForEdit(DataGridPreparingCellForEditEventArgs e);
    protected internal virtual void OnRowDetailsVisibilityChanged(DataGridRowDetailsEventArgs e);

}

二、属性分析

DataGrid提供了大量的依赖属性，合理充分利用这些属性，在开发ERP、CMS、报表等软件时可达到事半功倍的效果。下面我们以表格的形式，先了解一下各属性的功能，然后在本节中学习一些基础属性，以掌握该控件的基本用法，剩下的属性放到模板样式的章节中学习。

属性名称说明备注
FocusBorderBrushKey获取引用焦点的单元格的默认边框画笔的键。
SelectAllCommand表示指示想要选择的所有单元格的命令
HeadersVisibilityConverter获取标题显示隐藏的转换器，即HeadersVisibility属性的转换器
RowDetailsScrollingConverter获取将转换为一个布尔值转换器
DeleteCommand表示指示想要删除当前行的命令。
RowHeaderTemplate获取或设置行标题的模板。重要
RowHeaderTemplateSelector获取或设置行标题的模板选择器。
VerticalScrollBarVisibility是否显示垂直滚动条
HorizontalScrollBarVisibility是否显示水平滚动条
CanUserAddRows是否可以添加新行重要
CurrentItem当前选中行（一般指绑定的数据源的某一个元素）常用
CurrentColumn获取或设置包含当前单元格的列。
CurrentCell获取或设置具有焦点的单元格。
CanUserDeleteRows是否可以删除行重要
RowHeaderStyle获取或设置应用于所有行标题的样式。重要
RowDetailsVisibilityMode获取或设置一个值，该值指示何时显示某行的详细信息部分。
IsReadOnly当前控件是否只读常用
ColumnHeaderStyle获取或设置所有列标题的样式重要
RowStyle获取或设置应用到的所有行的样式。重要
HeadersVisibility获取或设置用于指定行和列标题的可见性的值。
AreRowDetailsFrozen获取或设置一个值，该值指示是否可水平滚动行详细信息。
AlternatingRowBackground获取或设置交替行上使用的背景画笔。重要
RowBackground获取或设置用于行背景的默认画笔。
RowStyleSelector获取或设置行的样式选择器。
RowValidationRules获取用于验证每个行中的数据的规则。
RowValidationErrorTemplate获取或设置用于以可视方式指示行验证中的错误的模板。
VerticalGridLinesBrush获取或设置用于绘制垂直网格线的画笔。常用
HorizontalGridLinesBrush获取或设置用于绘制水平网格线的画笔。
GridLinesVisibility获取或设置一个值，该值指示显示哪些网格线。
MaxColumnWidth获取或设置列和标头中的最大宽度约束
MinColumnWidth获取或设置列和标头中的最小宽度约束
ColumnWidth获取或设置标准宽度和列和中的标头的大小调整模式
CanUserResizeColumns获取或设置用户是否可以通过使用鼠标调整列的宽度。
Columns获取一个集合中的所有列常用
RowHeaderWidth获取或设置行标题列的宽度。
RowHeaderActualWidth获取呈现的行标题列的宽度。
ColumnHeaderHeight获取或设置列标题行的高度。
CellStyle获取或设置所有单元格的样式常用
RowDetailsTemplate获取或设置用于显示行详细信息的模板。
MinRowHeight获取或设置行和中的标头的最小高度约束
CanUserResizeRows获取或设置用户是否可以通过使用鼠标调整行的高度。
RowHeight获取或设置的所有行的建议的高度。
RowDetailsTemplateSelector获取或设置用于行详细信息的模板选择器。
CellsPanelHorizontalOffset获取DataGridCellsPanel的水平偏移量
ClipboardCopyMode获取或设置一个值，指示如何将内容复制到剪贴板。
NonFrozenColumns
ViewportHorizontalOffset		获取在视区的可滚动列的水平偏移量。
FrozenColumnCount获取或设置非滚动列的数量。常用
AutoGenerateColumns获取或设置一个值，该值指示是否自动创建列。常用
NewItemMargin获取或设置新的项目行的边距。
CanUserSortColumns是否可以单击列标题来对列排序。常用
SelectionUnit选择行的模式
SelectionMode是否支持多选重要
SelectedCells获取当前选定的单元格的列表。
HandlesScrolling是否支持自定义键盘滚动。

在上述表格中，Columns属性是DataGrid最基本的一个属性。它是一个ObservableCollection<DataGridColumn>类型的集合，表示DataGrid的列的集合。其实DataGridColumn只是一个抽象基类，我们真正在实例化时，是实例化DataGridColumn的子类，然后放到Columns属性中。

那么DataGridColumn有哪些子类呢？

  • DataGridTextColumn 表示文本内容的列
  • DataGridCheckBoxColumn 表示复选框的列
  • DataGridComboBoxColumn 表示下拉框的列
  • DataGridTemplateColumn 表示模板的列（万金油）

在本列中，我们将以最简单的DataGridTextColumn 为例。

三、事件成员

DataGrid一共有23个事件成员，它们分别如下所示

事件名称说明
Sorting对列进行排序时发生。
AutoGeneratedColumns所有列的自动生成完成后发生。
AutoGeneratingColumn自动生成单独的列时出现。
ColumnHeaderDragDelta每次鼠标位置发生更改时在用户拖动列标题时发生。
ColumnHeaderDragStarted当用户开始使用鼠标拖动列标题时发生。
ColumnHeaderDragCompleted当用户使用鼠标拖动后释放列标题时发生。
SelectedCellsChanged发生时 DataGrid.SelectedCells 集合更改。
ColumnReordering在列移至的显示顺序中的新位置之前发生。
RowDetailsVisibilityChanged当某一行的可见性详细信息元素更改时发生。
UnloadingRow发生时 DataGridRow 对象将成为可供重用。
LoadingRowDetails新的行的详细信息模板应用于行时发生。
InitializingNewItem创建一个新项时出现。
PreparingCellForEdit在单元格进入编辑模式时发生。
BeginningEdit发生行或单元格进入编辑模式之前。
CurrentCellChanged在 DataGrid.CurrentCell 属性的值更改后发生。
CellEditEnding在单元格的编辑将在提交或取消前发生。
RowEditEnding在提交或取消行编辑之前发生。
LoadingRow加载row时
ColumnDisplayIndexChanged其中一个列更改属性时
UnloadingRowDetails行详细信息元素成为可供重用时发生。
AddingNewItem新项添加到DataGrid之前发生
CopyingRowClipboardContent默认行内容准备好之后发生。
ColumnReordered在列移至的显示顺序中的新位置时发生。

四、基本示例

前端代码

<Window x:Class="HelloWorld.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:HelloWorld" 
        xmlns:forms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
        mc:Ignorable="d" FontSize="14"
        Title="WPF中文网之控件课程 - www.wpfsoft.com" Height="350" Width="500">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition Width="200"/>
        </Grid.ColumnDefinitions>
        <DataGrid x:Name="datagrid" 
                  SelectionMode="Extended"
                  IsReadOnly="True" 
                  SelectionChanged="datagrid_Selected">
            <DataGrid.Columns>
                <DataGridTextColumn Header="姓名" Binding="{Binding Name}" />
                <DataGridTextColumn Header="年龄" Binding="{Binding Age}" />
                <DataGridTextColumn Header="地址" Binding="{Binding Address}" />
            </DataGrid.Columns>
        </DataGrid>
        
        <StackPanel Grid.Column="1">
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="姓名:"/>
                <TextBlock x:Name="_TextBlockName"/>
            </StackPanel>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="年龄:"/>
                <TextBlock x:Name="_TextBlockAge"/>
            </StackPanel>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="地址:"/>
                <TextBlock x:Name="_TextBlockAddress"/>
            </StackPanel>
        </StackPanel>
    </Grid>
</Window>

后端代码

namespace HelloWorld
{
    public class Person
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public string Address { get; set; }

    }

    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            
            datagrid.Items.Add(new Person { Name = "张三", Age = 22, Address = "广东省廉江市车板镇大坝村" });
            datagrid.Items.Add(new Person { Name = "李四", Age = 23, Address = "江西省景德镇市市辖区" });
            datagrid.Items.Add(new Person { Name = "王五", Age = 24, Address = "上海市虹口区" });
        }

        private void datagrid_Selected(object sender, RoutedEventArgs e)
        {
            DataGrid datagrid = sender as DataGrid;
            if (datagrid == null) return;

            var person = datagrid.SelectedItem as Person;
            if (person == null) return;

            _TextBlockName.Text = person.Name;
            _TextBlockAge.Text = person.Age + "岁";
            _TextBlockAddress.Text = person.Address;
        }
    }
}

在这个例子中，我们尽量还原了与ListView控件一致的功能， 需要注意的细节是：我们将DataGrid的IsReadOnly="True"，这是因为我们直接将数据元素一条一条的加入到DataGrid的Items属性中，而Items属性本身是一个只读属性，不支持写入。这样的话，当鼠标双击时会报错。错误提示为：

如何解决这个问题呢？这就要用到ItemsControl基类中的ItemsSource数据源属性。

我们需要采用DataGrid另外一种赋值方式——数据源赋值。即把一个集合绑定到该属性上，这样在前端就可以编辑数据源，从而不会引发报错。

只需要改动一点点代码。

List<Person> list = new List<Person>();

list.Add(new Person { Name = "张三", Age = 22, Address = "广东省廉江市车板镇大坝村" });
list.Add(new Person { Name = "李四", Age = 23, Address = "江西省景德镇市市辖区" });
list.Add(new Person { Name = "王五", Age = 24, Address = "上海市虹口区" });

datagrid.ItemsSource = list;

前端代码也可以修改如下，AutoGenerateColumns属性设为不可自动创建列。

<DataGrid x:Name="datagrid" 
          SelectionMode="Extended"
          IsReadOnly="False"
          AutoGenerateColumns="False"
          SelectionChanged="datagrid_Selected">
    <DataGrid.Columns>
        <DataGridTextColumn Header="姓名" Binding="{Binding Name}" />
        <DataGridTextColumn Header="年龄" Binding="{Binding Age}" />
        <DataGridTextColumn Header="地址" Binding="{Binding Address}" />
    </DataGrid.Columns>
</DataGrid>

如此，我们便可以在DataGrid中新增一行，并输入新的数据。

本节内容我们用了两个例子来说明datagrid最基本的数据加载、显示与获取的功能，请在下面的地址中下载示例。

当前课程源码下载：（注明：本站所有源代码请按标题搜索）

文件名：041-《DataGrid数据表格控件》-源代码 -1，041-《DataGrid数据表格控件》-源代码 -2
链接：https://pan.baidu.com/s/1yu-q4tUtl0poLVgmcMfgBA
提取码：wpff

——重庆教主 2023年9月6日

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