Question

我有一个HeadersVisibility="None"的DataGrid。我想在DataGrid之外创建一个Button，它与我点击DataGrid的n列（命令列）完全一样。

我尝试过以下代码（myDataGrid是我的DataGrid的名称）：

private void button_Click(object sender, RoutedEventArgs e)
{
     DataGridColumn column = myDataGrid.Columns[0];
     DataGridColumnHeader columnHeader = GetColumnHeaderFromColumn(column);
     columnHeader.OnClick();
}

但由于其保护级别，函数DataGridColumnHeader.OnClick（）无法访问。

我还看了class DataGrid namespace System.Windows.Controls我找到的public event DataGridSortingEventHandler Sorting; /// <summary> /// Protected method which raises the sorting event and does default sort /// </summary> /// <param name="eventArgs"></param> protected virtual void OnSorting(DataGridSortingEventArgs eventArgs) { eventArgs.Handled = false; if (Sorting != null) { Sorting(this, eventArgs); } if (!eventArgs.Handled) { DefaultSort( eventArgs.Column, /* clearExistinSortDescriptions */ (Keyboard.Modifiers & ModifierKeys.Shift) != ModifierKeys.Shift); } } /// <summary> /// Method to perform sorting on datagrid /// </summary> /// <param name="sortColumn"></param> internal void PerformSort(DataGridColumn sortColumn) { Debug.Assert(sortColumn != null, "column should not be null"); if (!CanUserSortColumns || !sortColumn.CanUserSort) { return; } if (CommitAnyEdit()) { PrepareForSort(sortColumn); DataGridSortingEventArgs eventArgs = new DataGridSortingEventArgs(sortColumn); OnSorting(eventArgs); if (Items.NeedsRefresh) { try { Items.Refresh(); } catch (InvalidOperationException invalidOperationException) { Items.SortDescriptions.Clear(); throw new InvalidOperationException(SR.Get(SRID.DataGrid_ProbableInvalidSortDescription), invalidOperationException); } } } }：

public class CarDTO
{
    public int CarID { get; set; }
    public string Manufacturer { get; set; }
    public List<CarOptionDTO> CarOptions { get; set; }
}

但我无法使用它。我怎么能这样做呢？

Answer 1

您应该使用SortDescriptions集合。此集合允许您提供有关如何对视图中的项目进行排序的一组规则。

您可以在此处找到有关如何使用它的一个很好的示例：https://stackoverflow.com/a/19952233/6597895

public static void SortDataGrid(DataGrid dataGrid, int columnIndex = 0, ListSortDirection sortDirection = ListSortDirection.Ascending)
{
    var column = dataGrid.Columns[columnIndex];

    // Clear current sort descriptions
    dataGrid.Items.SortDescriptions.Clear();

    // Add the new sort description
    dataGrid.Items.SortDescriptions.Add(new SortDescription(column.SortMemberPath, sortDirection));

    // Apply sort
    foreach (var col in dataGrid.Columns)
    {
        col.SortDirection = null;
    }
    column.SortDirection = sortDirection;

    // Refresh items to display sort
    dataGrid.Items.Refresh();
}

Answer 2

您必须在＆＃39; dataView＆＃39;上应用排序。并将其重新绑定到dataGrid。

private void SortButton_Click(object sender, System.EventArgs e)
{
   if(order == SORT_ORDER.ASC)
   {
     //Ascending   
     this.BindData(SORT_ORDER.DESC);
   }
   else
   {
     //Descending   
     this.BindData(SORT_ORDER.ASC);
   }
}

private void BindData(SORT_ORDER order)
{
   //here read data from your datasource, by implementing that logic in 'GetDataSource()' function
    DataView dv = this.GetDataSource().DefaultView;

    if(order == SORT_ORDER.ASC)
    {
        dv.Sort = "Address ASC";
        this.SortLabel.Text = "Current sorting order is ascending";
    }
    else
    {
        dv.Sort = "Address DESC";
        this.SortLabel.Text = "Current sorting order is descending";
    }
    this.dgTest.DataSource = dv;
}

或者

如果你可以使用DataGridView，那就容易多了：

this.myDataGrid.Sort(this.dataGridViewTextBoxColumn1, ListSortDirection.Descending);

通过单击DataGrid的ColumnHeader上没有的按钮对列进行排序c＃

2 个答案: