wpf GridControl selectAll UnSelect

蔚落 2021-11-19 13:52 225阅读 0赞

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1 <Window x:Class="WpfApplication1.GridControlView"
     2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     3         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     4         xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid" 
     5         xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
     6         xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors"
     7         Title="GridControlView" >
     8     <Grid>
     9         <StackPanel>
    10             <Button Click="BtnInvert_Click">Invert selection</Button>
    11             <Button Click="BtnGetSelected_Click">Get selection</Button>
    12             <dxg:GridControl x:Name="grid" CustomUnboundColumnData="grid_CustomUnboundColumnData" Height="500" ItemsSource="{Binding List}">
    13                 <dxg:GridControl.Columns>
    14                     <dxg:GridColumn FieldName="Id" />
    15                     <dxg:GridColumn FieldName="Number" />
    16                     <dxg:GridColumn FieldName="Selected" UnboundType="Boolean" AllowSorting="False">
    17                         <dxg:GridColumn.CellTemplate>
    18                             <DataTemplate>
    19                                 <dxe:CheckEdit IsChecked="{Binding Data.Selected}" HorizontalAlignment="Center" VerticalAlignment="Center" />
    20                             </DataTemplate>
    21                         </dxg:GridColumn.CellTemplate>
    22                     </dxg:GridColumn>
    23                 </dxg:GridControl.Columns>
    24                 <dxg:GridControl.View>
    25                     <dxg:TableView x:Name="view" AutoWidth="True" />
    26                 </dxg:GridControl.View>
    27             </dxg:GridControl>
    28         </StackPanel>
    29     </Grid>
    30 </Window>

GridControlView.xaml

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1 /// <summary>
     2     /// GridControlView.xaml 的交互逻辑
     3     /// </summary>
     4     public partial class GridControlView : Window
     5     {
     6         public GridControlView()
     7         {
     8             InitializeComponent();
     9             //Dxsl.LoginManage.ViewModels.LookupControlViewModel viewModel = new Dxsl.LoginManage.ViewModels.LookupControlViewModel();
    10 
    11             //this.DataContext = viewModel;
    12             DataContext = data;
    13         }
    14 
    15         TestData data = new TestData();
    16         SelectionHelper<Guid> selectionHelper = new SelectionHelper<Guid>();
    17 
    18         /// <summary>
    19         /// Grid触发事件
    20         /// </summary>
    21         /// <param name="sender"></param>
    22         /// <param name="e"></param>
    23         private void grid_CustomUnboundColumnData(object sender, GridColumnDataEventArgs e)
    24         {
    25             if (e.Column.FieldName != "Selected") return;
    26             Guid key = (Guid)e.GetListSourceFieldValue("Id");
    27             if (e.IsGetData)
    28                 e.Value = selectionHelper.GetIsSelected(key);
    29             if (e.IsSetData)
    30                 selectionHelper.SetIsSelected(key, (bool)e.Value);
    31         }
    32         /// <summary>
    33         /// 全选或者反选
    34         /// </summary>
    35         /// <param name="sender"></param>
    36         /// <param name="e"></param>
    37         private void BtnInvert_Click(object sender, RoutedEventArgs e)
    38         {
    39             for (int i = 0; i < data.List.Count; i++)
    40             {
    41                 int rowHandle = this.grid.GetRowHandleByListIndex(i);
    42                 bool newIsSelected = !selectionHelper.GetIsSelected(data.List[i].Id);
    43                 grid.SetCellValue(rowHandle, "Selected", newIsSelected);
    44             }
    45         }
    46         /// <summary>
    47         /// 获取选中项
    48         /// </summary>
    49         /// <param name="sender"></param>
    50         /// <param name="e"></param>
    51         private void BtnGetSelected_Click(object sender, RoutedEventArgs e)
    52         {
    53             string caption = string.Format("Selected rows (Total: {0})", selectionHelper.GetSelectionCount());
    54             MessageBox.Show(selectionHelper.GetSelectedKeysAsString(), caption);
    55         }
    56     }

GridControlView

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1  /// <summary>
     2     /// 选择帮助类
     3     /// </summary>
     4     /// <typeparam name="KeyType">类型</typeparam>
     5     public class SelectionHelper<KeyType>
     6     {
     7         /// <summary>
     8         /// 选中集合字典
     9         /// </summary>
    10         Dictionary<KeyType, bool> selectedValues = new Dictionary<KeyType, bool>();
    11         /// <summary>
    12         /// 获取key是否被选中
    13         /// </summary>
    14         /// <param name="key">key 值</param>
    15         /// <returns></returns>
    16         public bool GetIsSelected(KeyType key)
    17         {
    18             //声明是否选择变量,默认为false
    19             bool isSelected;
    20             if (selectedValues.TryGetValue(key, out isSelected))
    21                 return isSelected;
    22             return false;
    23         }
    24         /// <summary>
    25         /// 设置选中项的值
    26         /// </summary>
    27         /// <param name="key">key 值</param>
    28         /// <param name="value">true or false</param>
    29         public void SetIsSelected(KeyType key, bool value)
    30         {
    31             if (value)
    32                 selectedValues[key] = value;
    33             else
    34                 selectedValues.Remove(key);
    35         }
    36         /// <summary>
    37         /// 获取集合字典中的选中项
    38         /// </summary>
    39         /// <returns></returns>
    40         public List<KeyType> GetSelectedKeys()
    41         {
    42             List<KeyType> list = new List<KeyType>();
    43             //遍历集合
    44             foreach (KeyType key in selectedValues.Keys)
    45                 list.Add(key);
    46             return list;
    47         }
    48         /// <summary>
    49         /// 获取集合中项 加入StringBuilder 仅测试用
    50         /// </summary>
    51         /// <returns></returns>
    52         public string GetSelectedKeysAsString()
    53         {
    54             List<KeyType> list = GetSelectedKeys();
    55             StringBuilder str = new StringBuilder();
    56             for (int i = 0; i < list.Count; i++)
    57                 str.AppendLine(list[i].ToString());
    58             return str.ToString();
    59         }
    60         /// <summary>
    61         /// 获取选择数量
    62         /// </summary>
    63         /// <returns></returns>
    64         public int GetSelectionCount()
    65         {
    66             return selectedValues.Count;
    67         }
    68     }

SelectionHelper

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1     public class TestData
     2     {
     3         public List<TestDataItem> List { get; private set; }
     4         public TestData()
     5         {
     6             List<TestDataItem> list = new List<TestDataItem>();
     7             for (int i = 0; i < 20; i++)
     8             {
     9                 list.Add(new TestDataItem() { Id = Guid.NewGuid(), Number = i });
    10             }
    11             List = list;
    12         }
    13     }

TestData

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1     public class TestDataItem
    2     {
    3         public Guid Id { get; set; }
    4         public int Number { get; set; }
    5     }

TestDataItem

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转载于:https://www.cnblogs.com/-ShiL/p/Star201310290255.html

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