WPF 实现主从的datagrid以及操作rowdetailtemplate 的方法

原文:WPF 实现主从的datagrid以及操作rowdetailtemplate 的方法

WPF 实现主从的datagrid以及操作rowdetailtemplate 的方法

       最近在做一个项目，其中要用到主从表数据的折叠和隐藏，并且对从表中的数据能够获取和操作，虽然搞了好久，但最终被我推敲出来了，写出来分享一下，让朋友少走弯路，废话不说了，先上效果图：

下面是代码：

前台    <DataGrid ItemsSource="{Binding}"Name="dataGrid1" MouseUp="dataGrid1_MouseUp"...>    <DataGrid.Columns>                       <DataGridTemplateColumn Width="Auto">                           <DataGridTemplateColumn.CellTemplate>                               <DataTemplate>                                   <Expander Expanded="Expander_Expanded"Collapsed="Expander_Collapsed"/>                               </DataTemplate>                           </DataGridTemplateColumn.CellTemplate>                       </DataGridTemplateColumn>                       <DataGridTextColumn Binding="{Binding Facility_type}"FontSize="22" Header="設備類型"   Width="120"/>                       <DataGridTextColumn  FontSize="22"Header="廠房代碼" Width="85" />                       <DataGridTextColumn  FontSize="22" Header="樓層" Width="70" />                       <DataGridTextColumn  FontSize="22"  Header="部門名稱" Width="430" />                       <DataGridTextColumn Binding="{Binding Count_all}"FontSize="22"    Header="設備總數"  Width="100"/>                       <DataGridTextColumn Binding="{Binding Count_no}"FontSize="25"  FontWeight="Bold"   Foreground="Red" Header="未使用數量" Width="115" />                       <DataGridTextColumn Binding="{Binding Count_yes}"FontSize="22"  Foreground="Green"  Header="使用中數量"  Width="115"/>                              </DataGrid.Columns>                    <DataGrid.RowDetailsTemplate >                       <DataTemplate  >                                     <DataGrid Name="dataGrid2" Width="1070"  SelectedValuePath = "dept_code" IsReadOnly="True"  HeadersVisibility="None"HorizontalGridLinesBrush="#FFE0E2DF"VerticalGridLinesBrush="#FFE0E2DF"                                  ItemsSource="{Binding Details}"CanUserAddRows="False"SelectionUnit="FullRow" AutoGenerateColumns="False" MouseUp="dataGrid2_MouseUp">                               <DataGrid.Columns>                                   <DataGridTextColumn   Header=""  Width="150" />                                   <DataGridTextColumn Binding="{Binding building_code}"FontSize="22" Header="廠房代碼" Width="85"/>                                   <DataGridTextColumn Binding="{Binding floor}"FontSize="22"  Header="樓層" Width="70"/>                                   <DataGridTextColumn Binding="{Binding dept_name}"FontSize="22"   Header="部門名稱" Width="430"/>                                   <DataGridTextColumn Binding="{Binding count_all}"FontSize="22"    Header="設備總數"  Width="100"/>                                   <DataGridTextColumn Binding="{Binding count_no}" FontSize="25"  FontWeight="Bold"  Foreground="Red" Header="未使用數量"  Width="115" />                                   <DataGridTextColumn Binding="{Binding count_yes}"FontSize="22"  Foreground="Green"  Header="使用中數量"  Width="115"/>                               </DataGrid.Columns>                        </DataTemplate>                    </DataGrid.RowDetailsTemplate>    ...    </DataGrid>

下面是后台：

using System;     using System.Data;     using System.Windows;     using System.Windows.Input;     using System.Windows.Media;     using System.Windows.Controls;     using System.Collections.ObjectModel;     using System.Windows.Threading;     namespace Getac.DSP     {         /// <summary>         /// HumanWork.xaml 的交互逻辑         /// </summary>         publicpartial class FacilitySum:Window         {             public string Company_code;            // public string Select_item;             publicObservableCollection<Facility> Items { get;set; }             privatedelegate void ThreadDelegate(); //申明一个专用来调用更改线程函数的委托          publicDispatcherTimer ShowTimer;             publicFacilitySum(string company_code)             {                 this.Company_code = company_code;                 InitializeComponent();                 this.WindowState = WindowState.Maximized;               }                         privatevoid Window_Loaded(object sender, RoutedEventArgs e)             {                 //datagrid数据的加载                 Items = new ObservableCollection<Facility>();                 DataSet dsFacility = newBLL.DSP_FACILITY_USE().GetFacility_status_Sum(Company_code);                 DataSet dsFacilityDetail = newBLL.DSP_FACILITY_USE().GetFacility_UseStatus(Company_code);                 int count = dsFacility.Tables[0].Rows.Count;                 for (inti = 0; i < count; i++)                 {                     Items.Add(new Facility(Company_code, i, dsFacility, dsFacilityDetail));                 }                 dataGrid1.Items.Clear();                 dataGrid1.ItemsSource  = Items;                 dataGrid1.Items.Refresh();                 dataGrid1.SelectedValuePath = "facility_type";                }                         //展开，收缩子表的方法              privatevoid Expander_Expanded(object sender, RoutedEventArgs e)             {                 DataGridRow row = FindVisualParent<DataGridRow>(sender as Expander);                 row.DetailsVisibility = System.Windows.Visibility.Visible;             }                                  privatevoid Expander_Collapsed(object sender, RoutedEventArgs e)             {                 DataGridRow row = FindVisualParent<DataGridRow>(sender as Expander);                 row.DetailsVisibility = System.Windows.Visibility.Collapsed;             }             publicT FindVisualParent<T>(DependencyObject child) where T : DependencyObject             {                 DependencyObject parentObject = VisualTreeHelper.GetParent(child);                 if (parentObject == null) returnnull;                 T parent = parentObject asT;                 if (parent != null)                     return parent;                 else                 return FindVisualParent<T>(parentObject);             }              //下面的方法曾让我教头烂额，感叹微软的控件封装的太牛逼了，处理起来有点变态             /// <summary>             /// 找到行明细中嵌套的控件名称             /// </summary>             /// <typeparam name="T"></typeparam>             /// <param name="parent"></param>             /// <param name="name"></param>             /// <returns></returns>             publicT FindVisualChildByName<T>(DependencyObject parent, string name) where T : DependencyObject              {                  if(parent !=null)                  {                     for(inti=0;i<VisualTreeHelper.GetChildrenCount(parent);i++)                     {                         var child = VisualTreeHelper.GetChild(parent, i)as DependencyObject;                         string controlName=child.GetValue(Control.NameProperty)as string;                         if(controlName==name)                         {                             return child as T;                         }                         else                     {                             T result=FindVisualChildByName<T>(child,name);                             if(result!=null)                                 return result;                         }                     }                  }                  return null;              }                          //父表的事件处理驱动             privatevoid dataGrid1_MouseUp(object sender, MouseButtonEventArgs e)             {                 if (dataGrid1.CurrentCell.Column !=null && dataGrid1.CurrentCell.Column.Header!=null)                 {                    string facility_type = (dataGrid1.Columns[1].GetCellContent(dataGrid1.CurrentCell.Item)as TextBlock).Text;                    string head = dataGrid1.CurrentCell.Column.Header.ToString();                      //这边可以根据实际写自己的一些方法                  }             }                       //字表,也就是rowdetailtemplate中的datagrid 的事件处理方法，其中有调用上面的约束泛型类型的方法。             private void dataGrid2_MouseUp(object sender, MouseButtonEventArgs e)             {                  //下面的两行代码很关键             DataGridRow dgr = (DataGridRow)dataGrid1.ItemContainerGenerator.ContainerFromIndex(this.dataGrid1.SelectedIndex);                 DataGrid dg= FindVisualChildByName<DataGrid>(dgr, "dataGrid2") asDataGrid;                  //获取鼠标点击的行每一单元格的值                string facility_type = (dataGrid1.Columns[1].GetCellContent(dataGrid1.CurrentCell.Item)as TextBlock).Text;                 string building_code = (dg.Columns[1].GetCellContent(dg.CurrentCell.Item)as TextBlock).Text;                 string floor = (dg.Columns[2].GetCellContent(dg.CurrentCell.Item)as TextBlock).Text;                 string dept_code =dg.SelectedValue.ToString();                 string head = dg.CurrentCell.Column.Header.ToString();                 //获得一些信息后你可以自己写方法实现需要的功能             }         }         // 定义集合类用于存放栏位值         publicclass Facility         {             //static string FACILITY_TYPE;             public string Facility_type{get; set; }             public string Building_code {get; set; }             public string Floor { get; set; }             public string Dept_code {get; set; }             public string Count_all {get; set; }             public string Count_no {get; set; }             public string Count_yes {get; set; }             public ObservableCollection<Facility_Detail> Details {get; set; }             public Facility(string company_code,int row_index,DataSet dsfacilitySum ,DataSet dsFacilityDetail)             {                             Facility_type = dsfacilitySum.Tables[0].Rows[row_index]["facility_type"].ToString();                 Count_all = dsfacilitySum.Tables[0].Rows[row_index]["count_all"].ToString();                 Count_no = dsfacilitySum.Tables[0].Rows[row_index]["count_no"].ToString();                 Count_yes = dsfacilitySum.Tables[0].Rows[row_index]["count_yes"].ToString();                 Details = new ObservableCollection<Facility_Detail>();                 //详细信息             System.Data.DataTable dtDetail = newSystem.Data.DataTable();                 DataRow[] rowDetail = dsFacilityDetail.Tables[0].Select("facility_type='"+ Facility_type + "'");                 dtDetail = dsFacilityDetail.Tables[0].Clone();                  foreach (DataRow dr inrowDetail)                  {                     Details.Add(newFacility_Detail()                     {                         facility_type = Facility_type,                         building_code = dr["building_code"].ToString(),                         floor = dr["floor"].ToString(),                         dept_code = dr["dept_code"].ToString(),                         dept_name = dr["dept_name"].ToString(),                         count_all = dr["count_all"].ToString(),                         count_no = dr["count_no"].ToString(),                         count_yes = dr["count_yes"].ToString()                     });                  }             }         }         publicclass Facility_Detail         {  //定义属性          public string facility_type {get; set; }             public string building_code {get; set; }             public string floor { get; set; }             public string dept_code {get; set; }             public string dept_name {get; set; }             public string count_all {get; set; }             public string count_no {get; set; }             public string count_yes {get; set; }         }     }

代码虽然很多，但是看下来不觉得繁琐。在这里还要感叹一下，微软的东西，尤其是控件这种东西封装的太死了，你用第三方的控件其实还不如自己写，能明白很多东西。欢迎大家批评指正。