• 遍历WPF DataGrid单元格


    • using System.Windows.Controls; 
    • using System.Windows.Controls.Primitives; 
    • using System.Windows.Media; 
    •  
    • namespace Splash.WPF 
    •     public static class DataGridPlus 
    •     { 
    •         /// <summary> 
    •         /// 获取DataGrid控件单元格 
    •         /// </summary> 
    •         /// <param name="dataGrid">DataGrid控件</param> 
    •         /// <param name="rowIndex">单元格所在的行号</param> 
    •         /// <param name="columnIndex">单元格所在的列号</param> 
    •         /// <returns>指定的单元格</returns> 
    •         public static DataGridCell GetCell(this DataGrid dataGrid, int rowIndex, int columnIndex)         
    •         { 
    •             DataGridRow rowContainer = dataGrid.GetRow(rowIndex); 
    •             if (rowContainer != null) 
    •             { 
    •                 DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(rowContainer); 
    •                 DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex); 
    •                 if (cell == null) 
    •                 { 
    •                     dataGrid.ScrollIntoView(rowContainer, dataGrid.Columns[columnIndex]); 
    •                     cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex); 
    •                 } 
    •                 return cell; 
    •             } 
    •             return null; 
    •         } 
    •  
    •         /// <summary> 
    •         /// 获取DataGrid的行 
    •         /// </summary> 
    •         /// <param name="dataGrid">DataGrid控件</param> 
    •         /// <param name="rowIndex">DataGrid行号</param> 
    •         /// <returns>指定的行号</returns> 
    •         public static DataGridRow GetRow(this DataGrid dataGrid, int rowIndex)         
    •         { 
    •             DataGridRow rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(rowIndex); 
    •             if (rowContainer == null) 
    •             { 
    •                 dataGrid.UpdateLayout(); 
    •                 dataGrid.ScrollIntoView(dataGrid.Items[rowIndex]); 
    •                 rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(rowIndex); 
    •             } 
    •             return rowContainer; 
    •         } 
    •  
    •         /// <summary> 
    •         /// 获取父可视对象中第一个指定类型的子可视对象 
    •         /// </summary> 
    •         /// <typeparam name="T">可视对象类型</typeparam> 
    •         /// <param name="parent">父可视对象</param> 
    •         /// <returns>第一个指定类型的子可视对象</returns> 
    •         public static T GetVisualChild<T>(Visual parent) where T : Visual 
    •         { 
    •             T child = default(T); 
    •             int numVisuals = VisualTreeHelper.GetChildrenCount(parent); 
    •             for (int i = 0; i < numVisuals; i++) 
    •             { 
    •                 Visual v = (Visual)VisualTreeHelper.GetChild(parent, i); 
    •                 child = v as T; 
    •                 if (child == null) 
    •                 { 
    •                     child = GetVisualChild<T>(v); 
    •                 } 
    •                 if (child != null) 
    •                 { 
    •                     break; 
    •                 } 
    •             } 
    •             return child; 
    •         } 
    •     } 
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  • 原文地址:https://www.cnblogs.com/HelloXZ/p/3799582.html
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