从Datagrid单元格获取字符串值 [英] Getting String value from Datagrid cell

问题描述

我成功获取了所选行和我想要的单元格信息。



但它看起来像System.Windows.Controls.DataGridCell：ABCDEFG



我只需要ABCDEFG部分作为字符串变量使用。



我已经尝试了所有的铸造和转换方法没有成功...

错误1无法将类型'System.Windows.Controls.DataGridCell'隐式转换为'string'



任何人都可以协助请



大班使用的扩展方法：

 private void dataGrid1_SelectionChanged（object sender，SelectionChangedEventArgs e）
 {
 var selectedRow = dataGrid1.GetSelectedRow（）; 
 var columnCellSC = dataGrid1.GetCell（selectedRow，0）; 
 //这就是我需要在剩余的代码中使用返回值作为字符串
 
 
 
 
} 
 

附加类：

使用System; 
使用System.Collections.Generic; 
使用System.Linq; 
使用System.Text; 
使用System.Windows.Media;使用System.Windows.Controls 
; 
使用System.Windows.Controls.Primitives; 
使用System.Threading.Tasks; 
使用System.Data; 
 
 
名称空间DataGridHelpers 
 {
 ///< summary> 
 /// DataGrid的扩展方法
 ///< / summary> 
公共静态类DataGridHelper 
 {
 ///< summary> 
 ///获取元素的可视子元素
 ///< / summary> 
 ///< typeparam name =T>预期类型< / typeparam> 
 ///< param name =parent>预期元素的父级< / param> 
 ///< returns>可视子项< / returns> 
 public static T GetVisualChild< T>（Visual parent）其中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为T; 
 if（child == null）
 {
 child = GetVisualChild< T>（v）; 
} 
 if（child！= null）
 {
 break; 
} 
} 
返回孩子; 
} 
 ///< summary> 
 ///获取DataGrid 
 ///< / summary>的指定单元格
 ///< param name =dataGrid1> DataGrid实例< / param> 
 ///< param name =row>单元格的行< / param> 
 ///< param name =column>单元格的列索引< / param> 
 ///< returns> DataGrid的单元格< / returns> 
 public static DataGridCell GetCell（this DataGrid dataGrid1，DataGridRow row，int column）
 {
 if（row！= null）
 {
 DataGridCellsPresenter presenter = GetVisualChild< DataGridCellsPresenter> ;（行）; 
 
 if（presenter == null）
 {
 dataGrid1.ScrollIntoView（row，dataGrid1.Columns [column]）; 
 presenter = GetVisualChild< DataGridCellsPresenter>（row）; 
} 
 
 DataGridCell cell =（DataGridCell）presenter.ItemContainerGenerator.ContainerFromIndex（column）; 
 
返回单元格; 
} 
返回null; 
} 
 ///< summary> 
 ///获取DataGrid 
 ///< / summary>的指定单元格
 ///< param name =grid> DataGrid实例< / param> 
 ///< param name =row>单元格的行索引< / param> 
 ///< param name =column>单元格的列索引< / param> 
 ///< returns> DataGrid的单元格< / returns> 
 public static DataGridCell GetCell（this DataGrid grid，int row，int column）
 {
 DataGridRow rowContainer = grid.GetRow（row）; 
返回grid.GetCell（rowContainer，column）; 
} 
 ///< summary> 
 ///获取DataGrid的指定行
 ///< / summary> 
 ///< param name =grid> DataGrid实例< / param> 
 ///< param name =index>行的索引< / param> 
 ///< returns> DataGrid的一行< / returns> 
 public static DataGridRow GetRow（this DataGrid grid，int index）
 {
 DataGridRow row =（DataGridRow）grid.ItemContainerGenerator.ContainerFromIndex（index）; 
 if（row == null）
 {
 //可以虚拟化，进入视图并重试。 
 grid.UpdateLayout（）; 
 grid.ScrollIntoView（grid.Items [index]）; 
 row =（DataGridRow）grid.ItemContainerGenerator.ContainerFromIndex（index）; 
} 
返回行; 
} 
 ///< summary> 
 ///获取DataGrid的选定行
 ///< / summary> 
 ///< param name =grid> DataGrid实例< / param> 
 ///< returns>< / returns> 
 public static DataGridRow GetSelectedRow（this DataGrid grid）
 {
 return（DataGridRow）grid.ItemContainerGenerator.ContainerFromItem（grid.SelectedItem）; 
} 
} 
} 

解决方案

我正在研究类似的问题但是我无法让GetSelectedRow（）函数返回除null之外的任何内容。你能否确认你正在使用的.net版本，我正在尝试使用.net 4.5中的wpf？

  private   void  dgPrimary1_CopyClick（ object  sender，RoutedEventArgs e）
 {
  var  selectedRow = dgPrimary1.GetSelectedRow（）; 
  var  columnCell = dgPrimary1.GetCell（selectedRow， 0 ）; 
 
 
} 

问候，

Tim。

尝试这个..

  var  cellcontent =（TextBlock）columnCellSC.Content; 
  string  cellvalue = cellcontent.Text; 

 string myString = dataGrid1.CurrentItem.ToString（）; 

它给出行值。



并使用以下代码获取单元格值。



http://www.codeproject.com/Questions/162989/How-to-切-A-特定部分从 - A-string.aspx

I successfully get the row selected and the cell info I want.

But it looks like this "System.Windows.Controls.DataGridCell: ABCDEFG"

I only need the ABCDEFG part to use as a string variable.

I’ve tried all the casting and conversion methods with no success…
Error 1 Cannot implicitly convert type 'System.Windows.Controls.DataGridCell' to 'string'

can anyone assist please

Extension methods used from main class:

private void dataGrid1_SelectionChanged(object sender, SelectionChangedEventArgs e)
      {
          var selectedRow = dataGrid1.GetSelectedRow();
          var columnCellSC = dataGrid1.GetCell(selectedRow, 0);
            //THIS IS WHERE I NEED TO BE ABLE TO USE THE RETURNED VALUES AS STRINGS IN THE REST OF MY CODE




}

ADDITIONAL CLASS:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Threading.Tasks;
using System.Data;


namespace DataGridHelpers
{
    /// <summary>
    /// Extension methods for DataGrid
    /// </summary>
    public static class DataGridHelper
    {
        /// <summary>
        /// Gets the visual child of an element
        /// </summary>
        /// <typeparam name="T">Expected type</typeparam>
        /// <param name="parent">The parent of the expected element</param>
        /// <returns>A visual child</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;
        }
        /// <summary>
        /// Gets the specified cell of the DataGrid
        /// </summary>
        /// <param name="dataGrid1">The DataGrid instance</param>
        /// <param name="row">The row of the cell</param>
        /// <param name="column">The column index of the cell</param>
        /// <returns>A cell of the DataGrid</returns>
        public static DataGridCell GetCell(this DataGrid dataGrid1, DataGridRow row, int column)
        {
            if (row != null)
            {
                DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(row);

                if (presenter == null)
                {
                    dataGrid1.ScrollIntoView(row, dataGrid1.Columns[column]);
                    presenter = GetVisualChild<DataGridCellsPresenter>(row);
                }

                DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);

                return cell;
            }
            return null;
        }
        /// <summary>
        /// Gets the specified cell of the DataGrid
        /// </summary>
        /// <param name="grid">The DataGrid instance</param>
        /// <param name="row">The row index of the cell</param>
        /// <param name="column">The column index of the cell</param>
        /// <returns>A cell of the DataGrid</returns>
        public static DataGridCell GetCell(this DataGrid grid, int row, int column)
        {
            DataGridRow rowContainer = grid.GetRow(row);
            return grid.GetCell(rowContainer, column);
        }
        /// <summary>
        /// Gets the specified row of the DataGrid
        /// </summary>
        /// <param name="grid">The DataGrid instance</param>
        /// <param name="index">The index of the row</param>
        /// <returns>A row of the DataGrid</returns>
        public static DataGridRow GetRow(this DataGrid grid, int index)
        {
            DataGridRow row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
            if (row == null)
            {
                // May be virtualized, bring into view and try again.
                grid.UpdateLayout();
                grid.ScrollIntoView(grid.Items[index]);
                row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
            }
            return row;
        }
        /// <summary>
        /// Gets the selected row of the DataGrid
        /// </summary>
        /// <param name="grid">The DataGrid instance</param>
        /// <returns></returns>
        public static DataGridRow GetSelectedRow(this DataGrid grid)
        {
            return (DataGridRow)grid.ItemContainerGenerator.ContainerFromItem(grid.SelectedItem);
        }
    }
}

解决方案

Hi, I'm working on a similar problem but I can't get the GetSelectedRow() function to return anything other than null. Can you confirm what version of .net you are using, I'm trying with wpf in .net 4.5 ?

private void dgPrimary1_CopyClick(object sender, RoutedEventArgs e)
       {
           var selectedRow = dgPrimary1.GetSelectedRow();
           var columnCell = dgPrimary1.GetCell(selectedRow, 0);


       }

Regards,
Tim.

Try this one..

var cellcontent=(TextBlock)columnCellSC.Content;
string cellvalue=cellcontent.Text;

string myString = dataGrid1.CurrentItem.ToString();

it give row value.,

and use the below code to get cell value,.

http://www.codeproject.com/Questions/162989/How-to-cut-a-particular-part-from-a-string.aspx

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