XAF 如何从Excel复制多个单元格内容到GridView（收藏）

using System;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.Persistent.Base;
using DevExpress.ExpressApp.Win.Editors;
using DevExpress.XtraGrid.Views.Grid;

namespace XafExpandExtendTest.Module
{
public partial class CopyPasteListViewController : ViewController
{
public CopyPasteListViewController()
{
InitializeComponent();
RegisterActions(components);
TargetViewType = ViewType.ListView;
}

private void simpleAction1_Execute(object sender, SimpleActionExecuteEventArgs e)
{
ListView lv = View as ListView;
GridView gv = (lv.Editor as GridListEditor).GridView;
XtraGridHelper.GridViewClipboardPaste(gv);
}
}
}

3.實現代碼：

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraEditors.Repository;
using DevExpress.XtraEditors.Controls;
namespace XafExpandExtendTest.Module
{
public class XtraGridHelper
{
private static string ClipboardText
{
get
{
string value = string.Empty;
IDataObject iData = Clipboard.GetDataObject();
if (iData != null)
{
if (iData.GetDataPresent(DataFormats.Text))
{
value = iData.GetData(DataFormats.Text) as string;
}
}
return value;
}
set
{
Clipboard.SetDataObject(value);
}
}
//private static string[] ClipboardTextLines
//{
//    get
//    {
//        return XtraGridHelper.ClipboardText.Split(' ');
//    }
//}

public static void PasteTable(GridView gridView)
{
gridView.ClearSorting();
int originalFocusedVisibleColIndex = gridView.FocusedColumn.VisibleIndex;
string[] clipboardTextLines = XtraGridHelper.ClipboardTextLines;

// paste data from clipboard into row cells
foreach (string line in clipboardTextLines)
{
if (line != string.Empty)
{
string[] lineFragments = line.Split('\t');
foreach (string lineFragment in lineFragments)
{
// 'paste' in new value
gridView.ShowEditor();
if (gridView.ActiveEditor != null)
{
gridView.ActiveEditor.Text = lineFragment.Trim();
gridView.CloseEditor();
}

// move to next visible column if next visible column exists
if (gridView.FocusedColumn.VisibleIndex < gridView.VisibleColumns.Count - 1)
{
gridView.FocusedColumn = gridView.VisibleColumns[gridView.FocusedColumn.VisibleIndex + 1];
}
else
{
break; //stop 'pasting' in focused row
}
}
// move to next row
if (gridView.FocusedRowHandle < gridView.RowCount - 1)
{
gridView.MoveNext();
gridView.FocusedColumn = gridView.VisibleColumns[originalFocusedVisibleColIndex];
}
else
{
break; //stop 'pasting' in the grid
}
}
}
}

/*You might consider pointing to kb articles that have the same paste functionality;
* the article refrenced by Brendon adds rows when a paste action is invoked.
* The solution presented in this thread pastes values into existing cells, relative to the focused cell.
* And man do I hate when I see questions posted with no answers, like the one that started this thread.
* Here is an update to my solution above, it only accomidates the column and edit types in my grid...
*/
public static void GridViewClipboardPaste(GridView gridView)
{
gridView.ClearSorting();
int originalFocusedVisibleColIndex = gridView.FocusedColumn.VisibleIndex;
string[] clipboardTextLines = XtraGridHelper.ClipboardTextLines;

gridView.BeginUpdate(); //lock grid for update
// paste data from clipboard into row cells
foreach (string line in clipboardTextLines)
{
if (line != string.Empty)
{
string[] lineFragments = line.Split('\t');
foreach (string lineFragment in lineFragments)
{
string clipboardString = lineFragment.Trim();

// 'paste' in new value
try
{
RepositoryItem edit = gridView.FocusedColumn.ColumnEdit;
if (edit != null)
{
switch (edit.EditorTypeName)
{
case "ImageComboBoxEdit":
RepositoryItemImageComboBox imageComboBoxEdit = (RepositoryItemImageComboBox)edit;
foreach (ImageComboBoxItem item in imageComboBoxEdit.Items)
{
if (item.Description.Equals(clipboardString))
{
gridView.SetRowCellValue(gridView.FocusedRowHandle, gridView.FocusedColumn, item.Value);
break;
}
}
break;
case "CheckEdit":
bool checkValue;
if (Boolean.TryParse(clipboardString, out checkValue))
{
gridView.SetRowCellValue(gridView.FocusedRowHandle, gridView.FocusedColumn, checkValue);
}
break;
}
}
else
{
object newValue = null;
switch (gridView.FocusedColumn.ColumnType.Name)
{
case "String":
newValue = clipboardString;
break;
case "Boolean":
newValue = Boolean.Parse(clipboardString);
break;
case "Int32":
newValue = Int32.Parse(clipboardString);
break;
}
gridView.SetRowCellValue(gridView.FocusedRowHandle, gridView.FocusedColumn, newValue);
}
}
catch (Exception ex)
{
//do nothing
}

// move to next visible column if next visible column exists
if (gridView.FocusedColumn.VisibleIndex < gridView.VisibleColumns.Count - 1)
{
gridView.FocusedColumn = gridView.VisibleColumns[gridView.FocusedColumn.VisibleIndex + 1];
}
else
{
break; //stop 'pasting' in focused row
}
}
// move to next row
if (gridView.FocusedRowHandle < gridView.RowCount - 1)
{
gridView.MoveNext();
gridView.FocusedColumn = gridView.VisibleColumns[originalFocusedVisibleColIndex];
}
else
{
break; //stop 'pasting' in the grid
}
}
}
gridView.EndUpdate(); //lock grid for update
}
////////////////////////////////////////////////////////////////////
private static string[] ClipboardTextLines
{
get
{
var clipboardText = ClipboardText;
if (clipboardText.Contains(Environment.NewLine))
{
return clipboardText.Trim().Replace(Environment.NewLine, "\n") .Split('\n');
// Replace CRLF with just CR then Split.
}

return clipboardText.Split(' ');
}
}

// And this is what I did to speed it up:
public static void PasteTable2(GridView gridView)
{
gridView.ClearSorting();
var clipboardTextLines = new List<string>(ClipboardTextLines);
// If we have too many rows trim the list.
if (gridView.RowCount < clipboardTextLines.Count)
clipboardTextLines = new List<string>(clipboardTextLines.GetRange(0, gridView.RowCount));
var currentCol = gridView.FocusedColumn;
var numberOfColumnsThatCanBePastedTo = gridView.VisibleColumns.Count - currentCol.VisibleIndex;
var pasteList = new List<List<string>>();
foreach (var line in clipboardTextLines)
{
var rowValues = new List<string>(line.Split('\t'));
// Make sure we don't overshoot the columns
if(rowValues.Count > numberOfColumnsThatCanBePastedTo)
rowValues = new List<string>(rowValues.GetRange(0, numberOfColumnsThatCanBePastedTo));
pasteList.Add(rowValues);
}
var currentRow = gridView.FocusedRowHandle;
for (int i = 0; i < pasteList.Count; i++)
{
var pasteRow = currentRow + i;
for (int j = 0; j < pasteList[i].Count; j++)
{
var pasteCol = currentCol.VisibleIndex + j;
gridView.SetRowCellValue(pasteRow, gridView.VisibleColumns[pasteCol], pasteList[i][j]);
}
}
}
}
}