将DataGridViewSelectedCellCollection复制并粘贴到剪贴板

Question

假设我有一个DataGridView，它由单元格中的许多不同的strings（不同的长度，数字和纯文本）填充。

我想要做的是复制和粘贴这些字符串，这可能是任何选择的单元格。

我的方法副本是：

if (e.Control && e.KeyCode == Keys.C) 
{ 
    // copy 
    DataGridViewSelectedCellCollection tmpCells = this.MyDataGridView.SelectedCells; 
    Clipboard.SetDataObject(tmpCells); 
} 

这是正常工作。

我的方法贴是：

if (e.Control && e.KeyCode == Keys.V) 
{ 
    // paste 
    IDataObject dataInClipboard = Clipboard.GetDataObject(); 
    string stringInClipboard = (string)dataInClipboard.GetData(DataFormats.Text); 
    char[] rowSplitter = { '\r', '\n' }; 
    char[] columnSplitter = { '\t' }; 
    string[] rowsInClipboard = stringInClipboard.Split(rowSplitter, StringSplitOptions.RemoveEmptyEntries); 

    int r1 = this.MyDataGridView.SelectedCells[0].RowIndex; 
    int c1 = this.MyDataGridView.SelectedCells[0].ColumnIndex; 
    int r2 = this.MyDataGridView.SelectedCells[this.MyDataGridView.SelectedCells.Count-1].RowIndex; 
    int c2 = this.MyDataGridView.SelectedCells[this.MyDataGridView.SelectedCells.Count-1].ColumnIndex; 

    int r = Math.Min(r1, r2); // Do not care if selection was taken by drag mouse up or down, always start from min 
    int c = Math.Min(c1, c2); // Do not care if selection was taken by drag mouse left or right, always start from min 

    for (int iRow = 0; iRow < rowsInClipboard.Length; ++iRow) 
    { 
     string[] valuesInRow = rowsInClipboard[iRow].Split(columnSplitter); 

     for (int iCol = 0; iCol < valuesInRow.Length; ++iCol) 
     { 
      if (this.MyDataGridView.ColumnCount-1 >= c + iCol) 
      { 

       DataGridViewCell DGVC = (this.MyDataGridView.Rows[r + iRow].Cells[c + iCol]); 

       DGVC.Value = valuesInRow[iCol]; 

      } 
      } 
    } 
    } 
} 

工作正常除非字符串本身DOES NOT包含我rowSplitter和columnSplitter指定任何分隔符。但不幸的是，这种情况经常发生。然后它将字符串分开并将其展开到下一个单元格。

例子：

Cell[n] = {"This string contains a new line delimiter \n but should use only one cell."} 

将被粘贴到：

Cell[n] = {"This string contains a new line delimiter"}; 
Cell[n+1] = {"but should use only one cell."} 

所以我的问题是：是否有可能恢复DataGridViewSelectedCellCollection因为它以前复制到剪贴板？从object只是投放到DataGridViewSelectedCellCollection将不起作用：

DataGridViewSelectedCellCollection DGSCC = (DataGridViewSelectedCellCollection)dataInClipboard; // compiles, but throws exception at runtime 

我必须通过定义的格式的任何其他选择，只能解析每个字符串？

Answer 1

您必须为剪贴板定义自己的格式，该格式将执行默认操作无法为您执行的操作。

在这种特殊情况下

最简单的解决方法是转换多行闯入\n，然后再转换回来时，你贴，但在任何情况下，它意味着没有更多的

DataGridViewSelectedCellCollection tmpCells = this.MyDataGridView.SelectedCells; 
Clipboard.SetDataObject(tmpCells); 

但

DataGridViewSelectedCellCollection tmpCells = this.MyDataGridView.SelectedCells; 
string result = ""; 
foreach(DataGridViewCell cell in tempCells) 
    // ... try to replicate what default clipboard text representation does 
// change line breaks 
Clipboard.SetDataObject(result.Replace("\xd\xa", "\\n")); 

和粘贴将是：

IDataObject dataInClipboard = Clipboard.GetDataObject(); 
string stringInClipboard = dataInClipboard.GetData(DataFormats.Text).ToString().Replace("\\n", "\xd\xa");