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POCopy+Paste DataGridViewSelectedCellCollection to/from Clipboard
 

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  1. POCopy+Paste DataGridViewSelectedCellCollection to/from Clipboard
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    <p>Assume that I have a <code>DataGridView</code> which is populated by a number of different <code>strings</code> (different length, numbers and plain text) in Cells.</p> <p>Want I want to do is to copy and paste these strings, which could be any selection of Cells.</p> <p>My approach to <strong>copy</strong> is:</p> <pre><code>if (e.Control &amp;&amp; e.KeyCode == Keys.C) { // copy DataGridViewSelectedCellCollection tmpCells = this.MyDataGridView.SelectedCells; Clipboard.SetDataObject(tmpCells); } </code></pre> <p>Which is working properly.</p> <p>My approach to <strong>paste</strong> is:</p> <pre><code>if (e.Control &amp;&amp; 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 &lt; rowsInClipboard.Length; ++iRow ) { string[] valuesInRow = rowsInClipboard[iRow].Split(columnSplitter); for (int iCol = 0; iCol &lt; valuesInRow.Length; ++iCol ) { if (this.MyDataGridView.ColumnCount-1 &gt;= c + iCol) { DataGridViewCell DGVC = (this.MyDataGridView.Rows[r + iRow].Cells[c + iCol]); DGVC.Value = valuesInRow[iCol]; } } } } } </code></pre> <p>Which works fine <strong>UNLESS</strong> the string itself <strong>DOES NOT</strong> contain any delimiter I specified with <code>rowSplitter</code> and <code>columnSplitter</code>. But this unfortunately is the case very often. It then separates the string and expands it to the next cell.</p> <p><strong>Example:</strong></p> <pre><code>Cell[n] = {"This string contains a new line delimiter \n but should use only one cell."} </code></pre> <p>Will be pasted to: </p> <pre><code>Cell[n] = {"This string contains a new line delimiter"}; Cell[n+1] = {"but should use only one cell."} </code></pre> <p>So my question is: is it possible to restore the <code>DataGridViewSelectedCellCollection</code> as it was copied to the clipboard before? Just casting from <code>object</code> to <code>DataGridViewSelectedCellCollection</code> will not work:</p> <pre><code>DataGridViewSelectedCellCollection DGSCC = (DataGridViewSelectedCellCollection)dataInClipboard; // compiles, but throws exception at runtime </code></pre> <p>Do I have any other option but parsing each string by a defined formatting?</p>
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