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POSingle column DGV to accept clipboard data
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  1. POSingle column DGV to accept clipboard data
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    copied!<p>I've set a windowsform up. Currently it it has a single DataGridView that is linked to a single table in a SQL Server db. I can browse the current data in the table.</p> <p>How do I set things up so that a user can copy and paste a single column of data from an Excel sheet into the DGV ?</p> <p>If, in Excel I have 'x' in A1 and 'y' in A2 then this must preserve the number of rows when pasted into the DGV i.e for this example it would still be over 2 rows</p> <p>I've tried to adapt the following from <a href="http://www.codeproject.com/Articles/36850/DataGridView-Copy-and-Paste" rel="nofollow">Code Project</a>. If fails on the line if <code>(oCell.Value.ToString() != sCells[i])</code> with a <code>NullReferenceException was unhandled</code> What am I doing wrong?</p> <pre><code> private void uxChargeBackDataGridView_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { PasteClipboard(); //uxChargeBackDataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value = Clipboard.GetText(); } private void PasteClipboard() { try { string s = Clipboard.GetText(); string[] lines = s.Split('\n'); int iFail = 0, iRow = uxChargeBackDataGridView.CurrentCell.RowIndex; int iCol = uxChargeBackDataGridView.CurrentCell.ColumnIndex; DataGridViewCell oCell; foreach (string line in lines) { if (iRow &lt; uxChargeBackDataGridView.RowCount &amp;&amp; line.Length &gt; 0) { string[] sCells = line.Split('\t'); for (int i = 0; i &lt; sCells.GetLength(0); ++i) { if (iCol + i &lt; this.uxChargeBackDataGridView.ColumnCount) { oCell = uxChargeBackDataGridView[iCol + i, iRow]; if (!oCell.ReadOnly) { if (oCell.Value.ToString() != sCells[i]) { oCell.Value = Convert.ChangeType(sCells[i], oCell.ValueType); oCell.Style.BackColor = Color.Tomato; } else iFail++; //only traps a fail if the data has changed //and you are pasting into a read only cell } } else { break; } } iRow++; } else { break; } if (iFail &gt; 0) MessageBox.Show(string.Format("{0} updates failed due" + " to read only column setting", iFail)); } } catch (FormatException) { MessageBox.Show("The data you pasted is in the wrong format for the cell"); return; } } </code></pre>
 

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