我已经设置了一个窗体。目前它有一个 DataGridView 链接到 SQL Server 数据库中的单个表。我可以浏览表中的当前数据。
如何进行设置,以便用户可以将 Excel 工作表中的单列数据复制并粘贴到 DGV 中?
如果在 Excel 中,我在 A1 中有“x”,在 A2 中有“y”,那么在粘贴到 DGV 时必须保留行数,即对于本示例,它仍将超过 2 行
我试图从Code Project改编以下内容。if 失败就行 if (oCell.Value.ToString() != sCells[i])with a NullReferenceException was unhandledWhat is I doing wrong? 我在做什么错?
    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 < uxChargeBackDataGridView.RowCount && line.Length > 0)
                {
                    string[] sCells = line.Split('\t');
                    for (int i = 0; i < sCells.GetLength(0); ++i)
                    {
                        if (iCol + i < 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 > 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;
        }
    }