DataGridView 合并单元格

太过爱你忘了你带给我的痛 2022-08-27 15:58 383阅读 0赞

该篇文章不完美

DataGridView 没有提供合并单元格的功能，要实现合并单元格的功能就要在CellPainting事件中使用Graphics.DrawLine和 Graphics.DrawString 自己来“画”。

下面的代码可以对DataGridView第1列内容相同的单元格进行合并：  
        private void dgv\_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)  
        \{  
            // 对第1列相同单元格进行合并  
            if (e.ColumnIndex == 0 && e.RowIndex != -1)  
            \{  
                using  
                    (  
                    Brush gridBrush = new SolidBrush(this.dgv.GridColor),  
                    backColorBrush = new SolidBrush(e.CellStyle.BackColor)  
                    )  
                \{  
                    using (Pen gridLinePen = new Pen(gridBrush))  
                    \{  
                        // 清除单元格  
                        e.Graphics.FillRectangle(backColorBrush, e.CellBounds);

// 画 Grid 边线（仅画单元格的底边线和右边线）  
                        //   如果下一行和当前行的数据不同，则在当前的单元格画一条底边线  
                        if (e.RowIndex < dgv.Rows.Count - 1 &&  
                        dgv.Rows\[e.RowIndex + 1\].Cells\[e.ColumnIndex\].Value.ToString() != e.Value.ToString())  
                            e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left,  
                            e.CellBounds.Bottom - 1, e.CellBounds.Right - 1,  
                            e.CellBounds.Bottom - 1);  
                        // 画右边线  
                        e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1,  
                            e.CellBounds.Top, e.CellBounds.Right - 1,  
                            e.CellBounds.Bottom);

// 画（填写）单元格内容，相同的内容的单元格只填写第一个  
                        if (e.Value != null)  
                        \{  
                            if (e.RowIndex > 0 &&dgv.Rows\[e.RowIndex - 1\].Cells\[e.ColumnIndex\].Value.ToString() == e.Value.ToString())  
                            \{ \}  
                            else  
                            \{  
                                e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,  
                                    Brushes.Black, e.CellBounds.X + 2,  
                                    e.CellBounds.Y + 5, StringFormat.GenericDefault);  
                            \}  
                        \}  
                        e.Handled = true;  
                    \}  
                \}  
            \}

转自[http://www.cnblogs.com/yuanermen/archive/2007/03/29/692683.aspx][http_www.cnblogs.com_yuanermen_archive_2007_03_29_692683.aspx]

[http_www.cnblogs.com_yuanermen_archive_2007_03_29_692683.aspx]: http://www.cnblogs.com/yuanermen/archive/2007/03/29/692683.aspx