DataGridView 应用(二)显示行号,合并单元格 2008年04月16日 星期三 14:45 /// <summary>
/// 显示行号 /// </summary>
private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{
System.Drawing.Rectangle rectangle = new System.Drawing.Rectangle(e.RowBounds.Location.X,e.RowBounds.Location.Y,dataGridView1.RowHeadersWidth - 4,e.RowBounds.Height);
TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(), dataGridView1.RowHeadersDefaultCellStyle.Font, rectangle, dataGridView1.RowHeadersDefaultCellStyle.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.Right); }
//---------------------------------------------------------------------------------------------------------------------------------
/// <summary> /// 合并单元格 /// </summary>
private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
// 对第1列和第二列相同单元格进行合并
if (e.ColumnIndex == 0 && e.RowIndex != -1 || e.ColumnIndex == 1 && e.RowIndex != -1)
{
Brush gridBrush = new SolidBrush(this.dgvContract.GridColor);
SolidBrush 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 < dgvContract.Rows.Count - 1 && dataGridView1.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 && dataGridView1.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;
}
}
}