DataGridView之编码列重绘

实现方式如下：

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private void dgvRelation_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)         {             try             {                 SolidBrush b = new SolidBrush(this.dgvRelation.RowHeadersDefaultCellStyle.ForeColor);                 e.Graphics.DrawString((e.RowIndex + 1).ToString(System.Globalization.CultureInfo.CurrentUICulture),                     this.dgvRelation.DefaultCellStyle.Font, b, e.RowBounds.Location.X + 20, e.RowBounds.Location.Y + 4);             }             catch { return; }         }

效果如下：

注意：使用该方式处理编号列的显示，需要处理cell_click事件，如： if (e.RowIndex == -1||e.ColumnIndex==-1) return;

 升个级

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/// <summary> /// 重绘DataGridView /// </summary> /// <param name="dgv"></param> /// <param name="e"></param> public void PaintDgv(DataGridView dgv, DataGridViewRowPostPaintEventArgs e) {     try     {         SolidBrush b = new SolidBrush(dgv.RowHeadersDefaultCellStyle.ForeColor);         e.Graphics.DrawString((e.RowIndex + 1).ToString(System.Globalization.CultureInfo.CurrentUICulture),             dgv.DefaultCellStyle.Font, b, e.RowBounds.Location.X + 5, e.RowBounds.Location.Y + 4);           // 改变第一列列头内容         dgv.TopLeftHeaderCell.Value = dgv.RowCount.ToString();         dgv.TopLeftHeaderCell.ToolTipText = "查询数据总量为：" + dgv.RowCount.ToString() + "(条)";     }     catch { return; } }

 方式二：通过处理RowStateChanged事件实现

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public void SetDgvNumCloByRowStateChanged(DataGridView dgv, DataGridViewRowStateChangedEventArgs e)        {            int rowCounts = dgv.Rows.Count;            if (rowCounts > 0)            {                for (int i = 0; i < rowCounts; i++)                {                    dgv.Rows[i].HeaderCell.Value = (i + 1).ToString();                }                  // 改变第一列列头内容                dgv.TopLeftHeaderCell.Value = dgv.RowCount.ToString();                dgv.TopLeftHeaderCell.ToolTipText = "查询数据总量为：" + dgv.RowCount.ToString() + "(条)";            }        }

 设置首列列头字体颜色

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/// <summary>        /// 重绘DataGridView        /// </summary>        /// <param name="dgv"></param>        /// <param name="e"></param>        public void PaintDgv(DataGridView dgv, DataGridViewRowPostPaintEventArgs e)        {            try            {                SolidBrush b = new SolidBrush(dgv.RowHeadersDefaultCellStyle.ForeColor);                e.Graphics.DrawString((e.RowIndex + 1).ToString(System.Globalization.CultureInfo.CurrentUICulture),                    dgv.DefaultCellStyle.Font, b, e.RowBounds.Location.X + 5, e.RowBounds.Location.Y + 4);                  // 改变第一列列头内容                dgv.EnableHeadersVisualStyles = false;//允许更改行、列头的字体颜色                dgv.TopLeftHeaderCell.Value = dgv.RowCount.ToString();                dgv.TopLeftHeaderCell.Style.ForeColor = Color.Salmon;                dgv.TopLeftHeaderCell.Style.Font = new Font("微软雅黑", 10, FontStyle.Bold);                dgv.TopLeftHeaderCell.ToolTipText = "查询数据总量为：" + dgv.RowCount.ToString() + "(条)";            }            catch { return; }        }