求教,如何在winform里面将表头进行合并??急!!!!!!!

http://singlepine.cnblogs.com/archive/2005/11/23/282990.html

解决方案 »

  1.   

    你这个是DataGrid控件,我想问问datagridview控件能否做到?
      

  2.   

    1.功能说明：将连续的多个列合并成一个新列。2.不足之处：不能合并多层。比如下图这样的功能是没有的。 3.使用参考.在form的构造函数里写下如下代码   1. Utility.exGridView.isEnLarged = false;在datagridview的cellpaiting事件中写如下代码   1. Utility.exGridView exG = new Utility.exGridView();
       2. List colNameCollection=new List();
       3. for (int i = 0; i < 10; i++)
       4. {
       5. //"colDraw"+i.ToString()是columnName的属性值
       6. colNameCollection.Add("colDraw" + i.ToString());
       7. }
       8. exG.MergeHeader(sender, e, colNameCollection, "0-9中奖号码分布图");4.效果截图 5.源文件(没找到添加附件的地方，就贴出代码了)   1. using System;
       2. using System.Collections.Generic;
       3. using System.Text;
       4. using System.Windows.Forms;
       5. using System.Drawing;
       6.
       7. namespace Utility
       8. {
       9.     public class exGridView
      10.     {
      11.         #region 合并列时使用到的位置和大小属性
      12.         int cTop = 0;//被合并表头区域的顶部坐标
      13.         int cLeft = 0;//被合并表头区域的左边坐标
      14.         /// <summary>
      15.         /// 被合并表头区域的宽
      16.         /// </summary>
      17.         int cWidth = 0;
      18.         int cHeight = 0;//高
      19.         #endregion 
      20.         /// <summary>
      21.         /// 判断是否已经将datagridview的表头变高了，只增高一次。
      22.         /// </summary>
      23.         public static bool isEnLarged = false;
      24.
      25.         /// <summary>
      26.         /// 合并表头,用在dataGridView的CellPainting事件中。
      27.         /// </summary>
      28.         /// <param name="sender">需要重绘的dataGridview</param>
      29.         /// <param name="e">CellPainting中的参数</param>
      30.         ///<param name="colName">列的集合(列必须是连续的，第一列放在最前面)</param>
      31.         /// <param name="headerText">列合并后显示的文本</param>
      32.         public void MergeHeader(object sender, DataGridViewCellPaintingEventArgs e,List<string> colNameCollection,string headerText)
      33.         {
      34.             if (e.RowIndex == -1)
      35.             {
      36.                 DataGridView dataGridView1=sender as DataGridView;
      37.                 string colName = dataGridView1.Columns[e.ColumnIndex].Name;
      38.                 if (!isEnLarged)
      39.                 {
      40.                     //0.扩展表头高度为当前的2倍
      41.                     dataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
      42.                     dataGridView1.ColumnHeadersHeight = e.CellBounds.Height * 2;
      43.                     isEnLarged = true;
      44.                 }
      45.                 if (colNameCollection.Contains(colName))
      46.                 {
      47.                     #region 重绘列头
      48.                     //1.计算colLen个列的区域
      49.                     if (colNameCollection.IndexOf(colName)==0)
      50.                     {
      51.                         cTop = e.CellBounds.Top;
      52.                         cLeft = e.CellBounds.Left;                        
      53.
      54.                         cWidth = e.CellBounds.Width;
      55.                         cHeight = e.CellBounds.Height/2;
      56.
      57.                         foreach(string colNameItem in colNameCollection)
      58.                         {
      59.                             if (colNameItem.Equals(colName))
      60.                             {//除去自己一个，加了之后colLen-1个列的宽
      61.                                 continue;
      62.                             } 
      63.                             cWidth += dataGridView1.Columns[colNameItem].Width;                           
      64.                         }                       
      65.                     }
      66.
      67.                     Rectangle cArea = new Rectangle(cLeft, cTop, cWidth, cHeight);
      68.                     //2.把区域设置为背景色，没有列的分线及任何文字。
      69.                     using (Brush backColorBrush = new SolidBrush(e.CellStyle.BackColor))
      70.                     {
      71.                         e.Graphics.FillRectangle(backColorBrush, cArea);
      72.
      73.                     }
      74.                     //3.绘制新列头的边框
      75.                     using (Pen gridPen = new Pen(dataGridView1.GridColor))
      76.                     {
      77.                         //3.1 上部边框
      78.                         e.Graphics.DrawLine(gridPen, cLeft, cTop, cLeft + cWidth, cTop);
      79.                         using (Pen hilightPen = new Pen(Color.WhiteSmoke))
      80.                         {
      81.                             //3.2 顶部高光
      82.                             e.Graphics.DrawLine(hilightPen, cLeft, cTop + 1, cLeft + cWidth, cTop + 1);
      83.                             //3.3 左部反光线
      84.                             e.Graphics.DrawLine(hilightPen, cLeft, cTop + 3, cLeft, cTop + cHeight - 2);
      85.                         }
      86.                         //3.4 下部边框
      87.                         e.Graphics.DrawLine(gridPen, cLeft, cTop + cHeight - 1, cLeft + cWidth, cTop + cHeight - 1);
      88.                         //3.5 右部边框                        
      89.                         e.Graphics.DrawLine(gridPen, cLeft + cWidth - 1, cTop, cLeft + cWidth - 1, cTop + cHeight);//(cTop+cHeight)/2);
      90.                     }
      91.                     //4.写文本
      92.                     if (colNameCollection.IndexOf(colName) == 0)
      93.                     {//不是第一列则不写文字。
      94.                         int wHeadStr = (int)(headerText.Length * e.CellStyle.Font.SizeInPoints);
      95.                         int wHeadCell = cWidth;
      96.                         int pHeadLeft = (wHeadCell - wHeadStr) / 2 - 6;
      97.                         using (Brush foreBrush = new SolidBrush(e.CellStyle.ForeColor))
      98.                         {
      99.                             e.Graphics.DrawString(headerText, e.CellStyle.Font, foreBrush, new PointF(cLeft + pHeadLeft, cTop + 3));
     100.                         }
     101.                     }
     102.                    
     103.
     104.                     //5 绘制子列背景
     105.                     int FatherColHeight = e.CellBounds.Height / 2;//上面一行的高度 
     106.                     using (Brush backColorBrush = new SolidBrush(e.CellStyle.BackColor))
     107.                     {
     108.                         e.Graphics.FillRectangle(backColorBrush, new Rectangle(e.CellBounds.X, e.CellBounds.Y + FatherColHeight, e.CellBounds.Width - 1, e.CellBounds.Height / 2 - 1));
     109.                     }
     110.                     //5.1绘制子列的边框                   
     111.                     using (Pen gridPen = new Pen(dataGridView1.GridColor))
     112.                     {
     113.                         using (Pen hilightPen = new Pen(Color.WhiteSmoke))
     114.                         {
     115.                             //5.2 左部反光线
     116.                             e.Graphics.DrawLine(hilightPen, cLeft, cTop + 3 + FatherColHeight, cLeft, cTop + cHeight - 2 + FatherColHeight);
     117.                         }
     118.                         //5.3 下部边框
     119.                         e.Graphics.DrawLine(gridPen, cLeft, cTop + cHeight - 1 + FatherColHeight, cLeft + cWidth, cTop + cHeight - 1 + FatherColHeight);
     120.
     121.                         //5.4 右部边框 
     122.                         e.Graphics.DrawLine(gridPen, e.CellBounds.X + e.CellBounds.Width - 1, e.CellBounds.Top + FatherColHeight, e.CellBounds.X + e.CellBounds.Width - 1, e.CellBounds.Top + e.CellBounds.Height + FatherColHeight);//(cTop+cHeight)/2);                    
     123.
     124.                     }
     125.                     //5.5 写子列的文本
     126.                     int wStr = (int)(dataGridView1.Columns[e.ColumnIndex].HeaderText.Length * e.CellStyle.Font.SizeInPoints);
     127.                     int wCell = e.CellBounds.Width;
     128.                     int pLeft = (wCell - wStr) / 2;//相对CELL左边框的左坐标
     129.
     130.                     using (Brush foreBrush = new SolidBrush(e.CellStyle.ForeColor))
     131.                     {
     132.                         e.Graphics.DrawString(dataGridView1.Columns[e.ColumnIndex].HeaderText, e.CellStyle.Font, foreBrush, new PointF(e.CellBounds.X + pLeft, cTop + 3 + FatherColHeight));
     133.                     }                    
     134.                     #endregion
     135.                     e.Handled = true;
     136.                 }
     137.             }
     138.         }       
     139.     }
     140. }
      

  3.   


            public class exGridView
            {
                #region 合并列时使用到的位置和大小属性
                int cTop = 0;//被合并表头区域的顶部坐标
                int cLeft = 0;//被合并表头区域的左边坐标
                /// <summary>
                /// 被合并表头区域的宽
                /// </summary>
                int cWidth = 0;
                int cHeight = 0;//高
                #endregion
                /// <summary>
                /// 判断是否已经将datagridview的表头变高了，只增高一次。
                /// </summary>
                public static bool isEnLarged = false;            /// <summary>
                /// 合并表头,用在dataGridView的CellPainting事件中。
                /// </summary>
                /// <param name="sender">需要重绘的dataGridview</param>
                /// <param name="e">CellPainting中的参数</param>
                ///<param name="colName">列的集合(列必须是连续的，第一列放在最前面)</param>
                /// <param name="headerText">列合并后显示的文本</param>
                public void MergeHeader(object sender, DataGridViewCellPaintingEventArgs e, List<string> colNameCollection, string headerText)
                {
                    if (e.RowIndex == -1)
                    {
                        DataGridView dataGridView1 = sender as DataGridView;
                        string colName = dataGridView1.Columns[e.ColumnIndex].Name;
                        if (!isEnLarged)
                        {
                            //0.扩展表头高度为当前的2倍
                            dataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
                            dataGridView1.ColumnHeadersHeight = e.CellBounds.Height * 2;
                            isEnLarged = true;
                        }
                        if (colNameCollection.Contains(colName))
                        {
                            #region 重绘列头
                            //1.计算colLen个列的区域
                            if (colNameCollection.IndexOf(colName) == 0)
                            {
                                cTop = e.CellBounds.Top;
                                cLeft = e.CellBounds.Left;                            cWidth = e.CellBounds.Width;
                                cHeight = e.CellBounds.Height / 2;                            foreach (string colNameItem in colNameCollection)
                                {
                                    if (colNameItem.Equals(colName))
                                    {//除去自己一个，加了之后colLen-1个列的宽
                                        continue;
                                    }
                                    cWidth += dataGridView1.Columns[colNameItem].Width;
                                }
                            }                        Rectangle cArea = new Rectangle(cLeft, cTop, cWidth, cHeight);
                            //2.把区域设置为背景色，没有列的分线及任何文字。
                            using (Brush backColorBrush = new SolidBrush(e.CellStyle.BackColor))
                            {
                                e.Graphics.FillRectangle(backColorBrush, cArea);                        }
                            //3.绘制新列头的边框
                            using (Pen gridPen = new Pen(dataGridView1.GridColor))
                            {
                                //3.1 上部边框
                                e.Graphics.DrawLine(gridPen, cLeft, cTop, cLeft + cWidth, cTop);
                                using (Pen hilightPen = new Pen(Color.WhiteSmoke))
                                {
                                    //3.2 顶部高光
                                    e.Graphics.DrawLine(hilightPen, cLeft, cTop + 1, cLeft + cWidth, cTop + 1);
                                    //3.3 左部反光线
                                    e.Graphics.DrawLine(hilightPen, cLeft, cTop + 3, cLeft, cTop + cHeight - 2);
                                }
                                //3.4 下部边框
                                e.Graphics.DrawLine(gridPen, cLeft, cTop + cHeight - 1, cLeft + cWidth, cTop + cHeight - 1);
                                //3.5 右部边框                        
                                e.Graphics.DrawLine(gridPen, cLeft + cWidth - 1, cTop, cLeft + cWidth - 1, cTop + cHeight);//(cTop+cHeight)/2);
                            }
                            //4.写文本
                            if (colNameCollection.IndexOf(colName) == 0)
                            {//不是第一列则不写文字。
                                int wHeadStr = (int)(headerText.Length * e.CellStyle.Font.SizeInPoints);
                                int wHeadCell = cWidth;
                                int pHeadLeft = (wHeadCell - wHeadStr) / 2 - 6;
                                using (Brush foreBrush = new SolidBrush(e.CellStyle.ForeColor))
                                {
                                    e.Graphics.DrawString(headerText, e.CellStyle.Font, foreBrush, new PointF(cLeft + pHeadLeft, cTop + 3));
                                }
                            }
                            //5 绘制子列背景
                            int FatherColHeight = e.CellBounds.Height / 2;//上面一行的高度 
                            using (Brush backColorBrush = new SolidBrush(e.CellStyle.BackColor))
                            {
                                e.Graphics.FillRectangle(backColorBrush, new Rectangle(e.CellBounds.X, e.CellBounds.Y + FatherColHeight, e.CellBounds.Width - 1, e.CellBounds.Height / 2 - 1));
                            }
                            //5.1绘制子列的边框                   
                            using (Pen gridPen = new Pen(dataGridView1.GridColor))
                            {
                                using (Pen hilightPen = new Pen(Color.WhiteSmoke))
                                {
                                    //5.2 左部反光线
                                    e.Graphics.DrawLine(hilightPen, cLeft, cTop + 3 + FatherColHeight, cLeft, cTop + cHeight - 2 + FatherColHeight);
                                }
                                //5.3 下部边框
                                e.Graphics.DrawLine(gridPen, cLeft, cTop + cHeight - 1 + FatherColHeight, cLeft + cWidth, cTop + cHeight - 1 + FatherColHeight);                            //5.4 右部边框 
                                e.Graphics.DrawLine(gridPen, e.CellBounds.X + e.CellBounds.Width - 1, e.CellBounds.Top + FatherColHeight, e.CellBounds.X + e.CellBounds.Width - 1, e.CellBounds.Top + e.CellBounds.Height + FatherColHeight);//(cTop+cHeight)/2);                                            }
                            //5.5 写子列的文本
                            int wStr = (int)(dataGridView1.Columns[e.ColumnIndex].HeaderText.Length * e.CellStyle.Font.SizeInPoints);
                            int wCell = e.CellBounds.Width;
                            int pLeft = (wCell - wStr) / 2;//相对CELL左边框的左坐标                        using (Brush foreBrush = new SolidBrush(e.CellStyle.ForeColor))
                            {
                                e.Graphics.DrawString(dataGridView1.Columns[e.ColumnIndex].HeaderText, e.CellStyle.Font, foreBrush, new PointF(e.CellBounds.X + pLeft, cTop + 3 + FatherColHeight));
                            }
                            #endregion
                            e.Handled = true;
                        }
                    }
                }
            }