GridView添加表头表尾以及合并相同项

今天又在研究GridView想实现合并相同单元格

后来就找了点网上例子，搜gridview通用大全，或者gridview使用大全都可以搜到

我主要用看的这个人例子http://www.cnblogs.com/huangjianhuakarl/

稍加改动，实现了自己功能，好了可以看源代码了

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
/// <summary>
/// Author:原作者匆匆  Blog:http://www.cnblogs.com/huangjianhuakarl/ 改动xy
/// </summary>
public partial class 表头表尾_GridviewDelSameCell : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bind();
        }
    }
    /// <summary>
    /// 绑定数据
    /// </summary>
    public void bind()
    {
        string sqlStr = "select * from Employee";
        DataSet myds = Common.dataSet(sqlStr);
        GridView1.DataSource = myds;
        GridView1.DataKeyNames = new string[] { "ID" };
        GridView1.DataBind();
        gvRender();
    }
    /// <summary>
    /// 在 GridView 控件中创建新行时发生，此事件通常用于在创建某个行时修改该行的布局或外观
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        switch (e.Row.RowType)
        {
            //判断是否表头
            case DataControlRowType.Header:
                //第一行表头
                TableCellCollection tcHeader = e.Row.Cells;
                tcHeader.Clear();

                tcHeader.Add(new TableHeaderCell());
                tcHeader[0].Attributes.Add("rowspan", "2");
                tcHeader[0].Attributes.Add("bgcolor", "Azure");
                tcHeader[0].Text = "编号";

                tcHeader.Add(new TableHeaderCell());
                tcHeader[1].Attributes.Add("colspan", "6");
                tcHeader[1].Attributes.Add("bgcolor", "Azure");
                tcHeader[1].Text = "基  本  信  息";

                tcHeader.Add(new TableHeaderCell());
                tcHeader[2].Attributes.Add("bgcolor", "Azure");
                tcHeader[2].Text = "福利</th></tr><tr>";

                //第二行表头
                tcHeader.Add(new TableHeaderCell());
                tcHeader[3].Attributes.Add("bgcolor", "Azure");
                tcHeader[3].Text = "账号";
                tcHeader.Add(new TableHeaderCell());
                tcHeader[4].Attributes.Add("bgcolor", "Azure");
                tcHeader[4].Text = "姓名";
                tcHeader.Add(new TableHeaderCell());
                tcHeader[5].Attributes.Add("bgcolor", "Azure");
                tcHeader[5].Text = "性别";
                tcHeader.Add(new TableHeaderCell());
                tcHeader[6].Attributes.Add("bgcolor", "Azure");
                tcHeader[6].Text = "住址";
                tcHeader.Add(new TableHeaderCell());
                tcHeader[7].Attributes.Add("bgcolor", "Azure");
                tcHeader[7].Text = "邮编";
                tcHeader.Add(new TableHeaderCell());
                tcHeader[8].Attributes.Add("bgcolor", "Azure");
                tcHeader[8].Text = "生日";
                tcHeader.Add(new TableHeaderCell());
                tcHeader[9].Attributes.Add("bgcolor", "Azure");
                tcHeader[9].Text = "月薪";
                break;
        }
    }
    /// <summary>
    /// 在 GridView 控件中的某个行被绑定到一个数据记录时发生。此事件通常用于在某个行被绑定到数据时修改该行的内容。
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        foreach (TableCell tc in e.Row.Cells)
        {
            tc.Attributes["style"] = "border-color:Black";
        }
        if (e.Row.RowIndex != -1)
        {
            int id = GridView1.PageIndex * GridView1.PageSize + e.Row.RowIndex + 1;
            e.Row.Cells[0].Text = id.ToString();
        }
    }
    /// <summary>
    /// 合并一列中的相同项
    /// </summary>
    private void gvRender()
    {
        if (GridView1.Rows.Count <= 1)
        {
            return;
        }
        for (int i = 0; i < GridView1.Columns.Count; i++)
        {
            TableCell oldtc = GridView1.Rows[0].Cells[i];
            for (int j = 1; j < GridView1.Rows.Count; j++)
            {
                TableCell newtc = GridView1.Rows[j].Cells[i];
                //如果相等合并，否则替换比较对象
                if (newtc.Text == oldtc.Text)
                {
                    newtc.Visible = false;

                    if (oldtc.RowSpan == 0)
                    {
                        oldtc.RowSpan = 1;
                        oldtc.RowSpan = oldtc.RowSpan + 1;
                        oldtc.VerticalAlign = VerticalAlign.Middle;
                    }
                    else
                    {
                        oldtc.RowSpan = oldtc.RowSpan + 1;
                        oldtc.VerticalAlign = VerticalAlign.Middle;
                    }
                    
                }
                else
                {
                    oldtc = newtc;
                }
            }
        }
    }
}

原表：

运行结果