以下内容均是从网上节选抄袭而来，汇总到一起而已
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Web.UI.WebControls;
/// <summary>
///GridView和并列
/// </summary>
public class GridViewMerge
{
public GridViewMerge()
{
}
#region GridView中的所有相同的数据列全部合并
public static void GroupRow(GridView gridView)
{
for (int rowIndex = gridView.Rows.Count - 2; rowIndex >= 0; rowIndex--)
{
GridViewRow row = gridView.Rows[rowIndex];
GridViewRow previousRow = gridView.Rows[rowIndex + 1];
for (int i = 0; i < row.Cells.Count; i++)
{
if (row.Cells[i].Text == previousRow.Cells[i].Text)
{
row.Cells[i].RowSpan = previousRow.Cells[i].RowSpan < 2 ? 2 :
previousRow.Cells[i].RowSpan + 1;
previousRow.Cells[i].Visible = false;
}
}
}
}
/// <summary>
/// GridView 所指定Row中相同的数据列合并
/// </summary>
/// <param name="GridView1">GridView对象</param>
/// <param name="cellNum">要指定的Row</param>
public static void GroupRow(GridView gridView, int rows)
{
TableCell oldTc = gridView.Rows[rows].Cells[0];
for (int i = 1; i < gridView.Rows[rows].Cells.Count; i++)
{
TableCell tc = gridView.Rows[rows].Cells[i]; //Cells[0]就是你要合并的列
if (oldTc.Text == tc.Text)
{
tc.Visible = false;
if (oldTc.ColumnSpan == 0)
{
oldTc.ColumnSpan = 1;
}
oldTc.ColumnSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
else
{
oldTc = tc;
}
}
}
#endregion
#region 合并单元格 合并一行中的多列
/// <summary>
/// 合并单元格 合并一行中的多列
/// </summary>
/// <param name="GridView1">GridView ID</param>
/// <param name="rows">行</param>
/// <param name="sCol">开始列</param>
/// <param name="eCol">结束列</param>
public static void GroupRow(GridView gridView, int rows, int sCol, int eCol)
{
TableCell oldTc = gridView.Rows[rows].Cells[sCol];
for (int i = 1; i < eCol - sCol; i++)
{
TableCell tc = gridView.Rows[rows].Cells[i + sCol]; //Cells[0]就是你要合并的列
tc.Visible = false;
if (oldTc.ColumnSpan == 0)
{
oldTc.ColumnSpan = 1;
}
oldTc.ColumnSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
}
#endregion
#region 合并单元格 合并某一列所有行
/// <summary>
/// 合并GridView中某列相同信息的行（单元格）
/// </summary>
/// <param name="GridView1"></param>
/// <param name="cellNum"></param>
public static void GroupCol(GridView gridView, int cols)
{
if (gridView.Rows.Count < 1 || cols > gridView.Rows[0].Cells.Count - 1)
{
return;
}
TableCell oldTc = gridView.Rows[0].Cells[cols];
for (int i = 1; i < gridView.Rows.Count; i++)
{
TableCell tc = gridView.Rows[i].Cells[cols];
if (oldTc.Text == tc.Text)
{
tc.Visible = false;
if (oldTc.RowSpan == 0)
{
oldTc.RowSpan = 1;
}
oldTc.RowSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
else
{
oldTc = tc;
}
}
}
#endregion
#region 合并单元格 合并某一列中的某些行
/// <summary>
/// 合并单元格 合并某一列中的某些行
/// </summary>
/// <param name="GridView1">GridView ID</param>
/// <param name="cellNum">列</param>
/// <param name="sRow">开始行</param>
/// <param name="eRow">结束列</param>
public static void GroupCol(GridView gridView, int cols, int sRow, int eRow)
{
if (gridView.Rows.Count < 1 || cols > gridView.Columns.Count - 1)
{
return;
}
TableCell oldTc = gridView.Rows[sRow].Cells[cols];
for (int i = 1; i < eRow - sRow; i++)
{
TableCell tc = gridView.Rows[sRow + i].Cells[cols];
tc.Visible = false;
if (oldTc.RowSpan == 0)
{
oldTc.RowSpan = 1;
}
oldTc.RowSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
}
#endregion
}