using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI.WebControls;
using System.Web.UI;
namespace YYControls.Helper
{
/**//// <summary>
/// SmartGridView的Helper
/// </summary>
    public class SmartGridView
{
/**//// <summary>
/// 合并指定列的相邻且内容相同的单元格
/// </summary>
/// <param name="gv">GridView</param>
/// <param name="columnIndices">需要合并单元格的列的索引（用逗号“,”分隔）</param>
        public static void MergeCells(GridView gv, int[] columnIndices)
{
// 指定的列中需要设置RowSpan的单元格的行索引
            int[] aryInt = new int[columnIndices.Length];
// 是否重新指定aryInt的相关元素的值
// aryInt中的元素与aryBln中的元素一一对应
            bool[] aryBln = new bool[columnIndices.Length];
// aryInt初值均为0
            for (int i = 0; i < aryInt.Length; i++)
{
aryInt[i] = 0;
}
// aryBln初值均为true
            for (int i = 0; i < aryBln.Length; i++)
{
aryBln[i] = true;
}
for (int i = 1; i < gv.Rows.Count; i++)
{
// 本行和上一行均为DataControlRowType.DataRow
                if (gv.Rows[i].RowType == DataControlRowType.DataRow && gv.Rows[i - 1].RowType == DataControlRowType.DataRow)
{
// 遍历指定的列索引
                    for (int j = 0; j < columnIndices.Length; j++)
{
// 列索引超出范围则不处理
                        if (columnIndices[j] < 0 || columnIndices[j] > gv.Columns.Count - 1) continue;
// 相邻单元格的内容相同
                        if (gv.Rows[i].Cells[columnIndices[j]].Text == gv.Rows[i - 1].Cells[columnIndices[j]].Text)
{
if (aryBln[j])
aryInt[j] = i - 1;
if (gv.Rows[aryInt[j]].Cells[columnIndices[j]].RowSpan == 0)
gv.Rows[aryInt[j]].Cells[columnIndices[j]].RowSpan = 1;
gv.Rows[aryInt[j]].Cells[columnIndices[j]].RowSpan++;
gv.Rows[i].Cells[columnIndices[j]].Visible = false;
aryBln[j] = false;
}
else
{
aryBln[j] = true;
}
}
}
}
}
}
}