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  • GridView和DataGrid相同列合并

    (一)普通列

        /// <summary>
        /// Gridview列的合并(普通列,不包含模板列)
        /// 注意:1.GridView在绑定的时候进行分组和排序,才能让相同的行放在一起
        ///       2.方法应用的时机,应该在Gridview的DataBound事件中使用
        /// </summary>
        /// <param name="gv">需要合并的GridView对象</param>
        /// <param name="columnIndex">所要合并列的索引</param>
        public static void UnitCell(GridView gv, int columnIndex)
        {
            int i = 0;                  //当前行数
            string lastType = string.Empty;        //当前判断是否合并行对应列的值
            int lastCell = 0;           //判断最后一个相同值的行的索引
            if (gv.Rows.Count > 0)
            {
                lastType = gv.Rows[0].Cells[columnIndex].Text.ToString();
                gv.Rows[0].Cells[columnIndex].RowSpan = 1;
                lastCell = 0;
            }
            for (i = 1; i < gv.Rows.Count; i++)
            {
                if (gv.Rows[i].Cells[columnIndex].Text == lastType)
                {
                    gv.Rows[i].Cells[columnIndex].Visible = false;
                    gv.Rows[lastCell].Cells[columnIndex].RowSpan++;
                }
                else
                {
                    lastType = gv.Rows[i].Cells[columnIndex].Text.ToString();
                    lastCell = i;
                    gv.Rows[i].Cells[columnIndex].RowSpan = 1;
                }
            }
        }
    
    
        /// <summary>
        /// DataGrid列的合并(普通列,不包含模板列)
        /// 注意:1.DataGrid在绑定的时候进行分组和排序,才能让相同的行放在一起
        ///       2.方法应用的时机,应该在DataGrid的DataBound事件中使用
        /// </summary>
        /// <param name="dg">需要合并的DataGrid对象</param>
        /// <param name="columnIndex">所要合并列的索引</param>
        public static void UnitCell_T(DataGrid dg, int columnIndex)
        {
            int i = 0;                  //当前行数
            string lastType = string.Empty;        //当前判断是否合并行对应列的值
            int lastCell = 0;           //判断最后一个相同值的行的索引
            if (dg.Items.Count> 0)
            {
                lastType = dg.Items[0].Cells[columnIndex].Text.ToString();
                dg.Items[0].Cells[columnIndex].RowSpan = 1;
                lastCell = 0;
            }
            for (i = 1; i < dg.Items.Count; i++)
            {
                if (dg.Items[i].Cells[columnIndex].Text == lastType)
                {
                    dg.Items[i].Cells[columnIndex].Visible = false;
                    dg.Items[lastCell].Cells[columnIndex].RowSpan++;
                }
                else
                {
                    lastType = dg.Items[i].Cells[columnIndex].Text.ToString();
                    lastCell = i;
                    dg.Items[i].Cells[columnIndex].RowSpan = 1;
                }
            }
        }

    (二)模板列

     /// <summary>
        /// Gridview列的合并(模板列)
        /// </summary>
        /// <param name="gv">需要合并的GridView对象</param>
        /// <param name="columnIndex">所要合并列的索引</param>
        /// <param name="lblName">模板列对象的ID</param>
        public static void UnitCell(GridView gv, int columnIndex, string lblName)
        {
            int i = 0;                  //当前行数
            string lastType = string.Empty;        //当前判断是否合并行对应列的值
            int lastCell = 0;           //判断最后一个相同值的行的索引
            if (gv.Rows.Count > 0)
            {
                lastType = (gv.Rows[0].Cells[columnIndex].FindControl(lblName) as Label).Text;
                gv.Rows[0].Cells[columnIndex].RowSpan = 1;
                lastCell = 0;
            }
            for (i = 1; i < gv.Rows.Count; i++)
            {
                if ((gv.Rows[i].Cells[columnIndex].FindControl(lblName) as Label).Text == lastType)
                {
                    gv.Rows[i].Cells[columnIndex].Visible = false;
                    gv.Rows[lastCell].Cells[columnIndex].RowSpan++;
                }
                else
                {
                    lastType = (gv.Rows[i].Cells[columnIndex].FindControl(lblName) as Label).Text.ToString();
                    lastCell = i;
                    gv.Rows[i].Cells[columnIndex].RowSpan = 1;
                }
            }
        }

    (三)在DataBound事件中调用即可。

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  • 原文地址:https://www.cnblogs.com/52net/p/2727847.html
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