Repeater控件合并相同信息行及设定行背景颜色“类”

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace xxxx
{
    public class RepeaterSetting
    {
        /// <summary>
        /// 合并Repeater中某行相同信息的行（单元格）
        /// </summary>
        /// <param name="repeater">Repeater对象</param>
        /// <param name="cellID">某个单元格ID</param>
        public static void GroupRow(Repeater repeater, string cellID)
        {
            int count = repeater.Items.Count;
            for (int i = count - 1; i > 0; i--)
            {
                RepeaterItem rpTprevious = repeater.Items[i - 1];
                RepeaterItem rpT = repeater.Items[i];

                MergeCells(rpTprevious, rpT, cellID, cellID);
            }
        }

        /// <summary>
        /// 合并Repeater中某行相同信息的行（单元格）
        /// </summary>
        /// <param name="repeater">Repeater对象</param>
        /// <param name="cellIDs">某些单元格ID</param>
        public static void GroupRow(Repeater repeater, params string[] cellIDs)
        {
            int count = repeater.Items.Count;
            for (int i = count - 1; i > 0; i--)
            {
                RepeaterItem rpTprevious = repeater.Items[i - 1];
                RepeaterItem rpT = repeater.Items[i];

                for (int j = 0; j < cellIDs.Length; j++)
                {
                    MergeCells(rpTprevious, rpT, cellIDs[j], cellIDs[0]);
                }              
            }
        }

        /// <summary>
        /// 设置Repeater行背景的间隔颜色
        /// </summary>
        /// <param name="repeater">Repeater对象</param>       
        /// <param name="firRowID">第一行ID</param>
        /// <param name="secRowID">第二行ID</param>
        public static void SetBackgroundColor(Repeater repeater,  string firRowID, string secRowID)
        {
            int count = repeater.Items.Count;
            int i = 0;
            while (i < count)
            {
                HtmlTableRow htmRow = repeater.Items[i].FindControl(firRowID) as HtmlTableRow;
                HtmlTableRow htmRow2 = repeater.Items[i].FindControl(secRowID) as HtmlTableRow;

                if (htmRow != null)
                {
                    htmRow.Style.Add("background-color", "#B5F7C0");                  
                }

                if (htmRow2 != null)
                {
                    htmRow2.Style.Add("background-color", "#B5F7C0");
                }

                i++;
                if (i < count)
                {
                    htmRow = repeater.Items[i].FindControl(firRowID) as HtmlTableRow;
                    htmRow2 = repeater.Items[i].FindControl(secRowID) as HtmlTableRow;

                    if (htmRow != null)
                    {
                        htmRow.Style.Add("background-color", "");                      
                    }
                    if (htmRow2 != null)
                    {                        
                        htmRow2.Style.Add("background-color", "");
                    }
                    i++;
                }
            }
        }

        /// <summary>
        /// 设置Repeater行背景的间隔颜色
        /// </summary>
        /// <param name="repeater">Repeater对象</param>       
        /// <param name="firRowID">第一行ID</param>
        /// <param name="secRowID">第二行ID</param>
        public static void SetBackgroundColorByRow(Repeater repeater, string firRowID, string secRowID,string thiRowID)
        {
            int count = repeater.Items.Count;
            int i = 0;
            while (i < count)
            {
                HtmlTableRow htmRow = repeater.Items[i].FindControl(firRowID) as HtmlTableRow;
                HtmlTableRow htmRow2 = repeater.Items[i].FindControl(secRowID) as HtmlTableRow;
                HtmlTableRow htmRow3 = repeater.Items[i].FindControl(thiRowID) as HtmlTableRow;

                if (htmRow != null && htmRow2 != null)
                {
                    htmRow.Style.Add("background-color", "#B5F7C0");
                    htmRow2.Style.Add("background-color", "#B5F7C0");
                    htmRow3.Style.Add("background-color", "#B5F7C0");
                }

                i++;
                if (i < count)
                {
                    htmRow = repeater.Items[i].FindControl(firRowID) as HtmlTableRow;
                    htmRow2 = repeater.Items[i].FindControl(secRowID) as HtmlTableRow;
                    htmRow3 = repeater.Items[i].FindControl(secRowID) as HtmlTableRow;

                    if (htmRow != null && htmRow2 != null)
                    {
                        htmRow.Style.Add("background-color", "");
                        htmRow2.Style.Add("background-color", "");
                        htmRow3.Style.Add("background-color", "");
                    }
                    i++;
                }
            }
        }

        /// <summary>
        /// 设置Repeater行背景的间隔颜色
        /// </summary>
        /// <param name="repeater">Repeater对象</param>
        /// <param name="mergeCellID">合并单元格ID</param>
        /// <param name="firRowID">第一行ID</param>
        /// <param name="secRowID">第二行ID</param>
        public static void SetBackgroundColor(Repeater repeater, string mergeCellID, string firRowID, string secRowID)
        {
            int count = repeater.Items.Count;
            int i = 0;
            while (i < count)
            {
                HtmlTableCell tc = repeater.Items[i].FindControl(mergeCellID) as HtmlTableCell;

                if (tc.Visible)
                {
                    int start = tc.RowSpan / 2 + i;

                    for (int j = i; j < start; j++)
                    {
                        HtmlTableRow htmRow = repeater.Items[j].FindControl(firRowID) as HtmlTableRow;
                        HtmlTableRow htmRow2 = repeater.Items[j].FindControl(secRowID) as HtmlTableRow;

                        if (htmRow != null && htmRow2 != null)
                        {
                            htmRow.Style.Add("background-color", "#B5F7C0");
                            htmRow2.Style.Add("background-color", "#B5F7C0");
                        }                     
                    }
                    i = start;
                }
                else
                {
                    i++;
                }

                if (i < count)
                {
                    tc = repeater.Items[i].FindControl(mergeCellID) as HtmlTableCell;
                    if (tc.Visible)
                    {
                        int start = tc.RowSpan / 2 + i;

                        for (int j = i; j < start; j++)
                        {
                            HtmlTableRow htmRow = repeater.Items[j].FindControl(firRowID) as HtmlTableRow;
                            HtmlTableRow htmRow2 = repeater.Items[j].FindControl(secRowID) as HtmlTableRow;

                            if (htmRow != null && htmRow2 != null)
                            {
                                htmRow.Style.Add("background-color", "");
                                htmRow2.Style.Add("background-color", "");
                            }                          
                        }
                        i = start;
                    }
                    else
                    {
                        i++;
                    }
                }
            }
        }

        private static void MergeCells(RepeaterItem rpTprevious, RepeaterItem rpT, string cellID, string keyCellID)
        {
            HtmlTableCell oCell_previous = rpTprevious.FindControl(cellID) as HtmlTableCell;
            HtmlTableCell oCell = rpT.FindControl(cellID) as HtmlTableCell;
            if (oCell_previous != null && oCell != null)
            {
                oCell.RowSpan = (oCell.RowSpan == -1) ? 1 : oCell.RowSpan;
                oCell_previous.RowSpan = (oCell_previous.RowSpan == -1) ? 1 : oCell_previous.RowSpan;

                if (oCell.Controls.Count > 1 && oCell_previous.Controls.Count > 1)
                {
                    bool needMerge = false;
                    if (oCell.Controls[1] is LinkButton)
                    {
                        LinkButton licPre = oCell.Controls[1] as LinkButton;
                        LinkButton lic = oCell_previous.Controls[1] as LinkButton;
                        if (licPre != null && lic != null && lic.Text.Trim() == licPre.Text.Trim())
                        {
                            needMerge = true;
                        }
                    }
                    else if (oCell.Controls[1] is Label)
                    {
                        Label licPre = oCell.Controls[1] as Label;
                        Label lic = oCell_previous.Controls[1] as Label;
                        if (licPre != null && lic != null && lic.Text.Trim() == licPre.Text.Trim())
                        {
                            needMerge = true;
                        }
                    }

                    if (needMerge)
                    {
                        if (HasMerge(rpTprevious, rpT, cellID, keyCellID))
                        {
                            return;
                        }

                        oCell.Visible = false;
                        oCell_previous.RowSpan += oCell.RowSpan;
                    }                  
                }
                else if (oCell.InnerText == oCell_previous.InnerText)
                {                   
                    if (HasMerge(rpTprevious, rpT, cellID, keyCellID))
                    {
                        return;
                    }

                    oCell.Visible = false;
                    oCell_previous.RowSpan += oCell.RowSpan;
                }
            }
        }

        private static bool HasMerge(RepeaterItem rpTprevious, RepeaterItem rpT, string cellID, string keyCellID)
        {
            if (cellID != keyCellID)
            {
                HtmlTableCell keyCellPrev = rpTprevious.FindControl(keyCellID) as HtmlTableCell;
                HtmlTableCell keyCell = rpT.FindControl(keyCellID) as HtmlTableCell;

                if (keyCellPrev != null && keyCell != null)
                {
                    if (keyCellPrev.Controls.Count > 1 && keyCell.Controls.Count > 1)
                    {                        
                        if (keyCell.Controls[1] is LinkButton)
                        {
                            LinkButton licPre = keyCell.Controls[1] as LinkButton;
                            LinkButton lic = keyCellPrev.Controls[1] as LinkButton;
                            if (licPre != null && lic != null && lic.Text.Trim() != licPre.Text.Trim())
                            {
                                return true;
                            }
                        }
                        else if (keyCell.Controls[1] is Label)
                        {
                            Label licPre = keyCell.Controls[1] as Label;
                            Label lic = keyCellPrev.Controls[1] as Label;
                            if (licPre != null && lic != null && lic.Text.Trim() != licPre.Text.Trim())
                            {
                                return true;
                            }
                        }                      
                    }
                    else if (keyCellPrev.InnerText.Trim() != keyCell.InnerText.Trim())
                    {
                        return true;
                    }                  
                }
            }
            return false;
        }
    }
}

引用实例：

this.rpt_request.DataSource = ds.Tables[0];
this.rpt_request.DataBind();
RepeaterSetting.SetBackgroundColor(rpt_request, "Td2", "row1", "row2"); 

另一种方式：

private void SetRepeaterProperties()
        {
            foreach (RepeaterItem item in rpt_request.Items)
            {
                HtmlTableCell maxNum = item.FindControl("MaxNumCol") as HtmlTableCell;
                HtmlTableCell enrolmentNum = item.FindControl("EnrolmentNumCol") as HtmlTableCell;
                if (maxNum != null && enrolmentNum != null)
                {
                    HtmlTableRow htmRow = item.FindControl("row1") as HtmlTableRow;
                    HtmlTableRow htmRow2 = item.FindControl("row2") as HtmlTableRow;

                    int maxNum_value =Convert.ToInt32(maxNum.InnerText.Trim());
                    int enrolmentNum_value =Convert.ToInt32(enrolmentNum.InnerText.Trim());

                    if (enrolmentNum_value >= maxNum_value)
                    {
                        if (htmRow != null && htmRow2 != null)
                        {
                            htmRow.Style.Add("background-color", "Red");
                            htmRow2.Style.Add("background-color", "Red");
                        }
                    }

                    if (enrolmentNum_value == 0)
                    {
                        if (htmRow != null && htmRow2 != null)
                        {
                            htmRow.Style.Add("background-color", "Yellow");
                            htmRow2.Style.Add("background-color", "Yellow");
                        }
                    }

                }
                
            }
        }