repeater 递归

网上关于repeater 递归的代码很少，今天正好要实现这功能，代码有点不规范，也没优化，只是一个效果，贴出来，给大家做个参考

先看效果图：

 

 

界面代码

<asp:Repeater ID="Repeater1" runat="server">
    <HeaderTemplate>
      <table border="0" align="center" cellpadding="3" cellspacing="1" class="table_b">
        <tr>
          <td width="30" class="title_bg">ID</td>
          <td class="title_bg">名称</td>
          <td class="title_bg">排序</td>
          <td class="title_bg">管理</td>
        </tr>
    </HeaderTemplate>
    <ItemTemplate>
        <%#((DataRowView)Container.DataItem)["Colum"]%> 
    </ItemTemplate>
      <FooterTemplate>
        </table>
      </FooterTemplate>
    </asp:Repeater> 



后台代码



public void ListControl_Bind(int n)
    {
        Cy.BLL.Class bll_Class = new Cy.BLL.Class();
        DataTable dt = bll_Class.GetList("followid=0").Tables[0];
        dt.Columns.Add("Operate", typeof(string));//操作
        dt.Columns.Add("Colum", typeof(String));//在dt中增加字段名为Colum的列
        if (dt.Rows.Count > 0)
        {
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                DataRow dr = dt.Rows[i];
                string strchar = "";
                dr["operate"] = "<a href='" + dr["id"].ToString() + "'>添加下级分类</a>　<a href=''>编辑</a>　<a href='' onclick='return confirm(\"真的要删除?不可恢复!\");'>删除</a>　<a href='?action=sc&&classid =" + dr["id"].ToString() + " '>生成</a>";
                strchar += "<tr  onmouseover=this.bgColor='#EBFFDC'; onmouseout=this.bgColor='#ffffff';  bgcolor='#ffffff'>";
                strchar += "<td align=\"center\">" + dr["id"].ToString() + "</td> ";
                strchar += "<td align=\"left\" >" + dr["title"].ToString() + "</td>";
                strchar += "<td align=\"center\" height=\"25\">上升 下降</td>";
                strchar += "<td align=\"center\" >" + dr["Operate"].ToString() + "</td>";
                strchar += "</tr>";
                Cy.BLL.Class bll_Classq = new Cy.BLL.Class();
                strchar = InitChild(dr, strchar, bll_Classq, 2);
                dr["Colum"] = strchar;
            }
        }
        Repeater1.DataSource = dt;
        Repeater1.DataBind();
    }

    private  string InitChild(DataRow dr, string strchar, Cy.BLL.Class bll_Classq,int n)
    {
        DataTable dtt = bll_Classq.GetList("followid='" + dr["id"] + "'").Tables[0];
        dtt.Columns.Add("Operate", typeof(string));
        dtt.Columns.Add("Colum", typeof(String));
        if (dtt.Rows.Count > 0)
        {
            string s = "&nbsp;";
            for (int j = 1; j <= n; j++)
            {
                s += "&nbsp;";
            }
            for (int k = 0; k < dtt.Rows.Count; k++)
            {
                DataRow dro = dtt.Rows[k];
                string flag = "├";
                if (dtt.Rows.Count == 1)
                {
                    flag = "├";
                }
                else
                {
                    if (k == 0)
                    {
                        flag = "┌";
                    }
                    if (k == dtt.Rows.Count - 1)
                    {
                        flag = "└";
                    }
                }
                dro["operate"] = "<a href='" + dro["id"].ToString() + "'>添加下级分类</a>　<a href=''>编辑</a>　<a href='' onclick='return confirm(\"真的要删除?不可恢复!\");'>删除</a>　<a href='?action=sc&&classid =" + dro["id"].ToString() + " '>生成</a>";
                strchar += "<tr  onmouseover=this.bgColor='#EBFFDC'; onmouseout=this.bgColor='#ffffff';  bgcolor='#ffffff'>";
                strchar += "<td align=\"center\">" + dro["id"].ToString() + "</td> ";
                strchar += "<td align=\"left\" >" + s + flag + dro["title"].ToString() + "</td>";
                strchar += "<td align=\"center\" height=\"25\">上升 下降</td>";
                strchar += "<td align=\"center\" >" + dro["Operate"].ToString() + "</td>";
                strchar += "</tr>";
                strchar = InitChild(dro, strchar, bll_Classq, n + 8);
            }

        }
        return strchar;
    }