递归构建HTML

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如何递归构建HTML 看如下代码

 

protected string DoRecursiveHTML(DataSet ds, string nodeID) { DataView dv = ds.Tables[0].DefaultView; dv.RowFilter = " ParentID = '" + nodeID + "'"; if (dv.Count > 0) { //string retStr = "<ul>"; StringBuilder sb = new StringBuilder(); sb.Append("<ul>"); foreach (DataRowView row in dv) { //retStr = retStr + "<li><a href="/" mce_href="/""javascript:alert('"; //retStr = retStr + row["NodeID"].ToString(); //retStr = retStr + "')/">"; //retStr = retStr + row["NodeName"].ToString(); //retStr = retStr + "</a>"; //retStr = retStr + DoRecursiveHTML(ds, row["NodeID"].ToString()); //retStr = retStr + "</li>"; DataView dvChd = ds.Tables[0].DefaultView; dvChd.RowFilter = " ParentID = '" + row["NodeID"].ToString() + "'"; sb.AppendFormat("<li {2}><a href="/" mce_href="/""javascript:alert('{0}')/">{1}</a>{3}</li>", row["NodeID"].ToString(), row["NodeName"].ToString(), (dvChd.Count > 0 ? "class='open'" : ""), DoRecursiveHTML(ds, row["NodeID"].ToString())); } sb.Append("</ul>"); ; return sb.ToString(); } else { return ""; } } protected void Page_Load(object sender, EventArgs e) { DataSet ds = 你的数据方法(); Response.Write(DoRecursiveHTML(ds,"-1")); }