关于动态绑定树后运行报错的解决方法

Question

using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using OAModels;
using OABLL;public partial class admin_ShowUser : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindTreeView();
        }
    }
//用于动态绑定树的方法
    private void BindTreeView()
    {
        IList<BranchInfo> branchInfo = BranchInfoManager.GetALLBranchInfo();
        foreach (BranchInfo bi in branchInfo)
        {
            TreeNode fatherNodes = new TreeNode();
            fatherNodes.Text = bi.BranchName;
            fatherNodes.Value = null;
            fatherNodes.ImageUrl = "images/menuclose.gif";            //向树加根节点
            this.TreeView1.Nodes.Add(fatherNodes);
            ////NEW支节点实例
            IList<DepartInfo> depaertInfoChild = TreeNodeManager.GetDepartInfoChildNodesBySql(bi.BranchId);            foreach (DepartInfo diChild in depaertInfoChild.DepartInfo)
            {
................
运行报错为IList<OAModels.BranchInfo>不包含"GetEnumerator"的公共定义因此foreach语句不能作用于IList<OAModels.BranchInfo>类型变量
          IList<OAModels.DepartInfo>不包含不包含"GetEnumerator"的公共定义因此foreach语句不能作用于IList<OAModels.DepartInfo>类型变量
我该怎么改，谢谢，问题解决立刻结贴，望指教
        

Answer 1

把泛型集合转换为DataTable再使用 #region 泛型集合转换为DataTable
    /// <summary>
    ///  Ilist<T> 转换成 DataTable
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="i_objlist"></param>
    /// <returns></returns>
    public static DataTable ConvertToDataTable<T>(IList<T> i_objlist)
    {
        if (i_objlist == null || i_objlist.Count <= 0)
        {
            return null;
        }
        DataTable dt = new DataTable(typeof(T).Name);
        DataColumn column;
        DataRow row;        System.Reflection.PropertyInfo[] myPropertyInfo = typeof(T).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);        foreach (T t in i_objlist)
        {
            if (t == null)
            {
                continue;
            }            row = dt.NewRow();            for (int i = 0, j = myPropertyInfo.Length; i < j; i++)
            {
                System.Reflection.PropertyInfo pi = myPropertyInfo[i];                string name = pi.Name;                if (dt.Columns[name] == null)
                {
                    column = new DataColumn(name, pi.PropertyType);
                    dt.Columns.Add(column);
                }                row[name] = pi.GetValue(t, null);
            }            dt.Rows.Add(row);
        }
        return dt;
    }
    #endregion