linq 查询结果转换成DataTable 方法

转换方法代码：

 private DataTable ConvertToTable(IQueryable query)
        {
            DataTable dtList = new DataTable();
            bool isAdd = false;
            PropertyInfo[] objProterties = null;
            foreach (var item in query)
            {
                if (!isAdd)
                {
                    objProterties = item.GetType().GetProperties();
                    foreach (var itemProterty in objProterties)
                    {
                        Type type = null;
                        if (itemProterty.PropertyType != typeof(string) && itemProterty.PropertyType != typeof(int) && itemProterty.PropertyType != typeof(DateTime))
                        {
                            type = typeof(string);
                        }
                        else
                        {
                            type = itemProterty.PropertyType;
                        }
                        dtList.Columns.Add(itemProterty.Name, type);
                    }
                    isAdd = true;
                }
                var row = dtList.NewRow();
                foreach (var pi in objProterties)
                {
                    row[pi.Name] = pi.GetValue(item, null);
                }
                dtList.Rows.Add(row);
            }

            return dtList;
        }