using System.Data;
using System.Text;
namespace WX.CRM.WebHelper
{
    public class DataTableHandler
    {
        /// <summary>
        /// 获取有分页的html表格(“HIDDEN_字段名”这种格式的字段不显示)
        /// </summary>
        /// <param name="tab">DataTable数据</param>
        /// <param name="PageSize">一页显示的数据</param>
        /// <returns></returns>
        public static string GetPageTableHtml(DataTable tab, int pageSize, int pageIndex, string css = "bordered")
        {
            StringBuilder html = new StringBuilder();

            if (tab == null)
                return html.ToString();
            html.AppendLine("<table class='" + css + "' style='width:100%;'>");
            //===============================================#头部#======================================================\\
            html.AppendLine("   <thead>");
            html.AppendLine("       <tr>");
            html.AppendLine("           <th>&nbsp;</th>");
            foreach (DataColumn column in tab.Columns)
            {
                if (column.ColumnName.IndexOf("HIDDEN_") == -1)
                    html.AppendLine(string.Format("           <th field='{0}'>{1}</th>", column.ColumnName, column.Caption));
            }

            html.AppendLine("       </tr>");
            html.AppendLine("</thead>");
            //===============================================#####=========================================================\\
            if (tab.Rows.Count == 0)
                return html.ToString();
            //===============================================#数据#======================================================\\
            html.AppendLine("   <tbody>");
            int startIndex = 0;
            int endIndex = pageSize;
            if (pageIndex > 1)
            {
                startIndex = pageSize * (pageIndex - 1);
                endIndex = pageSize * pageIndex;
            }
            if (endIndex > tab.Rows.Count)
                endIndex = tab.Rows.Count;
            for (int i = startIndex; i < endIndex; i++)
            {
                html.AppendLine("       <tr>");
                html.AppendLine(string.Format("           <td>{0}</td>", i + 1));
                for (int x = 0; x < tab.Columns.Count; x++)
                {
                    if (tab.Columns[x].ColumnName.IndexOf("HIDDEN_") == -1)
                        html.AppendLine(string.Format("           <td>{0}</td>", tab.Rows[i][x]));
                }
                //foreach (var obj in tab.Rows[i].ItemArray)
                //{
                //    html.AppendLine(string.Format("           <td>{0}</td>", obj));
                //}
                html.AppendLine("       </tr>");
            }
            html.AppendLine("   </tbody>");
            //===============================================#####======================================================\\
            //===============================================尾部=======================================================\\
            html.AppendLine("   <tfoot>");
            html.AppendLine("       <tr class='tr_pagenumber'>");
            html.AppendLine("<td colspan='" + (tab.Columns.Count + 1) + "'>" + PageHelper.GetPage(tab.Rows.Count, pageIndex, pageSize, "LoadData") + "</td>");
            html.AppendLine("       </tr>");
            html.AppendLine("   </tfoot>");

            html.AppendLine("</table>");

            return html.ToString();

        }
        //public static string GetPageTableHtml(DataTable tab, int PageSize, int PageIndex,string pagination) 
        //{
        //    string str = string.Empty;
        //    Pager pager = new Pager() { page = PageIndex, rows = PageSize };
        //    string tableId = "tablist";
        //    Table table = new Table(tableId);
        //    table.gridPager = pager;
        //    //添加表头
        //    foreach (DataColumn column in tab.Columns)
        //    {
        //        table.AddHeadCol(column.ColumnName, "", column.Caption);
        //    }
        //    table.AddHeadRow();
        //    //添加数据行
        //    for (int i = 0; i < tab.Rows.Count; i++)
        //    {
        //        foreach (var obj in tab.Rows[i].ItemArray)
        //        {
        //            table.AddCol(obj);
        //        }
        //        table.AddRow();
        //    }
        //    return table.GetTable() + Pagination.GetPage(pager, tableId, pagination);
        //}

    }
}