一个简单的GridViewHandler类

自己在工作中写的一个GridViewHandler类，封装了创建多行表头和生成邮件文本的功能，希望大家以后有用，附代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.IO;
using System.Collections;
namespace Wjs
{
    public class GridViewHandler
    {

 

        #region -- 多行表头 --

 

        /// <summary>
        ///
        /// </summary>
        /// <param name="text">标题文本</param>
        /// <param name="rowSpan">跨行数</param>
        /// <param name="colSpan">跨列数</param>
        /// <param name="isRowTail">是否是换行单元格（前一行的行尾）</param>
        /// <returns></returns>
   
        protected TableHeaderCell DefineTableHeaderCell(string text, int rowSpan, int colSpan, bool isRowTail)
        {
            TableHeaderCell cell = new TableHeaderCell();

 

            cell.Text = isRowTail ? text + "</th></tr><tr>" : text;
            cell.Attributes.Add("rowspan", rowSpan.ToString());
            cell.Attributes.Add("colspan", colSpan.ToString());
            cell.Attributes.Add("style", "font-size:10pt;font-weight:bold");
            return cell;
        }

 

        /// <summary>
        /// 多行表头，在GridView的RowCreate事件中使用
        /// </summary>
        /// <param name="Row"></param>
        protected void ReDefineHeaderRow(GridViewRow Row)
        {
            if (Row.RowType == DataControlRowType.Header)
            {
                //第一行表头
                TableCellCollection tcHeader = Row.Cells;
                tcHeader.Clear();

 

                tcHeader.Add(DefineTableHeaderCell("差异判断", 2, 1, false));
                tcHeader.Add(DefineTableHeaderCell("银行名称", 2, 1, false));
                tcHeader.Add(DefineTableHeaderCell("银行进款汇总", 1, 2, false));
                tcHeader.Add(DefineTableHeaderCell("控台交易汇总", 1, 2, false));
                tcHeader.Add(DefineTableHeaderCell("当日差异", 2, 1, false));
                tcHeader.Add(DefineTableHeaderCell("差异原因汇总", 1, 3, false));
                tcHeader.Add(DefineTableHeaderCell("累计差异", 2, 1, false));
                tcHeader.Add(DefineTableHeaderCell("处理状态", 2, 1, false));
                tcHeader.Add(DefineTableHeaderCell("操作", 2, 1, true));

 

                tcHeader.Add(DefineTableHeaderCell("笔数", 1, 1, false));
                tcHeader.Add(DefineTableHeaderCell("金额", 1, 1, false));
                tcHeader.Add(DefineTableHeaderCell("笔数", 1, 1, false));
                tcHeader.Add(DefineTableHeaderCell("金额", 1, 1, false));
                tcHeader.Add(DefineTableHeaderCell("类型", 1, 1, false));
                tcHeader.Add(DefineTableHeaderCell("金额", 1, 1, false));
                tcHeader.Add(DefineTableHeaderCell("备注", 1, 1, false));

 

            }
        }

 

        #endregion

 

        /// <summary>
        /// 包含模板列的GridView无法输出html，要现把它复制到其他的gv中
        /// </summary>
        /// <param name="model">需要以邮件发送的gv</param>
        /// <param name="list">gv的数据源</param>
        /// <returns></returns>
        private GridView CopyGridView(GridView model, object list)
        {
            GridView gvTmp = new GridView();
            gvTmp.Width = Unit.Percentage(97);
            gvTmp.CellPadding = 4;
            gvTmp.AutoGenerateColumns = false;
            gvTmp.HorizontalAlign = HorizontalAlign.Center;

 

            for (int i = 0; i < model.Columns.Count; i++)
            {
                DataControlField cell = model.Columns[i];
                cell.ItemStyle.Font.Size = 9;
                gvTmp.Columns.Add(cell as BoundField);

 

            }

 

            gvTmp.DataSource = list;
            gvTmp.DataBind();

 

            return gvTmp;
        }

 

        /// <summary>
        /// 生成邮件内容（html）
        /// </summary>
        /// <param name="model">需要以邮件发送的gv</param>
        /// <param name="title">邮件中表段的Title</param>
        /// <param name="list">gv的数据源</param>
        /// <returns></returns>
        public string GetHtmlOfGridView(GridView model, string title, object list)
        {
            IList lst = list as IList;
            StringBuilder sb = new StringBuilder();
            if (!string.IsNullOrEmpty(title))
            {
                sb.AppendLine("<h5 >" + title + "</h5>");
            }
            if (lst.Count == 0)
            {
                sb.AppendLine("<div  style=\"font-size: 13px;align:Center; font-weight: bold; \" align=\"center\">无记录！</div>");
                return sb.ToString();
            }

 

            string content = "";
            GridView gvTmp = CopyGridView(model, list);
            StringWriter sw = new StringWriter();
            HtmlTextWriter writer = new HtmlTextWriter(sw);
            gvTmp.RenderControl(writer);
            writer.Close();
            content = sw.ToString();
            sb.AppendLine(content);
            sb.AppendLine("<br/>");
            return sb.ToString();
        }

 

    }
}