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[ASP.net教程]数据的动态合并和导出至EXCEL


最近一段时间都在处理数据的动态合并和导出EXCEL的问题,写个demo记录下,希望和我碰到同样问题的博友可以顺利解决;后面会提供demo下载链接。

(VS2012,ASP.NET)

一、主要解决以下问题:

1、根据业务逻辑动态合并table单元格
2、动态合并后序号重写
3、datatable导出excel
4、datatable导出excel特殊字符处理
5、在实际问题中可能还有少许BUG,自行调试

 

 

二、重要代码摘录:

1、前台获取table HTML代码: 

1 <input type="hidden" runat="server" id="lblTableHtml" />

View Code
1 function getDataHtml() {2       var table = document.getElementById("gridTable");3       if (table != null) {4         var html = table.innerHTML;5         document.getElementById("lblTableHtml").value = html;6       }7     }

View Code

 2、自定义合并单元格:

 1 // 1、通过关联字段分组 2         for (int i = gridTable.Rows.Count - 1; i > 0; i--) 3         { 4           HtmlTableCell oCell_previous = gridTable.Rows[i - 1].Cells[4]; 5           HtmlTableCell oCell = gridTable.Rows[i].Cells[4]; 6           if (oCell_previous != null && oCell != null) 7           { 8             if (oCell.InnerText == oCell_previous.InnerText) 9             {10               for (int j = 4; j <= 7; j++)11               {12                 HtmlTableCell oCell_previousI = gridTable.Rows[i - 1].Cells[j];13                 HtmlTableCell oCellI = gridTable.Rows[i].Cells[j];14                 if (oCell_previousI != null && oCellI != null)15                 {16                   oCell_previousI.RowSpan = (oCell_previousI.RowSpan == -1) ? 1 : oCell_previousI.RowSpan;17                   oCellI.RowSpan = (oCellI.RowSpan == -1) ? 1 : oCellI.RowSpan;18                 }19 20                 oCellI.Visible = false;21                 oCell_previousI.RowSpan += oCellI.RowSpan;22               }23             }24           }25         }

View Code

3、导出EXCEL逻辑:

 1 Response.Clear(); 2       Response.ContentType = "application/vnd.ms-excel"; 3       string excelname = sFileName + DateTime.Now.ToString("yyyyMMddHHmmss"); 4       Response.AddHeader("content-disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode(excelname, System.Text.Encoding.UTF8) + ".xls"); 5       this.EnableViewState = false; 6       System.IO.StringWriter oStringWriter = new System.IO.StringWriter(); 7       System.Web.UI.HtmlTextWriter writer = new System.Web.UI.HtmlTextWriter(oStringWriter); 8       System.Text.StringBuilder builder = new System.Text.StringBuilder(); 9       builder.Append("<table border='1'>");10       // 取出已经排好版的table11       string sHtml = lblTableHtml.Value;12       builder.Append(sHtml);13       builder.Append("</table>");14       writer.Write(builder.ToString());15       writer.Close();16       Response.Write(oStringWriter.ToString());17       Response.End();

View Code

 

 

三、Demo下载链接:

 http://files.cnblogs.com/files/zhaosx/ExcelExportDemo.zip