ASP.NET导入导出Excel方法大全

    • 本文介绍下,C#实现的可以导出与导入excel的代码一例,有需要的朋友,参考下吧。

      C#实现导出与导入excel。
      代码1:
       
      复制代码 代码示例:
      #region  导出Excel  
      /// <summary>  
      /// 导出Excel  
      /// </summary>  
      /// <param name="page">请求的页面this</param>  
      /// <param name="dataTable">导出的数据源</param>  
      /// <param name="fileName">保存文件名称</param>  
      /// <returns>布尔值</returns>  
      public bool ExportExcel(Page page, DataTable dataTable, string fileName)  
      {  
          try  
          {  
              HttpContext.Current.Response.Clear();  
              HttpContext.Current.Response.Buffer = true;  
              HttpContext.Current.Response.ContentType = "application/vnd.ms-excel.numberformat:@";  
              page.EnableViewState = false;  
              HttpContext.Current.Response.Charset = "UTF-8";  
              HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");//设置输出流为简体中文  
              HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls");  
              //输出列名  
              for (int i = 0; i < dataTable.Columns.Count; i++)  
                HttpContext.Current.Response.Write(dataTable.Columns[i].ColumnName + "\t");  
                HttpContext.Current.Response.Write("\r\n");  
                //输出数据  
              for (int i = 0; i < dataTable.Rows.Count; i++)  
              {  
      for (int j = 0; j < dataTable.Columns.Count; j++)  
      {  
          HttpContext.Current.Response.Write(dataTable.Rows[i][j].ToString() + "\t");  
      }  
      HttpContext.Current.Response.Write("\r\n");  
              }  
              //输出当前缓存内容  
              //HttpContext.Current.Response.Flush();  
              HttpContext.Current.Response.End();  
              return true;  
          }  
          catch  
          {  
              return false;  
          }  
      }  
      #endregion


      代码2
       
      代码示例:
      #region 导出Excel 自定义格式  
      /// <summary>  
      /// 导出Excel    
      /// 1.文本:vnd.ms-excel.numberformat:@  
      /// 2.日期:vnd.ms-excel.numberformat:yyyy/mm/dd  
      /// 3.数字:vnd.ms-excel.numberformat:#,##0.00  
      /// 4.货币:vnd.ms-excel.numberformat:¥#,##0.00  
      /// 5.百分比:vnd.ms-excel.numberformat: #0.00%  
      /// </summary>  
      /// <param name="fileName"></param>  
      /// <param name="dt"></param>  
      /// <returns></returns>  
      public bool Export(string fileName, DataTable dt)  
      {  
         try  
         {  
             HttpResponse resp;  
             resp = System.Web.HttpContext.Current.Response;  
             resp.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");  
             resp.AppendHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls");  
             resp.AppendHeader("Content-Type", "application/ms-excel");  
            
             StringBuilder colHeaders = new StringBuilder();  
             StringBuilder ls_item = new StringBuilder();  
             DataRow[] myRow = dt.Select();  
             int cl = dt.Columns.Count;  
            
             colHeaders.Append(" <html><head> \n ");  
             colHeaders.Append(" <meta http-equiv=‘Content-Type‘ content=‘text/html; charset=gb2312‘ /> \n ");  
             colHeaders.Append(" </head> \n ");  
             colHeaders.Append(" <body> \n ");  
             colHeaders.Append(" <table border=‘1‘> ");  
             colHeaders.Append(" <tr> ");  
             //输出列名  
             for (int i = 0; i < dt.Columns.Count; i++)  
      colHeaders.Append("<td  style=‘background-color:#CCCCCC‘>" + dt.Columns[i].ColumnName + "</td>");  
             colHeaders.Append("</tr> ");  
             resp.Write(colHeaders.ToString());  
             foreach (DataRow row in myRow)  
             {  
      ls_item.Append("<tr>");  
      for (int i = 0; i < cl; i++)  
      {  
         if (i == (cl - 1))  
         {  
             ls_item.Append("<td style=‘vnd.ms-excel.numberformat:@ ‘>" + row[i].ToString() + "</td>" + "\n");  
         }  
         else  
         {  
             ls_item.Append("<td style= ‘vnd.ms-excel.numberformat:@ ‘>" + row[i].ToString() + "</td>");  
         }  
      }  
      ls_item.Append("</tr>");  
             }  
             ls_item.Append(" </table> \n ");  
             ls_item.Append(" </body> \n ");  
             ls_item.Append(" </html>");  
             resp.Write(ls_item.ToString());  
             resp.End();  
             return true;  
         }  
         catch  
         {  
             return false;  
         }  
      }  
      #endregion 
      代码3
       
      代码示例:
      #region 导入Excel  
      public string ImportExcel(string[] list, string filePath)  
      {  
              string isXls = System.IO.Path.GetExtension(filePath).ToLower(); //System.IO.Path.GetExtension获得文件的扩展名  
              if (isXls != ".xls")  
              return "请选择Excel文件导入!";  
              DataSet ds = ExecleDataSet(filePath); //调用自定义方法  
              DataRow[] dr = ds.Tables[0].Select(); //定义一个DataRow数组  
              int rowsnum = ds.Tables[0].Rows.Count;  
              if (ds.Tables[0].Rows.Count == 0)  
              return "Excel无数据!";  
              return "";  
          }  
            
          //OleDB连接读取Excel中数据  
          public DataSet ExecleDataSet(string filePath)  
          {  
              string OleDbConnection = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filePath + ";Extended Properties=‘Excel 8.0; HDR=YES; IMEX=1‘";  
              OleDbConnection conn = new OleDbConnection(OleDbConnection);  
              conn.Open();  
              DataSet ds = new DataSet();  
              OleDbDataAdapter odda = new OleDbDataAdapter("select * from [Sheet1$]", conn);  
              odda.Fill(ds);  
              conn.Close();  
              return ds;  
      }  
      #endregion

    • 转载自:http://www.hello-code.com/blog/asp.net/201401/2645.html

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