导出EXCEL

最新推荐文章于 2025-09-12 14:21:37 发布

weixin_34061482

最新推荐文章于 2025-09-12 14:21:37 发布

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文章标签： ui

本文提供了一个使用C#生成CSV格式数据并导出为Excel文件的示例源码，适用于数据统计与报表生成。

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;

public partial class _ss : System.Web.UI.Page
{
     protected void Page_Load( object sender, EventArgs e)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add( " col1 ");
        dt.Columns.Add( " col2 ");
        dt.Columns.Add( " col3 ");
        dt.Columns.Add( " col4 ");
        dt.Columns.Add( " col5 ");

         for ( int i = 0; i < 5000; i++)
        {
            DataRow dr = dt.NewRow();
            dr.ItemArray = new object[]{System.Guid.NewGuid().ToString(),
            System.Guid.NewGuid().ToString(),
            System.Guid.NewGuid().ToString(),
            System.Guid.NewGuid().ToString(),
            System.Guid.NewGuid().ToString()};

            dt.Rows.Add(dr);
        }

         if (dt != null)
        {
            StringBuilder sr = new StringBuilder();
             foreach (DataColumn col in dt.Columns)
            {
                sr.Append(col.ColumnName + " \t ");
            }
            sr.Append( " \r\n ");

             foreach (DataRow dr in dt.Rows)
            {
                 foreach ( object obj in dr.ItemArray)
                {
                    sr.Append(obj.ToString() + " \t ");
                }
                sr.Append( " \r\n ");
            }

             // 文本输出为csv个数，可用excel直接打开
            Response.Clear();
            Response.Buffer = true;
            Response.Charset = " gb2312 ";
             // 定义为为附件下载
            Response.AppendHeader( " Content-Disposition ", " attachment;filename=\" " + HttpUtility.UrlEncode( " 统计报表_ ", System.Text.Encoding.UTF8) + DateTime.Now.ToString( " yyyyMMdd-HHmmss-ffffff ") + " .xls\" ");
            Response.ContentEncoding = System.Text.Encoding.GetEncoding( " gb2312 ");
            Response.ContentType = " application/ms-excel ";
             this.EnableViewState = false;
             // 文本输出
            System.IO.StringWriter strWriter = new System.IO.StringWriter();
            strWriter.Write(sr.ToString());
            strWriter.Flush();
             // System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
             // this.RenderControl(htmlWriter);
            Response.Write(strWriter.ToString());
            Response.End();
        }
    }
}

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