DataTable数据导出到Excel-优快云博客

本文介绍了两种将数据导出到Excel的方法，一种适用于Web环境，另一种则既可用于WinForm也可用于Web。第一种方法使用StringBuilder来构建HTML表格并直接写入到HTTP响应中；第二种方法通过Microsoft Excel Interop组件在内存中创建Excel文件。

最近没事Reflect了一个dll，发现数据导出到Excel的方法。写的还不错，可以在我的博客里下载Reflector

public void DataBindTitleExcel(Page pPage, DataTable dt, string ExcelTitle, string strUserMsg)

{

HttpResponse response = pPage.Response;

if (dt.Rows.Count == 0)

{

response.Write("<script>alert('对不起,没有可用于导出的数据!')</script>");

response.End();

}

response.ContentEncoding = Encoding.GetEncoding("GB2312");

response.ContentType = "application/ms-excel";

response.AppendHeader("Content-Disposition", "attachment;filename=Export.xls");

int count = dt.Columns.Count;

StringBuilder builder = new StringBuilder();

builder.Append("<html><head>\n");

builder.Append("<meta http-equiv=\"Content-Language\" content=\"zh-cn\">\n");

builder.Append("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">\n");

builder.Append("</head>\n");

builder.Append("<table border=1>");

if (ExcelTitle != "")

{

string str = "<font size=4><b>" + ExcelTitle + "</b></font>";

if (strUserMsg != "")

{

str = str + "（" + strUserMsg + "）";

}

builder.Append(string.Concat(new object[] { "<tr><td colspan=", count, ">", str, "</td></tr>" }));

}

builder.Append("<tr><td colspan=" + count + " valign=middle height=24>");

builder.Append("查询时间：" + DateTime.Now.ToString("G") + "</td></tr>");

builder.Append("<tr>\n");

for (int i = 0; i < count; i++)

{

if (dt.Columns[i].Caption.ToString().ToLower() != "id")

{

builder.Append("<td bgcolor=#CCFFCC><b>" + dt.Columns[i].Caption.ToString() + "</b></td>\n");

}

foreach (DataRow row in dt.Rows)

{

builder.Append("<tr>");

for (int j = 0; j < count; j++)

{

if (dt.Columns[j].Caption.ToString().ToLower() != "id")

{

builder.Append("<td style='vnd.ms-excel.numberformat:@'>" + row[j].ToString() + "</td>");

}

builder.Append("</tr>\n");

}

builder.Append("</table>\n");

response.Write(builder.ToString());

response.End();

}

再看看下面这个简单的，需要引入Microsoft Excel 11.0 liberary

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

namespace Utility.Util

{

public class Excelcs#region

public class Excelcs

{

public static bool DataGridviewShowToExcel(DataTable dt, bool isShowExcle)

{

if (dt.Rows.Count == 0)

return false;

//建¡§立¢¡éExcel对?象¨®

Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

excel.Application.Workbooks.Add(true);

excel.Visible = isShowExcle;

//生¦¨²成¨¦字Á?段?名?称?

for (int i = 0; i < dt.Columns.Count; i++)

{

excel.Cells[1, i + 1] = dt.Columns[i].Caption;

}

//填¬?充?数ºy据Y

for (int i = 0; i < dt.Rows.Count - 1; i++)

{

for (int j = 0; j < dt.Columns.Count; j++)

{

if (dt.Rows[j][i].GetType() == typeof(string))

{

excel.Cells[i + 2, j + 1] = "'" + dt.Rows[j][i].ToString();

}

else

{

excel.Cells[i + 2, j + 1] = dt.Rows[j][i].ToString();

}

return true;

}

#endregion

}

第一种只适用于web，第二种winform和web都可

本文转自 BruceAndLee 51CTO博客，原文链接：http://blog.51cto.com/leelei/325361，如需转载请自行联系原作者