C#导出EXCEL没有网格线的解决方法

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C#导出EXCEL没有网格线的解决方法

今天在做项目时，通过流导出数据到Excel却不显示网格线，真是郁闷。上网查了好久才得一良方（注意<XML>标签中的代码）：
DataTable thisTable = DBHelper.GetDataTable("select * from table");
string sheetName = "sheetName";
string fileName = "fileName";

if (thisTable != null)
{
    StringWriter sw = new StringWriter();
    sw.WriteLine("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">");
    sw.WriteLine("<head>");
    sw.WriteLine("");
    sw.WriteLine("</head>");
    sw.WriteLine("<body>");
    sw.WriteLine("<table>");
    sw.WriteLine(" <tr>");
    sw.WriteLine("  <td><strong>列名0</strong></td>");
    sw.WriteLine("  <td>列名1</td>");
    sw.WriteLine("  <td>列名2</td>");
    sw.WriteLine("  <td>列名3</td>");
    sw.WriteLine("  <td>列名4</td>");
    sw.WriteLine("  <td>列名5</td>");
    sw.WriteLine(" </tr>");
    foreach (DataRow dr in thisTable.Rows)
    {
        sw.WriteLine(" <tr>");
        sw.WriteLine("  <td>" + dr["C0"] + "</td>");
        sw.WriteLine("  <td>" + dr["C1"] + "</td>");
        sw.WriteLine("  <td>" + dr["C2"] + "</td>");
        sw.WriteLine("  <td>" + dr["C3"] + "</td>");
        sw.WriteLine("  <td>" + dr["C4"] + "</td>");
        sw.WriteLine("  <td>" + dr["C5"] + "</td>");
        sw.WriteLine(" </tr>");
    }
    sw.WriteLine("</table>");
    sw.WriteLine("</body>");
    sw.WriteLine("</html>");
    sw.Close();
    Response.Clear();
    Response.Buffer = true;
    Response.Charset = "UTF-8";
    this.EnableViewState = false;
    Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName +".xls");
    Response.ContentType = "application/ms-excel";
    Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
    Response.Write(sw);
    Response.End();
}

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原文地址：https://www.cnblogs.com/linyechengwei/p/1597835.html