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    ASP.NET 导出到Excel时保留换行的代码

    2018-05-16 07:55:44 次阅读 稿源:互联网
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    <br style='mso-data-placement:same-cell;'/>
    完整代码:
    代码如下:

    <%@ Page Language="C#" Trace="false" AutoEventWireup="true" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <script runat="server">
    protected void Button1_Click(object sender, EventArgs e)
    {
    System.Web.HttpContext curContext = System.Web.HttpContext.Current;
    // IO用于导出并返回excel文件
    System.IO.StringWriter strWriter = null;
    System.Web.UI.HtmlTextWriter htmlWriter = null;
    // 设置编码和附件格式
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.Buffer = true;
    HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "aaa.xls"));
    curContext.Response.ContentType = "application/vnd.ms-excel";
    curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB18030");
    curContext.Response.Charset = "";
    // 导出excel文件
    strWriter = new System.IO.StringWriter();
    htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
    htmlWriter.WriteLine("标题");
    // 返回客户端
    GridView1.RenderControl(htmlWriter);
    curContext.Response.Write(strWriter.ToString().Replace("<br/>", "<br style='mso-data-placement:same-cell;'/> "));
    curContext.Response.End();
    }
    protected void Page_Load(object sender, EventArgs e)
    {
    if (!Page.IsPostBack)
    {
    GridView1.DataSource = CreateDataSourceByXianhuiMeng();
    GridView1.DataBind();
    }
    }
    System.Data.DataView CreateDataSourceByXianhuiMeng()
    {
    System.Data.DataTable dt = new System.Data.DataTable();
    System.Data.DataRow dr;
    dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));
    dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));
    dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));
    dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));
    dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));
    dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));
    for (int i = 0; i < 8; i++)
    {
    System.Random rd = new System.Random(Environment.TickCount * i); ;
    dr = dt.NewRow();
    dr[0] = "班级" + i.ToString();
    dr[1] = "学生姓名:孟子E章" + i.ToString() + "<br/>所在班级:" + "班级" + i.ToString();
    dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
    dr[3] = System.Math.Round(rd.NextDouble() * 100, 2);
    dr[4] = System.Math.Round(rd.NextDouble() * 100, 2);
    dr[5] = System.Math.Round(rd.NextDouble() * 100, 2);
    dt.Rows.Add(dr);
    }
    System.Data.DataView dv = new System.Data.DataView(dt);
    return dv;
    }
    public override void VerifyRenderingInServerForm(Control control)
    { }
    </script>
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head id="Head1" runat="server">
    <title>无标题页</title>
    </head>
    <body>
    <form id="form1" runat="server">
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
    <asp:BoundField HtmlEncode="false" DataField="学生姓名" HeaderText="测试字段" />
    </Columns>
    </asp:GridView>
    <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
    </form>
    </body>
    </html>

    要查阅 Excel 中使用的样式规范,请参考:Microsoft® Office HTML and XML Reference。
    下载地址:http://download.microsoft.com/download/a/c/1/ac18e8a2-ce20-41b5-8407-c4cec4a17f19/ofhtml9.exe

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