C# 在c中导出到Excel#

我有一个gridview页面。我需要下载excel格式的gridview数据。我使用以下代码下载到excel格式

public static void Export(string fileName, GridView gv)
{
    string style = @"<style> .text { mso-number-format:\@;text-align:right; } </style> ";
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
    HttpContext.Current.Response.ContentType = "application/ms-excel";

    using (StringWriter sw = new StringWriter())
    {
        using (HtmlTextWriter htw = new HtmlTextWriter(sw))
        {
            HttpContext.Current.Response.Write(style);

            //  Create a table to contain the grid      
            System.Web.UI.WebControls.Table table = new System.Web.UI.WebControls.Table();

            //  include the gridline settings  
            table.GridLines = gv.GridLines;

            //  add the header row to the table 
            if (gv.HeaderRow != null)
            {
                PrepareControlForExport(gv.HeaderRow);
                table.Rows.Add(gv.HeaderRow);
            }

            //  add each of the data rows to the table   
            foreach (GridViewRow row in gv.Rows)
            {
                // add numeric style for each cell   
                foreach (TableCell cell in row.Cells)
                {
                    cell.Attributes.Add("class", "text");
                }
                PrepareControlForExport(row);
                table.Rows.Add(row);
            }

            //  add the footer row to the table  
            if (gv.FooterRow != null)
            {
                PrepareControlForExport(gv.FooterRow);
                table.Rows.Add(gv.FooterRow);
            }

            //  render the table into the htmlwriter  
            table.RenderControl(htw);

            //  render the htmlwriter into the response
            HttpContext.Current.Response.Write(sw.ToString());
            HttpContext.Current.ApplicationInstance.CompleteRequest();
        }
    }
}

/// <summary>
/// Replace any of the contained controls with literals        
/// </summary>       
/// <param name="control"></param> 
private static void PrepareControlForExport(Control control)
{
    for (int i = 0; i < control.Controls.Count; i++)
    {
        Control current = control.Controls[i];

        if (current is LinkButton)
        {
            control.Controls.Remove(current);
            control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
        }
        else if (current is ImageButton)
        {
            control.Controls.Remove(current);
            control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
        }
        else if (current is HyperLink)
        {
            control.Controls.Remove(current);
            control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
        }
        else if (current is DropDownList)
        {
            control.Controls.Remove(current);
            control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
        }
        else if (current is CheckBox)
        {
            control.Controls.Remove(current);
            control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
        }
        if (current.HasControls())
        {
            PrepareControlForExport(current);
        }
    }
}

publicstaticvoid导出（字符串文件名，GridView-gv）
{
字符串样式=@“。文本{mso编号格式：\@；文本对齐：右；}”；
HttpContext.Current.Response.Clear（）；
HttpContext.Current.Response.AddHeader（“内容处置”，string.Format（“附件；文件名={0}”，文件名））；
HttpContext.Current.Response.ContentType=“应用程序/ms excel”；
使用（StringWriter sw=new StringWriter（））
{
使用（HtmlTextWriter htw=新的HtmlTextWriter（sw））
{
HttpContext.Current.Response.Write（样式）；
//创建一个包含网格的表
System.Web.UI.WebControls.Table Table=新的System.Web.UI.WebControls.Table（）；
//包括网格线设置
table.GridLines=gv.GridLines；
//将标题行添加到表中
如果（gv.HeaderRow！=null）
{
准备控制出口（gv.HeaderRow）；
表.行.添加（gv.HeaderRow）；
}
//将每个数据行添加到表中
foreach（gv.Rows中的GridViewRow行）
{
//为每个单元格添加数字样式
foreach（行中的表格单元格。单元格）
{
添加（“类”、“文本”）；
}
准备控制输出（世界其他地区）；
table.Rows.Add（行）；
}
//将页脚行添加到表中
如果（gv.FooterRow！=null）
{
PrepareControlForExport（gv.FooterRow）；
table.Rows.Add（gv.FooterRow）；
}
//将表呈现到htmlwriter中
表2.RenderControl（htw）；
//将htmlwriter呈现到响应中
HttpContext.Current.Response.Write（sw.ToString（））；
HttpContext.Current.ApplicationInstance.CompleteRequest（）；
}
}
}
/// 
///用文本替换任何包含的控件
///        
///  
专用静态void PrepareControlForExport（控制）
{
对于（int i=0；i

下载该文件后，也会下载母版页的css文件。

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请告诉我如何解决这个问题。

从C#创建真正Excel文件的最简单方法是使用ClosedXML库：。ClosedXML还可以作为NuGet软件包提供，以便于入门。

试试我的工作方法：

void ExportToExcel(GridView grdData, string filename)
{
    grdData.BorderStyle = BorderStyle.Solid;
    grdData.BorderWidth = 1;
    grdData.BackColor = Color.WhiteSmoke;
    grdData.GridLines = GridLines.Both;
    grdData.Font.Name = "Verdana";
    grdData.Font.Size = FontUnit.XXSmall;
    grdData.HeaderStyle.BackColor = Color.DimGray;
    grdData.HeaderStyle.ForeColor = Color.White;
    grdData.RowStyle.HorizontalAlign = HorizontalAlign.Left;
    grdData.RowStyle.VerticalAlign = VerticalAlign.Top;

    HttpResponse response = HttpContext.Current.Response;
    response.Clear();
    response.Charset = "";
    response.ContentType = "application/vnd.ms-excel";
    response.AddHeader("Content-Disposition", "attachment;filename=\"" + filename+ "\"");

    using (var sw = new StringWriter())
    {
        using (var htw = new HtmlTextWriter(sw))
        {
            grdData.RenderControl(htw);
            response.Write(sw.ToString());
            response.End();
        }
    }
} 

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我不明白你的问题是什么，你能试着更详细地解释一下吗？导出数据是否比希望Excel打开HTML更容易？请解释你的答案（为什么这样做，与其他解决方案有什么不同）

        Response.ClearContent();

        Response.Buffer = true;

        Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "excelname.xls"));

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

        //which row you dont want in gridview
        GridView5.Columns[0].Visible = false;

        StringWriter sw = new StringWriter();

        HtmlTextWriter htw = new HtmlTextWriter(sw);

        GridView5.AllowPaging = false;

        GridView5.RenderControl(htw);

        Response.Write(sw.ToString());

        Response.End();