Question

想知道，如果有人可以提供帮助。我编写了这段代码，它会生成一个CSV文件电子表格并将其保存到指定位置。我想通过从存储位置读取文件然后询问用户他们想要存储它的位置来显示“另存为”对话框。未生成excel文件，在下一个窗口中单击“导出到CSV”后，它将显示为未定义为massege！但是我的问题是我写的代码似乎是直接将文件输出到我的浏览器，所以我在浏览器屏幕上获取了CSV文件的所有内容，而没有按预期显示另存为对话框！

这是我的代码

  public ActionResult ExportToCSSReport(List<CEPMobility.CEPServiceProxy.CSSReport>  Report) 
        {
            MemoryStream output = new MemoryStream(); 
            StreamWriter writer = new StreamWriter(output, System.Text.Encoding.UTF8);
            writer.WriteLine("PROJECT NAME,CSS ID,CSS Name,Customer Reprentative Name,CSS Recived Date,CSI,TOP 3 STRENGTH,TOP 3 OFI,Any Other COMMENT");
            foreach (CEPMobility.CEPServiceProxy.CSSReport objreport in Report)
            {
                writer.WriteLine("\"" + objreport.PROJECT_NAME + "\",\"" + objreport.CSS_ID + "\",\"" + objreport.CSS_NAME + "\",\"" + objreport.CUST_REP_NAME + "\",\"" + objreport.CSS_RECIEVED_DT + "\",\"" + objreport.CSI + "\",\"" + objreport.TOP_3_STRENGTH + "\",\"" + objreport.TOP_3_OFI + "\",\"" + objreport.COMMENT + "\""); 
            } 
            writer.Flush(); 
            output.Seek(0, SeekOrigin.Begin);
            return File(output, "text/csv", "CSSReport.csv"); 
        }

作为对gor的回应，它会在顶部显示相同的未定义消息：

public ActionResult ExportToCSSReport(List<CEPMobility.CEPServiceProxy.CSSReport>  Report) 
{
    CEPServiceProxy.CEPDataServiceClient client = null;
    client = new CEPServiceProxy.CEPDataServiceClient();
    lstCSSReport = client.GetCSSReport(cSS_NAME, in_Cust_ID).ToList();
    MemoryStream output = new MemoryStream(); 
    StreamWriter writer = new StreamWriter(output, System.Text.Encoding.UTF8);
    writer.WriteLine("PROJECT NAME,CSS ID,CSS Name,Customer Reprentative Name,CSS Recived Date,CSI,TOP 3 STRENGTH,TOP 3 OFI,Any Other COMMENT");
    foreach (CEPMobility.CEPServiceProxy.CSSReport objreport in Report)
    {
        writer.WriteLine("\"" + objreport.PROJECT_NAME + "\",\"" + objreport.CSS_ID + "\",\"" + objreport.CSS_NAME + "\",\"" + objreport.CUST_REP_NAME + "\",\"" + objreport.CSS_RECIEVED_DT + "\",\"" + objreport.CSI + "\",\"" + objreport.TOP_3_STRENGTH + "\",\"" + objreport.TOP_3_OFI + "\",\"" + objreport.COMMENT + "\""); 
    } 
    writer.Flush(); 
    output.Seek(0, SeekOrigin.Begin);
    Response.AddHeader("Content-Disposition", "attachment;filename=CSSReport.csv");
    return File(output, "text/csv", "CSSReport.csv"); 
}

Answer 1

您应该在回复中添加 Content-Disposition 标头。像这样：

Response.AddHeader("Content-Disposition", "attachment;filename=CSSReport.csv");

在mvc中保存本地计算机的文件对话框

1 个答案: