Question

我在asp.net mvc中使用Reportviewer，并在将其转换为byte后将其呈现为pdf格式。代码如下：

    public ActionResult PrintPO(string type)
    {
        LocalReport lr = new LocalReport();
        string path = Url.Content(Server.MapPath("~/Report/RepPurchaseOrder.rdlc"));
        if (System.IO.File.Exists(path))
        {
            lr.ReportPath = path;
        }
        else
        {
            return Content("Report File Not Found!");
        }

        ReportDataSource rd = new ReportDataSource("Data", list));

        lr.DataSources.Add(rd);

        string reportType = type;
        string mimeType;
        string encoding;
        string fileNameExtension;

        string deviceInfo =

        "<DeviceInfo>" +
        "  <OutputFormat>" + id + "</OutputFormat>" +
        "  <PageWidth>10in</PageWidth>" +
        "  <PageHeight>10in</PageHeight>" +
        "  <MarginTop>0.5in</MarginTop>" +
        "  <MarginLeft>1in</MarginLeft>" +
        "  <MarginRight>1in</MarginRight>" +
        "  <MarginBottom>0.5in</MarginBottom>" +
        "</DeviceInfo>";

        Warning[] warnings;
        string[] streams;
        byte[] renderedBytes;

        renderedBytes = lr.Render(
            reportType,
            deviceInfo,
            out mimeType,
            out encoding,
            out fileNameExtension,
            out streams,
            out warnings);

        FileContentResult fileResult = File(renderedBytes, mimeType);

        return fileResult;
    }

我想将此文件保存到我的服务器位置。例如：/Content/PDF/Result1.pdf

我想将渲染字节的副本复制到文件中，以便稍后我也能看到它的预览。

我怎样才能实现它？我没有使用html FileUpload控件。

请帮帮我。

感谢。

Answer 1

您可以在服务器端使用FileStream保存它。

using (FileStream fileStream = System.IO.File.Create(filePath, renderedBytes.Length)){
    fileStream.Write(renderedBytes, 0, renderedBytes.Length);
}

我在方法结束时添加了在指定文件路径（/Content/PDF/Result1.pdf）中保存文件的代码，然后再设置FileContentResult

public ActionResult PrintPO(string type)
{
    LocalReport lr = new LocalReport();
    string path = Url.Content(Server.MapPath("~/Report/RepPurchaseOrder.rdlc"));
    if (System.IO.File.Exists(path))
    {
        lr.ReportPath = path;
    }
    else
    {
        return Content("Report File Not Found!");
    }

    ReportDataSource rd = new ReportDataSource("Data", list));

    lr.DataSources.Add(rd);

    string reportType = type;
    string mimeType;
    string encoding;
    string fileNameExtension;
    string id="Dynamic ID Will Be Here";

    string deviceInfo =
    "<DeviceInfo>" +
    "  <OutputFormat>" + id + "</OutputFormat>" +
    "  <PageWidth>10in</PageWidth>" +
    "  <PageHeight>10in</PageHeight>" +
    "  <MarginTop>0.5in</MarginTop>" +
    "  <MarginLeft>1in</MarginLeft>" +
    "  <MarginRight>1in</MarginRight>" +
    "  <MarginBottom>0.5in</MarginBottom>" +
    "</DeviceInfo>";

    Warning[] warnings;
    string[] streams;
    byte[] renderedBytes;

    renderedBytes = lr.Render(
        reportType,
        deviceInfo,
        out mimeType,
        out encoding,
        out fileNameExtension,
        out streams,
        out warnings);

    //Saving renderedBytes to File ~/Content/PDF/Result1.pdf
    var filesDir = Server.MapPath(@"~/Content/PDF");
    if (!Directory.Exists(filesDir)) {
        Directory.CreateDirectory(filesDir);
    }
    var filePath = Path.Combine(filesDir, "Result1.pdf");
    using (FileStream fileStream = System.IO.File.Create(filePath, renderedBytes.Length)) {
        fileStream.Write(renderedBytes, 0, renderedBytes.Length);
    }

    FileContentResult fileResult = File(renderedBytes, mimeType);

    return fileResult;
}

如何在不使用html fileupload控件的情况下将文件保存到服务器？

1 个答案: