Question

黄色，我有两个字符串 - FileName和UString。我想通过下载按钮下载此文件。文件的路径必须是动态的，并且与FileName的故事相同 HomeController：

    public FileResult GetPdf() 
    {
        Read read = new Read(); //in Read class i have the data readed from XML (thats the file name and unique string.
        string Ustring = read.VratUstring(); //UString - is the containing folder of .pdf
        string FileName = read.VratFileName(); // Name of file

        return File(@"E:/Miriam/"+ Ustring +"/" + FileName +".pdf", "application/pdf",  FileName +".pdf");

    }

按钮：

                <div class="form-group">
                    <div class="content">
                        <input type="submit" value="" class="myButton" formaction="GetPdf" />
                    </div>
                </div>

我从浏览器获得的结果是：

Soubor E：\ Miriam.pdf nebyl nalezen。 // thast意味着文件E：没有找到Miriam / .pdf。但我错过了ustring和文件名。路径应如下所示： E：\仪\ dlvhkjclkjvhklcDKKF2 \ CelejmPDF.pdf

命名空间MVC_SAFE.Models { 课阅读 { public string JobName {get;组; } //工作名称 public int Index {get;组; } // verzion public string FileName {get;组; } // Cele jmeno * .pdf a * .xml public string Customer {get;组; } // Zakaznik 公共字符串URL {get;组; } // URL html stranky（odkaz z mailu） public string UString {get;组; } // unikatni klic pro html sooubor a adresar z eska 公共字符串Lang {get;组; } // Jazykova verze public DateTime Created {get;组; } // cas odeslani

    //precte a vypise hodnoty vsech nodu (uzlu)
    public void Precti(string ustring) //unikatni klic zadany zakaznikem
    {
        //nacteni vstupniho xml
        List<Uzivatel> uzivatele = new List<Uzivatel>();  //pripojuju tridu uzivatel
        using (XmlReader xr = XmlReader.Create(@"E:/Miriam/" + ustring + "/" + ustring + ".xml")) //cesta k *.xml souboru + hodnoty z xml jsou ulozene v xr
        {
            string jobName = "";   //Jmeno zakazky
            int index = 0;  //Verze korektury
            string fileName = "";  //Cele jmeno *.pdf a *.xml
            string customer = "";  //Zakaznik
            string url = "";   //URL html stranky (odkaz z mailu)
            string uString = "";  //unikatni klic pro html sooubor a adresar z eska
            string lang = ""; //Jazykova verze
            DateTime created = DateTime.Now; //cas odeslani
            string element = "";  //element tagu


            while (xr.Read())
            {
                if (xr.NodeType == XmlNodeType.Element)  //
                {
                    element = xr.Name; // název aktuálního elementu
                }
                else if (xr.NodeType == XmlNodeType.Text) //nacita hodnoty elementu

                    switch (element)
                    {
                        case "JobName":
                            jobName = xr.Value;
                            break;
                        case "Index":
                            index = int.Parse(xr.Value);
                            break;
                        case "FileName":
                            fileName = xr.Value;
                            break;
                        case "Customer":
                            customer = xr.Value;
                            break;
                        case "URL":
                            url = xr.Value;
                            break;
                        case "UString":
                            uString = xr.Value;
                            break;
                        case "Lang":
                            lang = xr.Value;
                            break;
                        case "Created":
                            created = DateTime.Parse(xr.Value);
                            break;

                    }

                else if ((xr.NodeType == XmlNodeType.EndElement) && (xr.Name == "SAFE"))
                    uzivatele.Add(new Uzivatel(jobName, index, fileName, customer, url, uString, lang, created));


                foreach (Uzivatel u in uzivatele)
                {
                    Console.WriteLine(u);
                }

                JobName = jobName;
                Index = index;
                FileName = fileName;
                Customer = customer;
                URL = url;
                ustring = uString;
                Lang = lang;
                Created = created;
            }

        }
    }

 public string VratJobName()
    { return JobName; }
    public int VratIndex()
        { return Index; }
    public string VratFileName()
        { return FileName; }
    public string VratCustomer()
        { return Customer; }
   public string VratUstring() 
        {return UString;}  
}

}

这里是动作结果，其中我将数据存储到viewBag。我不明白为什么它的工作和getprd没有

    [HttpPost]
    public ActionResult Potvrzeni(ParsovaniXml2Web parsovaniXml) //zobrayi ustring zadany klientem
    {
        if (ModelState.IsValid)//potvrzeni vyhledavaciho klice + sem chci vlozit parsovani z xml do db a nacteni dat z db

        {
            Read read = new Read();
            read.Precti(parsovaniXml.UString);

            ViewBag.Index = read.Index;
            ViewBag.UString = parsovaniXml.UString;
            ViewBag.Zakaznik = read.Customer;
            ViewBag.Cas = read.Created;
            ViewBag.JobName = read.JobName;
            ViewBag.Filename = read.FileName;


        }
        return View();
    }

为什么我无法从我的两个字符串中获取数据？亲切的问候克拉马斯

Answer 1

在Precti方法的末尾设置属性时，变量名称不正确。

Precti方法采用ustring参数，用于查找XML文件。

在switch / case语句中，您将局部变量uString设置为找到的值：

case "UString":
     uString = xr.Value;
break;

在方法结束时，输入变量将设置为找到的值：

ustring = uString;

要将属性设置为您从XML文件中读取的值，该行应为：

UString = uString;

只是一些建议：

ustring有三种外壳变体。您应该考虑为至少一个变量使用更具描述性的名称，而不是依赖于单个字符大小写差异。更具描述性的名称不仅可以使您的代码更具可读性，还可以大大减少这些错误。

ASP.Net MVC - 下载动态链接* .pdf

1 个答案: