System.IO.FileNotFoundExecption，即使文件是present

问题描述

我上传使用GUID因为他们的名字的文件，然后我试图下载他们，但我得到一个文件未找到错误，即使文件是存在的服务器上，我想，我做错了什么带命令实际参数的，但我不知道是什么。请告诉我，我错了，任何帮助是AP preciated。

数据库模式：
 我有2列：ReceiptFileName - 存储文件名，不GUID的UI。
                    文件名 - 存储文件名以GUID

。

.aspx的code：

 ＆LT;＆ItemTemplate中GT;
     ＆LT; ASP：LinkBut​​ton的ID =LinkBut​​ton1=服务器的CommandName =下载CommandArgument ='＆LT;％＃绑定（文件名）％GT;'文字='＆LT;％＃绑定（ReceiptFileName）％＆GT;' ＆GT;＆LT; / ASP：LinkBut​​ton的＆GT;
                                ＆LT; / ItemTemplate中＆GT;
                            ＆LT; / ASP：的TemplateField＆GT;
 

code上传：

  {
        如果（FileUpload1.HasFile）
        {
            //检查文件扩展名和放大器;尺寸
            字符串文件名= FileUpload1.PostedFile.FileName;
            {
                文件名=文件名+ Guid.NewGuid（）;
            }
            INT文件大小= FileUpload1.PostedFile.ContentLength;
            如果（文件大小＆GT;（20 * 1024））
            {
                Label1.Text =请上传一个zip或pdf文件;
            }            字符串fileextention = System.IO.Path.GetExtension（FileUpload1.FileName）;
            如果（fileextention.ToLower（）=.ZIP＆放大器;！＆安培;！fileextention.ToLower（）=.PDF）
            {
                Label1.ForeColor = System.Drawing.Color.Green;
                Label1.Text =请上传一个zip或pdf文件;            }            其他
            {
                //字符串ReceiptFileName = Path.GetFileName（FileUpload1.PostedFile.FileName）;
                字符串ReceiptFileName = Path.GetFileName（文件名）;                //存盘                FileUpload1.SaveAs（使用Server.Mappath（Reciepts /+ ReceiptFileName））;
}
 

code对于立即下载：

 保护无效gridExpenditures_RowCommand（对象发件人，GridViewCommandEventArgs E）
    {
        如果（e.CommandName ==下载）
        {
            Response.Clear（）;
            Response.ContentType =应用程序/八位字节流;
            Response.AppendHeader（内容处置，文件名=+ e.CommandArgument）;
            Response.TransmitFile（使用Server.Mappath（〜/报销/ Reciepts /）+ e.CommandArgument）;
            到Response.End（）;
        }
    }
 

解决方案

这可能是仅仅是愚蠢的，但我只能读取文件路径是不同的：

  FileUpload1.SaveAs（使用Server.Mappath（Reciepts /+ ReceiptFileName））;
 

VS

  Response.TransmitFile（使用Server.Mappath（〜/报销/ Reciepts /）
 

最后一个路径具有报销在里面。第一次没有。

I am uploading files using GUID for their names and then I am trying to download them but I am getting a file not found error even when file is there on the server,I think, I am doing something wrong with command arguement but I am not sure what. Please tell me where I am wrong, any help is appreciated.

Database schema: I have 2 columns : ReceiptFileName - Stores filename without GUID for UI. filename - Stores filename with GUID.

Aspx code:

 <ItemTemplate>
     <asp:LinkButton ID="LinkButton1" runat="server" CommandName="Download" CommandArgument='<%# Bind("filename") %>' Text='<%# Bind("ReceiptFileName") %>' ></asp:LinkButton>
                                </ItemTemplate>
                            </asp:TemplateField>

Code for Upload:

{
        if (FileUpload1.HasFile)
        {
            //check file Extension & Size
            string filename = FileUpload1.PostedFile.FileName;
            {
                filename = filename + Guid.NewGuid();
            }
            int filesize = FileUpload1.PostedFile.ContentLength;
            if (filesize > (20 * 1024))
            {
                Label1.Text = "Please upload a zip or a pdf file";
            }

            string fileextention = System.IO.Path.GetExtension(FileUpload1.FileName);
            if (fileextention.ToLower() != ".zip" && fileextention.ToLower() != ".pdf")
            {
                Label1.ForeColor = System.Drawing.Color.Green;
                Label1.Text = "Please upload a zip or a pdf file";

            }



            else
            {
                //string ReceiptFileName = Path.GetFileName(FileUpload1.PostedFile.FileName);
                string ReceiptFileName = Path.GetFileName(filename);

                //save file to disk

                FileUpload1.SaveAs(Server.MapPath("Reciepts/" + ReceiptFileName));
}

Code For Downlaod:

protected void gridExpenditures_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "Download")
        {
            Response.Clear();
            Response.ContentType = "application/octet-stream";
            Response.AppendHeader("content-disposition", "FileName=" + e.CommandArgument);
            Response.TransmitFile(Server.MapPath("~/Reimbursement/Reciepts/") + e.CommandArgument);
            Response.End();
        }
    }

解决方案

It might be just silly but I can only read the file paths are different:

FileUpload1.SaveAs(Server.MapPath("Reciepts/" + ReceiptFileName));

Vs:

Response.TransmitFile(Server.MapPath("~/Reimbursement/Reciepts/")

The last path has Reimbursement in it. The first doesn't.

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