编辑：问题恰巧是jQuery-Mobile库在我进行回发时删除了我的文件。我仍然不知道为什么，但我现在正在尝试制作一个自定义的jQuery-Mobile库来查看导致我问题的原因。
我正在尝试制作一个表格，人们可以上传他们的简历并发送给我，但我遇到了一些问题。我将表单发送到后端，方法 SendJobMail ，除了来自 FileUpload 的内容外，所有内容都会被读出。
我尝试添加断点，它会在这一行中突破：
string attachmentFilename = Path.GetFileName(CVUpload.PostedFile.FileName);
它给我以下错误消息：
System.NullReferenceException was unhandled by user code
HResult=-2147467261
Message=Object reference not set to an instance of an object.
Source=PublicSite_ASP
StackTrace:
at PublicSite_ASP.TestPage.SendJobMail() in c:\Users\joris.decraecker\Documents\Visual Studio 2013\Projects\Public Website-Mobile\PublicSite_ASP\default.aspx.cs:line 225
at PublicSite_ASP.TestPage.Page_Load(Object sender, EventArgs e) in c:\Users\joris.decraecker\Documents\Visual Studio 2013\Projects\Public Website-Mobile\PublicSite_ASP\default.aspx.cs:line 31
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:
我也尝试过改变FileUpload，但是这个也没有用：
<label>Selecteer uw CV</label>
<asp:FileUpload runat="server" ID="CVUpload" />
这是我目前的代码：
HTML：
<form runat="server" id="frmApplication" name="frmApplication" role="form" action="default.aspx/SendJobMail" enctype="multipart/form-data">
<div class="row clearfix">
<asp:HiddenField runat="server" ID="vacancyId" Value="" />
<div class="col-sm-6 column">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="row clearfix">
<div class="col-sm-6 column form-column">
<label for="txtNameJob" class="sr-only">Voornaam</label>
<input runat="server" id="txtNameJob" name="firstName" type="text" class="form-control input-lg" placeholder="Voornaam" />
</div>
<div class="col-sm-6 column form-column">
<label for="txtSurnameJob" class="sr-only">Achternaam</label>
<input runat="server" id="txtSurnameJob" name="lastName" class="form-control input-lg" type="text" placeholder="Achternaam" />
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column form-column">
<label for="txtEmailJob" class="sr-only">Email</label>
<input runat="server" id="txtEmailJob" name="email" class="form-control input-lg" type="text" placeholder="Email" />
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column form-column">
<label for="txtTel" class="sr-only">Telefoon</label>
<input runat="server" id="txtTel" name="phone" class="form-control input-lg" type="text" placeholder="Telefoonnummer" />
</div>
</div>
</div>
</div>
</div>
<div class="col-sm-6 column">
<label for="txtMessageJob" class="sr-only">Motivatie</label>
<textarea runat="server" id="txtMessageJob" name="motivation" class="form-control input-lg" rows="7" placeholder="Motivatie"></textarea>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="row clearfix">
<div class="col-sm-6 column">
<div class="input-group form-column">
<span class="input-group-btn">
<span class="btn btn-primary btn-lg btn-file">
Bladeren...
<asp:FileUpload runat="server" ID="CVUpload" />
</span>
</span>
<input runat="server" type="text" id="fileTextField" class="form-control input-lg" placeholder="Selecteer uw CV" readonly="true" />
</div>
</div>
<div class="col-sm-6 column">
<input id="btnSubmit" type="submit" value="Solliciteren" class="btn btn-primary btn-lg pull-right" />
</div>
</div>
</div>
</div>
</form>
代码隐藏：
private void SendJobMail()
{
var client = new MailerServiceReference.IemailClient();
bool succeeded = false;
string recipient = "jobs@domain.eu";
string firstName = txtNameJob.Value;
string lastName = txtSurnameJob.Value;
string telNr = txtTel.Value;
string motivation = txtMessageJob.Value;
string sender = "info@domain.eu";
int vacId = Int32.Parse(vacancyId.Value);
string vacTitle = _vacancies.Find(vac => vac.Id == vacId).Title;
string subject = string.Format("Application from {0} {1} for {2}", firstName, lastName, vacTitle);
motivation += string.Format("\n\n{0}{1}\n{2}\n{3}", firstName, lastName, txtEmailJob.Value, telNr);
//set up and add an attachment
string attachmentFilename = Path.GetFileName(CVUpload.PostedFile.FileName);
Attachment attachment = new Attachment(CVUpload.FileContent, attachmentFilename, MediaTypeNames.Application.Octet); //can interpret PDF and richtextdocument
ContentDisposition disposition = attachment.ContentDisposition; //disposition necessary for some mailing applications
disposition.CreationDate = File.GetCreationTime(attachmentFilename);
disposition.ModificationDate = File.GetLastWriteTime(attachmentFilename);
disposition.ReadDate = File.GetLastAccessTime(attachmentFilename);
disposition.FileName = Path.GetFileName(attachmentFilename);
disposition.Size = CVUpload.PostedFile.ContentLength;
disposition.DispositionType = DispositionTypeNames.Attachment;
try
{
client.Open();
succeeded = client.SendEmail("PublicSite", sender, "info@domain.eu", subject, motivation);
}
catch (Exception e)
{
Console.WriteLine("lalala " + e.Message);
}
finally
{
client.Close();
}
}
答案 0 :(得分：0)
我认为您首先需要在使用之前保存文件..
if (CVUpload.HasFile)
{
var savePath = @"c:\temp\uploads\" + CVUpload.FileName;
CVUpload.SaveAs(savePath);
DisplayFileContents(CVUpload.PostedFile);
}