Question

我一直在努力解决问题一段时间，我正式放弃了。有人会帮我弄清楚以下代码有什么问题。我正在上传图片，然后我想显示它。

这是我的上传图片代码背后：

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
If FileUpload1.HasFile Then
 Try
  FileUpload1.SaveAs("C:/BegASPNET/test/Pictures/Profile/" + FileUpload1.FileName)
  Label1.Text = "File name: " + FileUpload1.PostedFile.FileName
 Catch ex As Exception
    Label1.Text = "ERROR: " & ex.Message.ToString()
  End Try
Else
  Label1.Text = "You have not specified a file."
End If


Using myEntities As New DatabaseEntities()
  Dim pic As Picture
  pic = New Picture()
  pic.UserID = Profile.ID
  pic.ImageUrl = "~/Pictures/Profile/" + FileUpload1.FileName
  myEntities.AddToPictures(pic)
  myEntities.SaveChanges()
End Using
End Sub

.aspx文件：

<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"/>

然后要显示图像，我的Code Behind是：

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Me.Load   

Using myProfile As New DatabaseEntities()
  Dim prof = (From p In myProfile.UserProfiles
             Where p.UserID = Profile.ID
             Select p).SingleOrDefault()
  dFNameLabel.Text = prof.FirstName
  dLNameLabel.Text = prof.LastName
  dDOBLabel.Text = prof.DOB
  dGenderLabel.Text = prof.Gender
  dEmailLabel.Text = prof.Email
  Dim pic = (From pi In myProfile.Pictures
            Where pi.UserID = Profile.ID AndAlso pi.picDefault = True
            Select pi.ImageUrl).SingleOrDefault
End Using
End Sub

我的.aspx是：

<asp:Image ID="ImageUrl" runat="server" ImageUrl='<%# Eval("ImageUrl") %>'/>

我验证了图片网址在数据库中，并且图片已保存到文件中。如果我在.aspx文件的图像控件中硬编码绝对路径，则会显示图片。但是，它不适用于上述'＆lt;％＃Eval（“ImageUrl”）％＆gt;'码。我不知道问题出在哪里，所以任何帮助都会受到赞赏！

Answer 1

问题是当您尝试保存图像时，

本声明

  FileUpload1.SaveAs("C:/BegASPNET/test/Pictures/Profile/" + FileUpload1.FileName)

应该像......

  FileUpload1.SaveAs(Server.MapPath("~/Pictures/Profile/") + FileUpload1.FileName)

Answer 2

private string ConfigFileName = ConfigurationManager.AppSettings["FileName"];
string strAppPath = Request.PhysicalApplicationPath + "ProductImage";

string strImg = ConfigFileName + Request.Params["ModuleID"].ToString() + ".jpg";
fileupload1.PostedFile.SaveAs(strAppPath + "//" + strImg);

Asp.Net图像不会显示

2 个答案: