无法使用文件路径查看图像

Question

问题:无法使用FilePath显示图像

我有文件上传按钮，捕获文件路径&当我点击上传按钮，它应该显示我所选择的图像。但这并没有发生?

我错过了什么?我需要将路径转换为图像url吗?如果是，请提供背后的代码给我??

Thanks in advance.

这是我的代码....

Protected Sub Button1_Click(sender As Object, e As System.EventArgs) Handles Button1.Click
    Dim path As String
    path = Server.MapPath(FileUpload1.FileName)
    Image1.ImageUrl = path
    Label1.Text = Image1.ImageUrl
End Sub

Answer 1

您忘记保存文件了?

FileUpload1.SaveAs(string SomeFileNameOnServer)也应该发生，在您从服务器显示之前。

(不确定上面这行在VB.NET中是怎么写的)

Protected Sub Button1_Click(sender As Object, e As System.EventArgs) Handles Button1.Click
        Dim path As String
        path = Server.MapPath("~/.") + FileUpload1.FileName;
        FileUpload1.SaveAs(path)
        Image1.ImageUrl = path
        Label1.Text = Image1.ImageUrl
End Sub