主题：ftp上传图片

用：按钮上传，比如这样

Dim dlg As New openFileDialog '定义一个新的SaveFileDialog
dlg.MultiSelect = True
If dlg.showDialog = DialogResult.Ok Then '如果用户单击了确定按钮
    Dim ftp1 As new  ftpclient
    ftp1.host="127.****.0"
    ftp1.Account = "ft***"
    ftp1.password = "1****"
    Dim r As Row = Tables("计量产值统计表").Current
    Dim ls = r.DataRow.Lines("附件")
    For Each f As String In dlg.FileNames
        Dim d As String = Format(Date.Today ,"yyyyMM") '格式化日期为202103
        Dim file = "/计量产值管理/" & r("项目名称") & "/" & d & "/" & filesys.GetName(f)
        If ftp1.DirExists("/计量产值管理/" & r("项目名称")) = False Then
            ftp1.MakeDir("/计量产值管理/" & r("项目名称"))
        End If
        If ftp1.DirExists("/计量产值管理/" & r("项目名称") & "/" & d) = False Then
            ftp1.MakeDir("/计量产值管理/" & r("项目名称") & "/" & d)
        End If
       
        Dim Result As DialogResult
        If ftp1.FileExists(file) Then
            Result = MessageBox.Show("文件已经存在,是否覆盖?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
        End If
        If result = Nothing OrElse result = DialogResult.Yes Then
            If  ftp1.Upload(f,file,True) = True Then
                If ls.contains(file) = False Then
                    ls.add(file)
                End If
            Else
                MessageBox.Show( f & "上传失败" ,"提示" ,MessageBoxButtons.OK,MessageBoxIcon.Question)
            End If
        End If
    Next
    r.DataRow.lines("附件") = ls
    ftp1.Close
End If