DOCUMENT:Q173264 29-AUG-1997 [vbwin] TITLE :HOWTO: Internet Transfer Control Using Username and Password PRODUCT :Microsoft Visual Basic for Windows PROD/VER:WINDOWS:5.0 OPER/SYS:WINDOWS KEYWORDS:PrgCtrlsStd vb5all ====================================================================== --------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 5.0 --------------------------------------------------------------------- SUMMARY ======= When setting the Internet Transfer Control URL, Username, and Password properties programmatically, the order in which you do it is very important. If you don't set the URL property before the Username and Password properties, you will get the following error: Run-time error '35754' Unable to connect to remote host IMPORTANT: The Username is sent as Anonymous if the URL property is not set first (regardless of the UserName and Password properties). So when connecting to an FTP server, you would be accessing the URL with the Anonymous credentials, NOT with the credentials you intended (according Username and Password Inet properties). NOTE: The Internet Transfer Control included with Visual Studio 97 Service Pack 2 is unable to make an authenticated connection using the Username and Password properties. For more information, see the following article in the Microsoft Knowledge Base: ARTICLE-ID: Q173265 TITLE : BUG: Internet Transfer Control (SP2) Username and Password Workaround ---------- This is sample code for setting the URL property before the Username and Password properties so you won't get the error described above: Inet1.URL = "ftp://YourFTPServer" Inet1.UserName = "Username" Inet1.Password = "Password" Notice the URL property is set before the Username and Password properties. This information is also documented in the Visual Basic 5.0 Readme file. MORE INFORMATION ================ Steps to Reproduce Behavior --------------------------- 1. Start a new Standard EXE project. Form1 is added by default. 2. From the Project menu, click Components and select the Internet Transfer Control 5.0 into the project if it is not already loaded. 3. Place an Internet Transfer Control 5.0 (Inet1) on Form1 and add the following code: Private Sub Inet1_StateChanged(ByVal State As Integer) Dim vtData As Variant ' Data variable. Select Case State ' ... Other cases not shown. Case icError ' 11 ' In case of error, return ResponseCode and ' ResponseInfo. vtData = Inet1.ResponseCode & ":" & _ Inet1.ResponseInfo Case icResponseCompleted ' 12 Dim strData As String: strData = "" Dim bDone As Boolean: bDone = False ' Get first chunk. vtData = Inet1.GetChunk(1024, icString) DoEvents Do While Not bDone strData = strData & vtData ' Get next chunk. vtData = Inet1.GetChunk(1024, icString) DoEvents If Len(vtData) = 0 Then bDone = True End If Loop MsgBox strData End Select End Sub 4. Place a CommandButton (Command1) on Form1 and add the following code: Private Sub Command1_Click() Inet1.UserName = "Username" Inet1.Password = "Password" Inet1.URL = "ftp://YourFTPServer" Inet1.Execute , "DIR" End Sub 5. From the Run menu, click Start (ALT, R, S) or press the F5 key to run the program. Click the Command1 button, and you will see error described above. REFERENCES ========== Visual Basic 5.0 Readme.hlp file; search on topic: "Internet Transfer Control: Set URL Before Password and UserName" ====================================================================== Keywords : PrgCtrlsStd vb5all Technology : kbInetDev Version : WINDOWS:5.0 Platform : WINDOWS Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1997.