How to: Upload a File in Visual Basic

The UploadFile method can be used to upload a file and store it to a remote location. If the ShowUI parameter is set to True, a dialog box is displayed that shows the progress of the upload and allows users to cancel the operation.

To upload a file

Use the UploadFile method to upload a file, specifying the source file's location and the target directory location as a string or URI (Uniform Resource Identifier).This example uploads the file Order.txt to http://www.cohowinery.com/uploads.aspx.
```
My.Computer.Network.UploadFile(
  "C:\My Documents\Order.txt",
  "http://www.cohowinery.com/upload.aspx")
```

To upload a file and show the progress of the operation

Use the UploadFile method to upload a file, specifying the source file's location and the target directory location as a string or URI. This example uploads the file Order.txt to http://www.cohowinery.com/uploads.aspx without supplying a user name or password, shows the progress of the upload, and has a time-out interval of 500 milliseconds.
```
My.Computer.Network.UploadFile(
  "C:\My Documents\Order.txt",
  "http://www.cohowinery.com/upload.aspx", "", "", True, 500)
```

To upload a file, supplying a user name and password

Use the UploadFile method to upload a file, specifying the source file's location and the target directory location as a string or URI, and specifying the user name and the password. This example uploads the file Order.txt to http://www.cohowinery.com/uploads.aspx, supplying the user name anonymous and a blank password.
```
My.Computer.Network.UploadFile(
  "C:\My Documents\Order.txt",
  "http://www.cohowinery.com/upload.aspx", "anonymous", "")
```

Robust Programming

The following conditions may throw an exception:

The local file path is not valid (ArgumentException).
Authentication failed (SecurityException).
The connection timed out (TimeoutException).

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Last updated on 2021-09-15