WebClient.UploadValues Method (Uri, NameValueCollection)
Uploads the specified name/value collection to the resource identified by the specified URI.
Assembly: System (in System.dll)
'Declaration Public Function UploadValues ( _ address As Uri, _ data As NameValueCollection _ ) As Byte()
- Type: System.Uri
The URI of the resource to receive the collection.
- Type: System.Collections.Specialized.NameValueCollection
The NameValueCollection to send to the resource.
The address parameter is Nothing.
The data parameter is Nothing.
The URI formed by combining BaseAddress, and address is invalid.
data is Nothing.
There was no response from the server hosting the resource.
An error occurred while opening the stream.
The Content-type header is not Nothing or "application/x-www-form-urlencoded".
The UploadValues method sends a NameValueCollection to a server. This method blocks while uploading the data. To continue executing while waiting for the server's response, use one of the UploadValuesAsync methods.
If the underlying request is not understood by the server, the underlying protocol classes determine what occurs. Typically, a WebException is thrown with the Status property set to indicate the error.
If the Content-type header is Nothing, the UploadValues method sets it to "application/x-www-form-urlencoded".
If the BaseAddress property is not an empty string ("") and address does not contain an absolute URI, address must be a relative URI that is combined with BaseAddress to form the absolute URI of the requested data. If the QueryString property is not an empty string, it is appended to address.
This method uses the STOR command to upload an FTP resource. For an HTTP resource, the POST method is used.
This member outputs trace information when you enable network tracing in your application. For more information, see Network Tracing in the .NET Framework.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.