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WebClient.UploadString Method (Uri, String)

Uploads the specified string to the specified resource, using the POST method.

Namespace:  System.Net
Assembly:  System (in System.dll)

'Declaration
Public Function UploadString ( _
	address As Uri, _
	data As String _
) As String

Parameters

address
Type: System.Uri

The URI of the resource to receive the string. For Http resources, this URI must identify a resource that can accept a request sent with the POST method, such as a script or ASP page.

data
Type: System.String

The string to be uploaded.

Return Value

Type: System.String
A String containing the response sent by the server.

ExceptionCondition
ArgumentNullException

The address parameter is Nothing.

-or-

The data parameter is Nothing.

WebException

The URI formed by combining BaseAddress and address is invalid.

-or-

There was no response from the server hosting the resource.

Before uploading the string, this method converts it to a Byte array using the encoding specified in the Encoding property. This method blocks while the string is transmitted. To send a string and continue executing while waiting for the server's response, use one of the UploadStringAsync methods.

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.

NoteNote

This member outputs trace information when you enable network tracing in your application. For more information, see Network Tracing in the .NET Framework.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

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