UploadValuesAsync(System.Uri,System.Collections.Specialized.NameValueCollection)

Uploads the data in the specified name/value collection to the resource identified by the specified URI. This method does not block the calling thread.

Syntax

public void UploadValuesAsync (Uri address, System.Collections.Specialized.NameValueCollection data)

Parameters

address
The URI of the resource to receive the collection. This URI must identify a resource that can accept a request sent with the default method. See remarks.
data
The System.Collections.Specialized.NameValueCollection to send to the resource.

Remarks

This method sends a string to a resource. The string is sent asynchronously using thread resources that are automatically allocated from the thread pool. Before uploading the string, this method converts it to a byte array using the encoding specified in the WebClient.Encoding property. To receive notification when the string upload completes, you can add an event handler to the WebClient.UploadStringCompleted event.

This method does not block the calling thread while the string is being sent. To send a string and block while waiting for the server's response, use one of the erload:System.Net.WebClient.UploadString methods.

Asynchronous operations that have not completed can be canceled using the WebClient.CancelAsync method.

If the WebClient.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 WebClient.BaseAddress to form the absolute URI of the requested data. If the WebClient.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.

Note:

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

Requirements

Namespace: System.Net
Assembly: System (in System.dll)
Assembly Versions: 2.0.0.0, 4.0.0.0