When overridden in a descendant class, gets or sets a value that indicates whether to buffer the data written to the Internet resource.
Assembly: System.Net (in System.Net.dll)
When is true, the data is buffered in memory so it can be written more efficiently to the Internet resource in larger chunks. This property provides support for determining upload progress.
The property is supported by both the browser and client HTTP stack. However on the browser stack, the property can only be set to true and will throw NotSupportedException if set to false.
The property affects when the callback from BeginGetRequestStream method is called. When the property is true, the callback is raised immediately before any data is sent. When the property is false, the callback is raised only after the headers are sent and then all writes to the stream are immediately sent to the server.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.