The string that defines the begining boundary of our multipart transfer as defined in the w3c specs. This method also sets the Content and Ending boundaries as defined by the w3c specs.

public string BeginBoundary { get; set; }

Public Property BeginBoundary As String
	Get
	Set

public:
property String^ BeginBoundary {
	String^ get ();
	void set (String^ value);
}

member BeginBoundary : string with get, set