חיוג מטלפון IP מ C#

[מלא]

כיום אני מחייג מטלפון IP דרך אקסס עם הקוד הזה

איך מחייגים מ C#?

Const SW_SHOW = 1
Const SW_SHOWMAXIMIZED = 3

Public Declare Function ShellExecute Lib "Shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, _
                                  ByVal lpOperation As String, ByVal lpFile As String, _
                                  ByVal lpParameters As String, ByVal lpDirectory As String, _
                                  ByVal nShowCmd As Long) As Long
                                  
Function CallToNumber()

Dim urladdress As String
Dim strString As String

urladdress = "http://www.tchumim.com/" & number

Dim xmlDoc As MSXML2.DOMDocument60
Set xmlDoc = New MSXML2.DOMDocument60

xmlDoc.Async = True
xmlDoc.Load (urladdress)

End Function

[dovid]

string urladdress = "http://www.tchumim.com/";
async void CallToNumber(string number)
{
    using (var wc = new WebClient())
       await wc.DownloadDataTaskAsync(urladdress + number);
}