Imports System
Imports System.Net
Imports System.IO

Public Sub GetCustomers()
    Dim myUri As New Uri("http://localhost/readydesk/API/default.aspx?key=your key here&action=get_customers&cid=*") 
    If myUri.Scheme = myUri.UriSchemeHttp Then 
        Dim myRequest As HttpWebRequest = HttpWebRequest.Create(myUri) 
        myRequest.Method = WebRequestMethods.Http.Get 

        Dim myResponse As HttpWebResponse = myRequest.GetResponse() 
        If myResponse.StatusCode = HttpStatusCode.OK Then 

            Dim reader As New StreamReader(myResponse.GetResponseStream()) 
            Dim responseData As String = reader.ReadToEnd() 
            myResponse.Close() 

            If responseData <> "" And Not IsNothing(responseData) Then 
                Console.WriteLine(responseData) 
            End If 
        End If 
    End If 
End Sub

using  System;
using  System.Net;
using  System.IO; 

public void GetCustomers()
    Uri myUri = new Uri("http://localhost/readydesk/API/default.aspx?key=your key here&action=get_customers&cid=*"); 
    if (myUri.Scheme == myUri.UriSchemeHttp) 
    { 
        HttpWebRequest myRequest = HttpWebRequest.Create(myUri); 
        myRequest.Method = WebRequestMethods.Http.Get; 
        HttpWebResponse myResponse = myRequest.GetResponse(); 

        if (myResponse.StatusCode == HttpStatusCode.OK) 
        { 
            StreamReader reader = new StreamReader(myResponse.GetResponseStream()); 
            string responseData = reader.ReadToEnd(); 
            myResponse.Close(); 

            if (!string.IsNullOrEmpty(responseData) & (responseData != null)) 
            { 
                Console.WriteLine(responseData); 
            } 
        } 
    }
}

function  GetCustomers(){
    $fp = fsockopen("localhost", 80, $errno, $errstr); 
    if (!$fp)  
    { 
        echo "$errstr ($errno)<br />\n"; 
    }  
    else  
    { 
        $out = "GET /readydesk/API/default.aspx?key=your key here&action=get_customers&cid=* HTTP/1.0\r\n"; 
        $out = $out . "Host: localhost\r\n"; 
        $out = $out . "Connection: Close\r\n\r\n"; 

        fputs($fp, $out); 
        while (!feof($fp))  
        { 
            $responseData .= fgets($fp, 1024); 
        } 
        fclose($fp); 
             
        if($responseData != "" && $responseData != null) 
        { 
            echo $responseData; 
        } 
    }
}

function GetCustomers(){
    varvar xmlh = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Msxml2.XMLHTTP") 
    var myRequest = "http://localhost/readydesk/API/default.aspx?key=your key here&action=get_customers&cid=*"

    xmlh.onreadystatechange = CallBack 
    xmlh.open("GET",myRequest,true); 
    xmlh.send(null); 
}
function CallBack(){ 
    if(xmlh.readyState == 4) 
    { 
        var responseData = xmlh.responseText; 
         
        if(responseData != "") 
        { 
            alert(responseData) 
        } 
    }
}