C#

if (Thread.CurrentPrincipal.IsInRole(@"MYDOMAIN\MyApplicationAdministrators")
{
    // User is an administrator, apply admin rights - whatever they may be
}
else if (Thread.CurrentPrincipal.IsInRole(@"MYDOMAIN\MyApplicationMangers")
{
     // User is a manager, apply manager rights - whatever they may be
}

// Only members of Admin role can call this method
[PrincipalPermission(SecurityAction.Demand, Role = "MYDOMAIN\MyApplicationAdministrators")]
static void CheckAdministrator()
{
    Console.WriteLine("User is an administrator");
}

064                     CloseVideoSource();  

//get total received frame at 1 second tick
private void timer1_Tick(object sender, EventArgs e)
{
    label2.Text = "Device running... " + videoSource.FramesReceived.ToString() + " FPS";
}

//
// Image format: B G R A B G ...
//               0 1 2 3 4 5 ...

Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
System.Drawing.Imaging.BitmapData imageData = image.LockBits(
    rectangle,
    System.Drawing.Imaging.ImageLockMode.ReadWrite,
    image.PixelFormat
);

IntPtr ptr = imageData.Scan0;

int byteCount = Math.Abs(imageData.Stride) * image.Height;
byte[] rgbValues = new byte[byteCount];

System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, byteCount);

for (int rgbIndex = 3; rgbIndex < rgbValues.Length; rgbIndex += 4)
{
    // Do something with
    //rgbValues[rgbIndex - 3], // (Blue)
    //rgbValues[rgbIndex - 2], // (Green)
    //rgbValues[rgbIndex - 1], // (Red)
    //rgbValues[rgbIndex - 0], // (Alpha)
}

System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr, byteCount);

image.UnlockBits(imageData);

<system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="BasicHTTP" sendTimeout="00:10:00" closeTimeout="00:05:00"  openTimeout="00:1:00" receiveTimeout="00:05:00"
              allowCookies="true" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="2147483647"
           maxBufferPoolSize="2147483647"  maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8"
             useDefaultWebProxy="true" >
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647"
                        maxNameTableCharCount="2147483647" />
          <security mode="TransportWithMessageCredential">
            <transport clientCredentialType="Ntlm" proxyCredentialType="None" />
            <message clientCredentialType="UserName" algorithmSuite="Default" />
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>
    <services>

      <service name="F2F.Service1" behaviorConfiguration="F2F.Service1Behavior">

        <!-- Service Endpoints -->
        <endpoint address="" binding="basicHttpBinding" contract="F2F.IService1">
          <!--
              Upon deployment, the following identity element should be removed or replaced to reflect the
              identity under which the deployed service runs.  If removed, WCF will infer an appropriate identity
              automatically.
          -->
          <identity>
            <dns value="localhost"/>
          </identity>
        </endpoint>
        <!--<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>-->
      </service>
    </services>

    <!--<serviceHostingEnvironment>
      <baseAddressPrefixFilters>
        <add prefix="http://localhost:51340/"/>
      </baseAddressPrefixFilters>
    </serviceHostingEnvironment>-->

    <!--<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />-->
    <behaviors>
      <serviceBehaviors>
        <behavior name="F2F.Service1Behavior">
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

//Read the information from the fields and pass it via Ajax to a webmethod.
//JQuery will block the raising of the click event of the button.
//1.	Get all the parameters from the form.
var val1 = document.getElementById('clientid1').value;
var val2 = document.getElementById('clientid2').value;
var val3 = document.getElementById('clientid3').selectedIndex;
var val4 = document.getElementById('clientid4').options[index].innerHTML;
var val5 = document.getElementById('clientid5').innerHTML;

//2. put the parameters in a key/value pair like string
var datapropt = "{'val1':'" + val1 + "'";
datapropt += ", 'val2':'" + val2 + "'";
datapropt += ", 'val3':'" + val3 + "'";
datapropt += ", 'val4':'" + val4 + "'}";

//create function that will call the server side WebMethod
$.ajax({
	type: "POST",
	url: "StaticWebMethods.asmx/TheWebMethodName",
	data: datapropt,
	//cache: false,
	contentType: "application/json; charset=utf-8",
	dataType: "json",
	success: function (result) {
	//alert(result + "");
	location.reload(true);
	}
});

[WebMethod]
public static bool TheWebMethodName(int val1, string val2, string val3, string val4){
//method body here
}