C#

si = new ServiceControllerInfo(new ServiceController("myservice"));
      si.Controller.Start();/*this line throw me an exception telling that :Cannot open myservice service on computer '.'. i have tried alot but it wont solve! */
    si.Controller.WaitForStatus(ServiceControllerStatus.Running);

<MainframeField>
    <MainframeKeyword>POLNO</MainframeKeyword>
    <MainframeKeywordDescription>Policy Number</MainframeKeywordDescription>
    <BusinessEntityDetails>
      <Namespace></Namespace>
      <EntityName>HealthPlanDetails</EntityName>
      <PropertyName>PolicyNumber</PropertyName>
    </BusinessEntityDetails>
    <MaximumLength>2</MaximumLength>
    <DataType>STRING</DataType>
    <IsRequired>TRUE</IsRequired>
    <TransformationDetails>
      <MainframeTransformationEntity></MainframeTransformationEntity>
      <Namespace></Namespace>
      <MethodToCall></MethodToCall>
      <Inputs>
        <Input></Input>
        <Input></Input>
      </Inputs>
    </TransformationDetails>
  </MainframeField>

public static string BuildMainframeString(ApplicationEntity applicationEntity)
       {
           //Load XML from file
           XDocument xmlMainframeOutput = XDocument.Load(@"C:\_XsdGen\Gen\Mainframexml.xml");
           var mainframeOutputs = from mainframeField in xmlMainframeOutput.Descendants("MainframeField")
                                  let mainframeKeyword = mainframeField.Element("MainframeKeyword")
                                  let mainframeKeywordDescription = mainframeField.Element("MainframeKeywordDescription")
                                  let businessEntityProperty = mainframeField.Element("BusinessEntityProperty")
                                  let maximumLength = mainframeField.Element("MaximumLength")
                                  let dataType = mainframeField.Element("DataType")
                                  let isRequired = mainframeField.Element("IsRequired")

                                  let businessEntityDetails = mainframeField.Element("BusinessEntityDetails")
                                  let businessEntityNamespace = businessEntityDetails.Element("Namespace")
                                  let businessEntityName = businessEntityDetails.Element("EntityName")
                                  let businessEntityPropertyName = businessEntityDetails.Element("PropertyName")

                                  let mainframeTransformationDetails = mainframeField.Element("TransformationDetails")
                                  let mainframeTransformationEntity = mainframeTransformationDetails.Element("MainframeTransformationEntity")

                                  let mainframeTransformationNamespace = mainframeTransformationDetails.Element("Namespace")
                                  let mainframeTransformationEntityMethodToCall = mainframeTransformationDetails.Element("MethodToCall")
                                  let inputs = mainframeTransformationDetails.Descendants("Input")

                                  select new
                                  {
                                      MainframeKeyword = mainframeKeyword.Value,
                                      MainframeKeywordDescription = mainframeKeywordDescription.Value,
                                      BusinessEntityNamespace = businessEntityNamespace.Value,
                                      BusinessEntityName = businessEntityName.Value,
                                      BuisnessEntityPropertyName = businessEntityPropertyName.Value,
                                      MaximumLength = maximumLength.Value,
                                      DataType = dataType.Value,
                                      IsRequired = isRequired.Value,
                                      MainframeTransformationEntity = mainframeTransformationEntity.Value,

                                      MainframeTransformationNamespace = mainframeTransformationNamespace.Value,
                                      MainframeTransformationMethodToCall = mainframeTransformationEntityMethodToCall.Value,
                                      Inputs = (from input in inputs
                                                select input.Value).ToList<string>()
                                  };
           StringBuilder mainframeOutputString = new StringBuilder();

           foreach (var mainframeField in mainframeOutputs)
           {
               string businessEntityName = mainframeField.BusinessEntityName;
               string businessEntityNamespace = mainframeField.BusinessEntityNamespace;
               string businessEntityPropertyName = mainframeField.BuisnessEntityPropertyName;

               string mainframeTransformationEntityName = mainframeField.MainframeTransformationEntity;
               string mainframeTransformationMethodToCall = mainframeField.MainframeTransformationMethodToCall;


               if (businessEntityName.Length > 0)
               {
                   Type businessType = Type.GetType(BUSINESS_ENTITY_CLASS_PATH + businessEntityName);
                   PropertyInfo pi = businessType.GetType().GetProperty(businessEntityPropertyName);
                   mainframeOutputString.Append(mainframeField.MainframeKeyword);
                   mainframeOutputString.Append("=");
                   mainframeOutputString.Append(pi.GetValue(businessType, null));
                   mainframeOutputString.Append(";");
               }
               else
               {
                   Type mainframeType = Type.GetType(MAINFRAME_TRANFORMATION_CLASS_PATH + mainframeTransformationEntityName);
                   MethodInfo mi = mainframeType.GetMethod(mainframeTransformationMethodToCall);
                   mainframeOutputString.Append(mainframeField.MainframeKeyword);
                   mainframeOutputString.Append("=");
                   mainframeOutputString.Append(mi.Invoke(mainframeType, null));
                   mainframeOutputString.Append(";");

               }

           }