I am working in Umbraco cloud.

The members can have 2 address details published on the web site with the following code.

@foreach (var member in ApplicationContext.Current.Services.MemberService.GetMembersByMemberType("activeMembers"))
    {

      var memberStateDataType = Umbraco.DataTypeService.GetDataTypeDefinitionByName("Active Members - Practice 1 State - Dropdown");
      var memberStateDictionary = Umbraco.DataTypeService.GetPreValuesCollectionByDataTypeId(memberStateDataType.Id).PreValuesAsDictionary;

      var memberStateDataType2 = Umbraco.DataTypeService.GetDataTypeDefinitionByName("Active Members - Practice 2 State - Dropdown");
      var memberStateDictionary2 = Umbraco.DataTypeService.GetPreValuesCollectionByDataTypeId(memberStateDataType2.Id).PreValuesAsDictionary;



      var prac1name = member.GetValue("practice1Name");
      var prac1ad = member.GetValue("practice1Address");
      var prac1pc = member.GetValue("practice1Postcode");
      var prac1ph = member.GetValue("practice1Phone");
      var prac1fax = member.GetValue("practice1Fax");
      var prac2name = member.GetValue("practice2Name");
      var prac2ad = member.GetValue("practice2Address");
      var prac2pc = member.GetValue("practice2Postcode");
      var prac2ph = member.GetValue("practice2Phone");
      var prac2fax = member.GetValue("practice2Fax");


    var stateProperty1 = member.Properties.FirstOrDefault(p => p.PropertyType.Alias == "practice1State");
    var selectedPreValueId1 = int.Parse((string)stateProperty1.Value);
    var selectedPreValue1 = memberStateDictionary.FirstOrDefault(preValue => preValue.Value.Id == selectedPreValueId1);
    // next line is the state e.g. "NSW"
    var selectedState1 = selectedPreValue1.Value.Value;


   var stateProperty2 = member.Properties.FirstOrDefault(p => p.PropertyType.Alias == "practice2State");
    var selectedPreValueId2 = int.Parse((string)stateProperty2.Value);
  var selectedPreValue2 = memberStateDictionary2.FirstOrDefault(preValue => preValue.Value.Id == selectedPreValueId2);
    // next line is the state e.g. "NSW"
    var selectedState2 = selectedPreValue2.Value.Value;

This displays perfectly if the member has 2 address and "Active Members - Practice 2 State - Dropdown" has a value. However not all the members have 2 addresses. If the drop down menu "Active Members - Practice 2 State - Dropdown" does not have a value I get the yellow screen.

I have tried @if (selectedState2 != null ) but i still get the same yellow screen.

What am I missing?