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  • Terry Clancy 204 posts 944 karma points
    Dec 28, 2015 @ 08:52
    Terry Clancy
    0

    NullReference Exception adding PropertyType to a Member Type

    Hi all,

    I am getting the "NullReferenceException was unhandled by user code" exception shown at the bottom of this post when attempting to add PropertyType to a Member Type. Here is my code and the line causing the exception is marked with <<<<<<<<<<<<< below.

    Any assistance solving this would be VERY much appreciated.

    IDataTypeService  umbDataTypeService = AppHelpers.UmbServices().DataTypeService;
var allDataTypeDefinitions = umbDataTypeService.GetAllDataTypeDefinitions();
IDataTypeDefinition labelDataTypeDefinition = allDataTypeDefinitions.FirstOrDefault(dt => dt.PropertyEditorAlias == "Umbraco.Textbox");
PropertyType resetGUIDPropertyType = new PropertyType(labelDataTypeDefinition)

    {

    Name = "resetGUID",

    Alias = "resetguid",

    Key = Guid.NewGuid(),

    PropertyEditorAlias = "resetguid",

    SortOrder = 0,

    Description = "The rain in spain"

    };
MemberType customMemberType = (MemberType) umbMemberService.GetById(customIMemberId);
customMemberType.AddPropertyType(resetGUIDPropertyType);    // <<<<<<<<<<<< EXCEPTION HAPPENS HERE

    And here is the exception:

    System.NullReferenceException was unhandled by user code
    HResult=-2147467261 Message=Object reference not set to an instance of an object. Source=TeraTastic04 StackTrace: at TeraTastic04.TTExtensions.RegisterStartupEvents.AddCustomMemberType() in C:\Clancy\ATeraTastic\Dev\TeraTastic04\TeraTastic04\TTExtensions\RegisterStartupEvents.cs:line 279 at TeraTastic04.TTExtensions.RegisterStartupEvents.ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) in C:\Clancy\ATeraTastic\Dev\TeraTastic04\TeraTastic04\TTExtensions\RegisterStartupEvents.cs:line 88 at Umbraco.Core.ApplicationEventHandler.OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) at Umbraco.Core.CoreBootManager.

    Thanks

    Terry Clancy

    ClanceZ

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  • Terry Clancy 204 posts 944 karma points
    Dec 28, 2015 @ 18:55
    Terry Clancy
    100

    Never mind - I found my problem. Here is the corrected code with changes as indicated by comments

    IDataTypeService  umbDataTypeService = AppHelpers.UmbServices().DataTypeService;
var umbMemberTypeService = AppHelpers.UmbServices().MemberTypeService;    //  Had to add this line
var allDataTypeDefinitions = umbDataTypeService.GetAllDataTypeDefinitions();
IDataTypeDefinition labelDataTypeDefinition = allDataTypeDefinitions.FirstOrDefault(dt => dt.PropertyEditorAlias == "Umbraco.Textbox");
PropertyType resetGUIDPropertyType = new PropertyType(labelDataTypeDefinition)

    {

    Name = "resetGUID",

    Alias = "resetguid",

    Key = Guid.NewGuid(),

    PropertyEditorAlias = "resetguid",

    SortOrder = 0,

    Description = "The rain in spain"

    };
//  MemberType customMemberType = (MemberType) umbMemberService.GetById(customIMemberId);   //  ERROR  this line was and is  wrong, resulted in customMemberType being null
MemberType customMemberType = (MemberType)umbMemberTypeService.GetAll(customIMemberTypeId).FirstOrDefault();  //  This is the corrected line
customMemberType.AddPropertyType(resetGUIDPropertyType);

    Hope this helps

    Terry Clancy

    ClanceZ

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  • Charles Afford 1163 posts 1709 karma points
    Dec 30, 2015 @ 20:42
    Charles Afford
    0

    That looks good, sorry no one was able to reply. Please keep asking questions :)

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