I have upgraded a Visual Studio 2010 solution targeting .Net 4 to Visual Studio 2012 - Express Web.
For some reason I cannot run my tests and I get the following error:
MSTestAdapter could not discover the test because the classic mode helper is not available. If a TestSettings file has been selected, unselect it and try again.
UPDATED:
My VS 2010 solution contained the following files:
- Local.testsettings
- SolutionName.vsmdi
- TraceAndTestImpact.testsettings
After upgrading the project to VS 2012 the files above were kept as part of the solution.
To fix the issue:
- Remove all 3 files from the solution
- Delete all 3 files from the solution folder
- Close the solution in VS12 and reopen it
Daily Web and Coding Tips
Saturday 22 September 2012
Sunday 2 September 2012
Entity Framework 5: auto generated GUID as primary key
If you are using Entity Framework 5 - Code First and want to create an auto generated GUID as primary key, you have two options.
Consider the following POCO class:
Decorate your Primary Key with DatabaseGenerated / DatabaseGenerationOption.Identity.
2) Fluent API
In your DbContext class, override the OnModelCreating method and add the following line:
Consider the following POCO class:
public class Album { public Guid ID { get; set; } public DateTime DateCreated { get; set; } }1) Data Annotations
Decorate your Primary Key with DatabaseGenerated / DatabaseGenerationOption.Identity.
[DatabaseGenerated(DatabaseGenerationOption.Identity)] public Guid ID { get; set; }Note: you can also use the "Key" attribute, but since the name of my property is ID Entity Framework will automatically detect that this field is a primary key.
2) Fluent API
In your DbContext class, override the OnModelCreating method and add the following line:
protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity<Album>().Property(p => p.ID).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity); }
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