How to add a composite unique key using EF 6 Fluent Api?

Question

I have a table (Id, name, itemst, otherproperties), Id is the primary key and I want a unique composite key (name, itemst). How can I add this using code first either by flu

Answer 1

Here is an example showing how to create a composite unique key via fluent API. The composite key consists of ProjectId and SectionOdKey.

public class Table
{
    int Id{set;get;}    
    int ProjectId {set;get;}
    string SectionOdKey{set;get;}
}

public class TableMap : EntityTypeConfiguration
{
   this.Property(t => t.ProjectId).HasColumnName("ProjectId")
                .HasColumnAnnotation("Index", new IndexAnnotation(new IndexAttribute("IX_ProjectSectionOd", 1){IsUnique = true}));
   this.Property(t => t.SectionOdKey).HasColumnName("SectionOdKey")
                .HasColumnAnnotation("Index", new IndexAnnotation(new IndexAttribute("IX_ProjectSectionOd", 2){IsUnique = true}));
}

                                                        

              
                
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