![]() With the LastName property, we have specified the name as LName i.e. using the 0-Argument constructor, so in this case, it will create the database table column with the same name as the Property name. With the FirstName property, we have not provided the string name i.e. As you can see, we have specified the Column Attribute with the FirstName and LastName properties. Let us modify the Student Entity class as follows. Let us understand Column Data Annotation Attribute in Entity Framework Code First Approach with an example. Syntax to use Column Attribute:, )]Įxample to use Column Attribute: Examples to understand Column Data Annotation Attribute in Entity Framework: It returns the database provider-specific data type of the column the property is mapped to. TypeName: Gets or sets the database provider-specific data type of the column the property is mapped to.Order: Gets or sets the zero-based order of the column the property is mapped to.Name: Gets the name of the column the property is mapped to.The meaning of the properties are as follows: ![]() Again, this Column attribute has three properties. The 0-Argument constructor will create the database column with the same name as the property name while the other overloaded constructor which takes the string name as a parameter will create the database table column with the passed name. Now, if you go to the definition of Column Attribute, then you will see the following.Īs you can see in the above image, this class has two constructors. As per the default conventions in Entity Framework, it creates the database table column with the same name and the same order as the property names in the model class. The Column Data Annotation Attribute in Entity Framework overrides the default convention. That means it represents the database column that a property is mapped to. ![]() The Column Data Annotation Attribute can be applied to one or more properties of a domain entity to configure the corresponding database column name, column order, and column data type. Column Data Annotation Attribute in Entity Framework Code First Please read our previous article where we discussed Table Data Annotation Attribute in Entity Framework Code First Approach with Examples. In this article, I am going to discuss Column Data Annotation Attribute in Entity Framework Code First Approach with Examples. īack to: Entity Framework Tutorials For Begineers and Professionals Column Data Annotation Attribute in Entity Framework.Code-Based Migration in Entity Framework Code First.Automated Database Migration in Entity Framework Code-First.Seed Data in Entity Framework Code-First.Cascade Delete in Entity Framework Code First Approach.Stored Procedures in Entity Framework Code-First.Existing Database using Entity Framework Code First Approach.Many-to-Many Relationships in Entity Framework Fluent API.One-to-Many Relationships in Entity Framework Fluent API.One-to-One Relationships in Entity Framework Fluent API.Property Configurations using Entity Framework Fluent API.Entity Configurations using Entity Framework Fluent API.Fluent API Configurations in Entity Framework.Concurrenc圜heck Attribute in Entity Framework.TimeStamp Attribute in Entity Framework.DatabaseGenerated Attribute in Entity Framework.StringLength Attribute in Entity Framework.MaxLength and MinLength Attribute in Entity Framework.NotMapped Attribute in Entity Framework. ![]() InverseProperty Attribute in Entity Framework.ForeignKey Attribute in Entity Framework.Data Annotation Attributes in Entity Framework.Configure Domain Classes in Entity Framework.Database Initialization Strategies in Entity Framework Code-First.Database Initialization in Entity Framework Code First.Default Code-First Conventions in Entity Framework.Logging Database Commands in Entity Framework.DbEntityEntry Class in Entity Framework.Bulk Insert, Update and Delete in Entity Framework.Asynchronous Programming with Entity Framework.Saving Disconnected Entity in Entity Framework.Disconnected Entities in Entity Framework.Lazy Loading vs Eager Loading in Entity Framework.LINQ to Entities Queries in Entity Framework.Relationships Between Entities in Entity Framework.Introduction to Entity Framework Database First Approach.Data Structures and Algorithms Tutorials.
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