Set EF6 Code First strings fluently to nvarchar(max)

Set EF6 Code First strings fluently to nvarchar(max)

By default, Entity Framework 6 Code First will map string properties to nvarchar(4000) in the database. To change this to nvarchar(max), you can use the HasMaxLength method in your fluent mapping configuration.

Here's an example of how to map string properties to nvarchar(max) in Entity Framework 6 Code First:

public class MyContext : DbContext { public DbSet<MyEntity> MyEntities { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity<MyEntity>() .Property(e => e.MyStringProperty) .IsUnicode() .HasMaxLength(null); } } public class MyEntity { public int Id { get; set; } public string MyStringProperty { get; set; } }

In this example, we define a MyEntity class that has a string property named MyStringProperty. We then use the HasMaxLength method in the OnModelCreating method of the MyContext class to map the MyStringProperty to nvarchar(max).

Note that passing null to the HasMaxLength method is equivalent to setting the maximum length to nvarchar(max).

With this configuration, Entity Framework will map all string properties in the MyEntity class to nvarchar(max) in the database.

Examples

  1. "Entity Framework 6 Code First fluent API set string length to max"

    • Description: Find out how to use the Entity Framework 6 fluent API to set the length of string properties to the maximum (nvarchar(max)).
    modelBuilder.Entity<YourEntity>() .Property(e => e.YourStringProperty) .HasMaxLength(int.MaxValue);

  2. "EF6 Code First fluent API nvarchar(max) for all string properties"

    • Description: Learn how to set the default length of all string properties to nvarchar(max) using the fluent API in Entity Framework 6.
    modelBuilder.Properties<string>() .Configure(p => p.HasColumnType("nvarchar(max)"));

  3. "Entity Framework 6 Code First set specific string property to nvarchar(max)"

    • Description: Explore how to selectively set the length of a specific string property to nvarchar(max) using the fluent API in EF6.
    modelBuilder.Entity<YourEntity>() .Property(e => e.YourStringProperty) .HasColumnType("nvarchar(max)");

  4. "EF6 Code First fluent API set global string length to nvarchar(max)"

    • Description: Understand how to configure Entity Framework 6 to globally set the length of all string properties to nvarchar(max) using the fluent API.
    modelBuilder.Properties<string>() .Configure(p => p.HasColumnType("nvarchar(max)"));

  5. "Entity Framework 6 Code First set string length dynamically"

    • Description: Learn how to dynamically set the length of string properties based on conditions or configurations using the fluent API in EF6.
    int dynamicLength = GetDynamicLength(); // Your custom logic to determine length modelBuilder.Entity<YourEntity>() .Property(e => e.YourStringProperty) .HasMaxLength(dynamicLength);

  6. "EF6 Code First set all string properties to nvarchar(max) by default"

    • Description: Find out how to configure Entity Framework 6 to use nvarchar(max) as the default length for all string properties without specifying it individually.
    modelBuilder.Properties<string>() .Configure(p => p.HasColumnType("nvarchar(max)"));

  7. "Entity Framework 6 Code First set string length with data annotations"

    • Description: Explore how to use data annotations to set the length of string properties to nvarchar(max) in Entity Framework 6 Code First.
    [MaxLength] public string YourStringProperty { get; set; }

  8. "EF6 Code First fluent API set default string length for specific entity"

    • Description: Learn how to set the default length for all string properties within a specific entity using the fluent API in Entity Framework 6.
    modelBuilder.Entity<YourEntity>() .Properties<string>() .Configure(p => p.HasColumnType("nvarchar(max)"));

  9. "Entity Framework 6 Code First set string length globally"

    • Description: Understand how to set the default length of all string properties globally across all entities using the fluent API in EF6.
    modelBuilder.Properties<string>() .Configure(p => p.HasColumnType("nvarchar(max)"));

  10. "EF6 Code First fluent API set string length conditionally"

    • Description: Explore how to conditionally set the length of string properties based on specific criteria or configurations using the fluent API in Entity Framework 6.
    int conditionalLength = GetConditionalLength(); // Your custom logic to determine length modelBuilder.Entity<YourEntity>() .Property(e => e.YourStringProperty) .HasMaxLength(conditionalLength);

More Tags

android-studio-3.0 mean pcap.net ghost4j in-clause slide odoo-12 google-kubernetes-engine git-log css-grid

More C# Questions

More Weather Calculators

More Trees & Forestry Calculators

More Dog Calculators

More Mixtures and solutions Calculators