Create Datatypes

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Creating Data Types Programmatically

You create a data type programmatically by creating a corresponding interface inherited from IData. You should specify a number of type attributes for the interface as well as add a number of properties with a number of property attributes.

Sample:

using System;
using Composite.Data;
namespace Demo
{
    [AutoUpdateble]
    [KeyPropertyName("Id")]
    [ImmutableTypeId("{6EF1F9CC-D14B-4c63-AF4C-662089BFEDEA}")]
    [DataScope(DataScopeIdentifier.PublicName)]
    public interface IMyUser : IData
    {
        [ImmutableFieldId("{62A03F88-4A29-4182-9BCF-84080F1A2111}")]
        [StoreFieldType(PhysicalStoreFieldType.Guid)]
        Guid Id { get; set; }
        [ImmutableFieldId("{6AEEA24A-77AB-486c-AE6F-69EB224735A4}")]
        [StoreFieldType(PhysicalStoreFieldType.String, 64)]
        string Name { get; set; }
        [ImmutableFieldId("{6A085CAD-E74E-4e4b-8352-B31D9932EDCC}")]
        [StoreFieldType(PhysicalStoreFieldType.String, 64)]
        string Email { get; set; }
    }
}

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In the sample:

The ImmutableTypeId attribute specifies a unique ID for the type. The KeyPropertyName attribute specifies the name of the key property used as a key for the data type. The DataScope attribute specifies data scopes items of the data types should exist in (DataScopeIdentifier.Public and DataScopeIdentifier.Administrated). The AutoUpdate attribute has Expe automatically add and update your type. The ImmutableFieldId attribute specifies a unique ID for the property. The StoreFieldType specifies the underlying type of the property.

You can also see Data Types Using C# for more information