本文整理汇总了C#中EntityType.FindPrimaryKey方法的典型用法代码示例。如果您正苦于以下问题：C# EntityType.FindPrimaryKey方法的具体用法？C# EntityType.FindPrimaryKey怎么用？C# EntityType.FindPrimaryKey使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类EntityType的用法示例。
在下文中一共展示了EntityType.FindPrimaryKey方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetCompatiblePrimaryKeyProperties
private static IReadOnlyList<Property> GetCompatiblePrimaryKeyProperties(EntityType dependentEntityType, EntityType principalEntityType, IReadOnlyList<Property> propertiesToReference)
{
var dependentPkProperties = dependentEntityType.FindPrimaryKey()?.Properties;
if ((dependentPkProperties != null)
&& ForeignKey.AreCompatible(
propertiesToReference,
dependentPkProperties,
principalEntityType,
dependentEntityType,
shouldThrow: false))
{
return dependentPkProperties;
}
return null;
}示例2: GetCompatiblePrimaryKeyProperties
private IReadOnlyList<Property> GetCompatiblePrimaryKeyProperties(EntityType entityType, IReadOnlyList<Property> propertiesToReference)
{
var dependentPkProperties = entityType.FindPrimaryKey()?.Properties;
if (dependentPkProperties != null
&& Property.AreCompatible(propertiesToReference, dependentPkProperties))
{
return dependentPkProperties;
}
return null;
}示例3: Can_get_set_reset_and_clear_primary_key
public void Can_get_set_reset_and_clear_primary_key()
{
var entityType = new EntityType(typeof(Customer), new Model());
var idProperty = entityType.GetOrAddProperty(Customer.IdProperty);
var nameProperty = entityType.GetOrAddProperty(Customer.NameProperty);
var key1 = entityType.GetOrSetPrimaryKey(new[] { idProperty, nameProperty });
Assert.NotNull(key1);
Assert.Same(key1, entityType.GetOrSetPrimaryKey(new[] { idProperty, nameProperty }));
Assert.Same(key1, entityType.GetPrimaryKey());
Assert.Same(key1, entityType.FindPrimaryKey());
Assert.Same(key1, entityType.Keys.Single());
var key2 = entityType.GetOrSetPrimaryKey(idProperty);
Assert.NotNull(key2);
Assert.NotEqual(key1, key2);
Assert.Same(key2, entityType.GetOrSetPrimaryKey(idProperty));
Assert.Same(key2, entityType.GetPrimaryKey());
Assert.Same(key2, entityType.FindPrimaryKey());
Assert.Equal(2, entityType.Keys.Count);
Assert.Same(key1, entityType.GetKey(key1.Properties));
Assert.Same(key2, entityType.GetKey(key2.Properties));
Assert.Null(entityType.GetOrSetPrimaryKey((Property)null));
Assert.Null(entityType.FindPrimaryKey());
Assert.Equal(2, entityType.Keys.Count);
Assert.Null(entityType.GetOrSetPrimaryKey(new Property[0]));
Assert.Null(entityType.FindPrimaryKey());
Assert.Equal(2, entityType.Keys.Count);
Assert.Equal(
Strings.EntityRequiresKey(typeof(Customer).FullName),
Assert.Throws<ModelItemNotFoundException>(() => entityType.GetPrimaryKey()).Message);
}