BcfColumnDefaultValueSourceBase(T) Class


BcfColumnDefaultValueSourceBaseT Class

The column behavior item base class for column default value sources.

Inheritance Hierarchy

SystemObject
  CalculationWorks.BusinessModel.BehaviorsBcfColumnBehaviorItemBase
    CalculationWorks.BusinessModel.BehaviorsBcfColumnDefaultValueSourceBaseT
      CalculationWorks.BusinessModel.BehaviorsBcfColumnDefaultValueFunctionT
      CalculationWorks.BusinessModel.BehaviorsBcfColumnDefaultValueSourceT

Namespace: CalculationWorks.BusinessModel.Behaviors
Assembly: CalculationWorks.BusinessModel (in CalculationWorks.BusinessModel.dll) Version: 3.0.2.0

Syntax

C++

Copy

public abstract class BcfColumnDefaultValueSourceBase<T> : BcfColumnBehaviorItemBase, 
	IBcfColumnDefaultValueSource

Public MustInherit Class BcfColumnDefaultValueSourceBase(Of T)
	Inherits BcfColumnBehaviorItemBase
	Implements IBcfColumnDefaultValueSource

generic<typename T>
public ref class BcfColumnDefaultValueSourceBase abstract : public BcfColumnBehaviorItemBase, 
	IBcfColumnDefaultValueSource

[<AbstractClassAttribute>]
type BcfColumnDefaultValueSourceBase<'T> =  
    class
        inherit BcfColumnBehaviorItemBase
        interface IBcfColumnDefaultValueSource
    end

Type Parameters

T: The value type.

The BcfColumnDefaultValueSourceBaseT type exposes the following members.

Constructors

	Name	Description
	BcfColumnDefaultValueSourceBaseT	Initializes a new instance of the BcfColumnDefaultValueSourceBaseT class

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Properties

	Name	Description
	Column	Gets the BcfColumn the item belongs to. (Inherited from BcfColumnBehaviorItemBase.)

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Methods

	Name	Description
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetDefaultValue	Gets the default value.
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnDiscard	Called when the BcfDataSet is disposed and DataSet.Behavior.CleanupOptions.Cleanup is set to true. (Inherited from BcfColumnBehaviorItemBase.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

To apply a IBcfColumnDefaultValueSource instance to a BcfColumnBehavior add it to the BcfColumnSetup.BehaviorItems.

Only one IBcfColumnDefaultValueSource instance per BcfColumnBehavior allowed.

Examples

In this example a default value source class will be created. The class return always a new Guid and cannot be changed at runtime.

public class GuidSequencer : BcfColumnDefaultValueSourceBase<Guid> {
protected override Guid GetDefaultValue() { return Guid.NewGuid(); }
}

Version Information

CalculationWorks.BusinessModel

Supported in: 3.0, 2.1, 2.0

Reference

CalculationWorks.BusinessModel.Behaviors Namespace