ConstraintException Class

.NET Framework (current version)

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Represents the exception that is thrown when attempting an action that violates a constraint.

Namespace: System.Data
Assembly: System.Data (in System.Data.dll)

Inheritance Hierarchy

System.Object
System.Exception
System.SystemException
System.Data.DataException
System.Data.ConstraintException
System.Data.PropertyConstraintException

Syntax

C++

[<SerializableAttribute>]
type ConstraintException = 
    class
        inherit DataException
    end

Constructors

	Name	Description
	ConstraintException()	Initializes a new instance of the ConstraintException class. This is the default constructor.
	ConstraintException(SerializationInfo, StreamingContext)	Initializes a new instance of the ConstraintException class using the specified serialization and stream context.
	ConstraintException(String)	Initializes a new instance of the ConstraintException class with the specified string.
	ConstraintException(String, Exception)	Initializes a new instance of the ConstraintException class using the specified string and inner exception.

Properties

	Name	Description
	Data	Gets a collection of key/value pairs that provide additional user-defined information about the exception.(Inherited from Exception.)
	HelpLink	Gets or sets a link to the help file associated with this exception.(Inherited from Exception.)
	HResult	Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.(Inherited from Exception.)
	InnerException	Gets the Exception instance that caused the current exception.(Inherited from Exception.)
	Message	Gets a message that describes the current exception.(Inherited from Exception.)
	Source	Gets or sets the name of the application or the object that causes the error.(Inherited from Exception.)
	StackTrace	Gets a string representation of the immediate frames on the call stack.(Inherited from Exception.)
	TargetSite	Gets the method that throws the current exception.(Inherited from Exception.)

Methods

	Name	Description
	Equals(Object)	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.)
	GetBaseException()	When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.(Inherited from Exception.)
	GetHashCode()	Serves as the default hash function. (Inherited from Object.)
	GetObjectData(SerializationInfo, StreamingContext)	When overridden in a derived class, sets the SerializationInfo with information about the exception.(Inherited from Exception.)
	GetType()	Gets the runtime type of the current instance.(Inherited from Exception.)
	MemberwiseClone()	Creates a shallow copy of the current Object.(Inherited from Object.)
	ToString()	Creates and returns a string representation of the current exception.(Inherited from Exception.)

Events

	Name	Description
	SerializeObjectState	Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.(Inherited from Exception.)

Remarks

Tips: Relax or turn off constraints in your DataSets. You can use the EnforceConstraints property to temporarily turn off constraints while filling tables in a DataSet object.

Make sure you are not trying to assign a value to a primary key field where the primary key already exists in the data table. If the primary key exists, this exception is thrown.

Clear datasets before loading them from view state. If there is data in the dataset when you load it, this exception may be thrown.

Version Information

.NET Framework
Available since 1.1

Thread Safety

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.