This exception is thrown when incorrectly attempting to create or access a DataRelation object. For example, if you attempt to remove a DataRelation when a corresponding ForeignKeyConstraint exists on a table, or if you try to specify DataRelation parent-and-child columns with incompatible data types or in tables from different DataSet objects, this exception is thrown.

public class InvalidConstraintException : DataException {

// Public Constructors

   public InvalidConstraintException( );  

   public InvalidConstraintException(string s);  

// Protected Constructors

   protected InvalidConstraintException(System.Runtime.Serialization.SerializationInfo info,

        System.Runtime.Serialization.StreamingContext context);



System.Object System.Exception(System.Runtime.Serialization.ISerializable) System.SystemException DataException InvalidConstraintException

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