Data.DB.TParam Methods

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InheritedProtected

AfterConstruction	public	Responds after the last constructor has executed.
Assign	public	Copies the Name and Value of another TParam object.
AssignField	public	Assigns the DataType, Name, and Value properties from a TField object.
AssignFieldValue	public	Assigns the DataType and Value properties from a TField object.
AssignParam	protected
AssignTo	protected
BeforeDestruction	public	Responds before the first destructor executes.
Changed	protected	Updates the collection to reflect changes to the collection item.
CheckDisposed	protected
ClassInfo	public	Returns a pointer to the run-time type information (RTTI) table for the object type.
ClassName	public	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
ClassNameIs	public	Determines whether an object is of a specific type.
ClassParent	public	Returns the type of the immediate ancestor of a class.
ClassType	public	Returns the class reference for the object's class.
CleanupInstance	public	Performs finalization on long strings, variants, and interface variables within a class.
Clear	public	Sets the Value of the parameter to NULL.
Create	public	Creates an instance of TParam and inserts it in a parameter list.
DefaultHandler	public	Provides the interface for a method that processes message records.
DefineProperties	protected	Provides an interface for a method that reads and writes otherwise unpublished data.
Destroy	public
Dispatch	public	Calls message-handling methods for the object, based on the contents of the Message parameter.
DisposeOf	public	DisposeOf forces the execution of the destructor code in an object.
Equals	public	Checks whether the current instance and the Obj parameter are equal.
FieldAddress	public	Returns the address of a published object field.
Free	public	Destroys an object and frees its associated memory, if necessary.
FreeInstance	public	Deallocates memory allocated by a previous call to the NewInstance method.
GetAsAnsiString	protected	The protected method that returns the value of the parameter as a System.AnsiString.
GetAsBCD	protected	The protected method that returns the value of the parameter as a TBcd.
GetAsBoolean	protected	The protected method that returns the value of the parameter as a Boolean.
GetAsBytes	protected	The protected method that returns the value of the field parameter as TBytes.
GetAsCurrency	protected
GetAsDataset	protected	Used by TSQLServerMethod to read TDataSet parameters.
GetAsDateTime	protected
GetAsFloat	protected
GetAsFMTBCD	protected
GetAsGuid	protected
GetAsInteger	protected
GetAsLargeInt	protected
GetAsLongWord	protected
GetAsMemo	protected
GetAsObject	protected	The protected method that returns the value of the field as a TObject.
GetAsParams	protected	Used by TSQLServerMethod to read TParams parameters.
GetAsSingle	protected
GetAsSQLTimeStamp	protected
GetAsSQLTimeStampOffset	protected
GetAsStream	protected	Used by TSQLServerMethod to read TStream parameters.
GetAsString	protected
GetAsVariant	protected	The protected method that returns the value of the parameter as a System.Variant.
GetAsWideString	protected
GetData	public	Fills the buffer with the Value of the parameter in the native format of a database field of the appropriate type.
GetDataSize	public	Returns the number of bytes needed to hold the parameter's value in the format used by the corresponding type of database field.
GetDisplayName	protected
GetDisposed	protected	Getter for the Disposed property.
GetHashCode	public	Returns an integer containing the hash code.
GetInterface	public	Retrieves a specified interface.
GetInterfaceEntry	public	Returns the entry for a specific interface implemented in a class.
GetInterfaceTable	public	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
GetIsNull	protected
GetNamePath	public	Returns a string used by the Object Inspector.
GetOwner	protected	Returns the collection to which this item belongs.
GetParamObject	protected	In case the TParam instance stores an object type value, this method returns an interface of type IParamObject from the instance's value.
HasParamObject	protected	Specifies whether the TParam instance stores a value of the given object type.
InheritsFrom	public	Determines the relationship of two object types.
InitInstance	public	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
InstanceSize	public	Returns the size in bytes of each instance of the object type.
IsEqual	protected
LoadFromFile	public	Loads the value of a BLOB parameter from the specified file.
LoadFromStream	public	Loads the value of a BLOB parameter from a stream.
MethodAddress	public	Returns the address of a class method by name.
MethodName	public	Returns the name of a class method by address.
NewInstance	public	Allocates memory for an instance of an object type and returns a pointer to that new instance.
QualifiedClassName	public	Returns the qualified name of the class.
Release	public
SafeCallException	public	Handles exceptions in methods declared using the safecall calling convention.
SetAsAnsiString	protected
SetAsBCD	protected
SetAsBlob	protected
SetAsBoolean	protected
SetAsByte	protected
SetAsBytes	protected	The protected method that sets the value of the field parameter with the given TBytes.
SetAsCurrency	protected
SetAsDataSet	protected	Used by TSQLServerMethod to set TDataSet parameters.
SetAsDate	protected
SetAsDateTime	protected
SetAsFloat	protected
SetAsFMTBCD	protected
SetAsGuid	protected
SetAsInteger	protected
SetAsLargeInt	protected
SetAsLongWord	protected
SetAsMemo	protected
SetAsObject	protected	Used by TSQLServerMethod to set TObject parameters.
SetAsParams	protected	Used by TSQLServerMethod to set TParams parameters.
SetAsShortInt	protected
SetAsSingle	protected
SetAsSmallInt	protected
SetAsSQLTimeStamp	protected
SetAsSQLTimeStampOffset	protected
SetAsStream	protected	Used by TSQLServerMethod to set TStream parameters.
SetAsString	protected
SetAsTime	protected
SetAsVariant	protected
SetAsWideString	protected
SetAsWord	protected
SetBlobData	public	Copies a new value for the parameter in physical database format from Buffer.
SetCollection	protected	Sets the value of the Collection property.
SetData	public	Copies a new value for the parameter in physical database format from Buffer.
SetDataSet	public	Used by TSqlServerMethod component to set DataSet Parameter.
SetDataType	protected
SetDisplayName	protected	Sets the name of the collection item as it appears in the collection editor.
SetIndex	protected	Moves the collection item to a specified position in the parent collection.
SetObjectValue	public	Sets the value of the TParam instance to the given object, using the specified ownership flag.
SetParams	public
SetStream	public	Sets the value of the TParam instance to the given stream, using the specified ownership flag.
SetText	protected
ToString	public	Returns a string containing the class name.
UnitName	public	Returns the name of the unit where the class is defined.
UnitScope	public	Returns the class's unit scope.