Create(TCollection)

Initializes a new instance of the TDbParameter class.

Destroy

Represents the destructor of the TDbParameter class.

AsAnsiString

Specifies the value of the parameter when it represents an ansi string field.

AsBCD

Specifies the value of the parameter when it represents a binary-coded decimal (BCD) field with less than 4 decimal places or 20 significant digits.

AsBlob

Specifies the value of the parameter when it represents a binary large object (BLOB) field.

AsBoolean

Specifies the value of the parameter when it represents a boolean field.

AsByte

Specifies the value of the parameter when it represents a byte field.

AsBytes

Returns the value of the field parameter as TBytes.

AsCurrency

Specifies the value of the parameter when it represents a field of type Currency.

AsDate

Specifies the value of the parameter when it represents a date field.

AsDateTime

Specifies the value of the parameter when it represents a date-time field.

AsFloat

Specifies the value of the parameter when it represents a float field.

AsFMTBCD

Specifies the value of the parameter when it represents a binary-coded decimal (BCD) field with more than 4 decimal places or 20 significant digits.

AsInteger

Specifies the value of the parameter when it represents an integer field.

AsLargeInt

Specifies the value of the parameter when it represents a largeint field.

AsLongWord

Specifies the value of the parameter when it represents a longword field.

AsMemo

Specifies the value of the parameter when it represents a memo field.

AsShortInt

Specifies the value of the parameter when it represents a shortint field.

AsSingle

Specifies the value of the parameter when it represents a single field.

AsSmallInt

Specifies the value of the parameter when it represents a small integer field.

AsSQLTimeStamp

Specifies the value of the parameter when it represents an SQL timestamp field.

AsSQLTimeStampOffset

Represents property AsSQLTimeStampOffset.

AsString

Specifies the value of the parameter when it represents a string field.

AsTime

Specifies the value of the parameter when it represents a time field.

AsWideString

Specifies the value of the parameter when it represents a widestring field.

AsWord

Specifies the value of the parameter when it represents a word field.

Data

Represents property Data.

DataType

Indicates the type of field whose value the parameter represents.

Direction

Gets or sets a value that indicates whether the parameter is input-only, output-only, bidirectional, or a stored procedure return value parameter.

IsNull

Indicates whether the value assigned to the parameter is NULL (blank).

IsNullable

Gets or sets a value that indicates whether the parameter accepts null values. IsNullable is not used to validate the parameter’s value and will not prevent sending or receiving a null value when executing a command.

Name

Specifies the name of the parameter.

ParameterIntf

Provides direct access to the ADO.Net DbParameter object.

Parameters

Provides a reference to the TDbParameters container.

ParamRefName

Represents property ParamRefName.

Precision

Specifies the number of digits allowed for a numeric parameter.

Scale

Specifies the number of decimal places for the parameter.

Size

Specifies the size of a string type parameter.

SourceColumn

Gets or sets the name of the source column mapped to the DataSet and used for loading or returning the Value.

SourceColumnNullMapping

Sets or gets a value which indicates whether the source column is nullable. This allows DbCommandBuilder to correctly generate Update statements for nullable columns.

SourceVersion

Gets or sets the DataRowVersion to use when you load Value.

Text

Represents the value of the parameter as a string.

Value

Represents the value of the parameter as a Variant.

Assign(TPersistent)

Copies the properties and value of one TDbParameter object to another.

AssignField(TField)

Assigns the DataType, Name, and Value properties from a TField object.

AssignFieldValue(TField,Variant)

Assigns the DataType and Value properties from a TField object.

AssignParam(TParam)

Represents method AssignParam(TParam).

AssignParameter(TDbParameter)

Represents method AssignParameter(TDbParameter).

AssignTo(TPersistent)

Represents method AssignTo(TPersistent).

Clear

Sets the Value of the parameter to NULL.

DoGetParameterIntf

Represents method DoGetParameterIntf.

GetAsAnsiString

Represents method GetAsAnsiString.

GetAsBCD

Represents method GetAsBCD.

GetAsBoolean

Represents method GetAsBoolean.

GetAsBytes

Represents method GetAsBytes.

GetAsCurrency

Represents method GetAsCurrency.

GetAsDateTime

Represents method GetAsDateTime.

GetAsFloat

Represents method GetAsFloat.

GetAsFMTBCD

Represents method GetAsFMTBCD.

GetAsInteger

Represents method GetAsInteger.

GetAsLargeInt

Represents method GetAsLargeInt.

GetAsLongWord

Represents method GetAsLongWord.

GetAsMemo

Represents method GetAsMemo.

GetAsSingle

Represents method GetAsSingle.

GetAsSQLTimeStamp

Represents method GetAsSQLTimeStamp.

GetAsSQLTimeStampOffset

Represents method GetAsSQLTimeStampOffset.

GetAsString

Represents method GetAsString.

GetAsVariant

Represents method GetAsVariant.

GetAsWideString

Represents method GetAsWideString.

GetData(TValueBuffer)

Fills the buffer with the Value of the parameter in the native format of a database field of the appropriate type.

GetDataSize

Returns the number of bytes needed to hold the parameter's value in the format used by the corresponding type of database field.

GetDataType

Represents method GetDataType.

GetDisplayName

Represents method GetDisplayName.

GetIsNull

Represents method GetIsNull.

GetName

Represents method GetName.

GetParameters

Represents method GetParameters.

GetParamObject

Represents method GetParamObject.

HasParamObject(TClass)

Represents method HasParamObject(TClass).

IsEqual(TDbParameter)

Represents method IsEqual(TDbParameter).

LoadFromFile(string,TDataType)

Loads the value of a BLOB parameter from the specified file.

LoadFromStream(TStream,TDataType)

Loads the value of a BLOB parameter from a stream.

ResetDbType

Resets the DbType property to its original settings.

SetAsAnsiString(AnsiString)

Represents method SetAsAnsiString(AnsiString).

SetAsBCD(Currency)

Represents method SetAsBCD(Currency).

SetAsBlob(TBlobData)

Represents method SetAsBlob(TBlobData).

SetAsBoolean(Boolean)

Represents method SetAsBoolean(Boolean).

SetAsByte(LongInt)

Represents method SetAsByte(LongInt).

SetAsBytes(TArray)

Represents method SetAsBytes(TArray).

SetAsCurrency(Currency)

Represents method SetAsCurrency(Currency).

SetAsDate(TDateTime)

Represents method SetAsDate(TDateTime).

SetAsDateTime(TDateTime)

Represents method SetAsDateTime(TDateTime).

SetAsFloat(Double)

Represents method SetAsFloat(Double).

SetAsFMTBCD(TBcd)

Represents method SetAsFMTBCD(TBcd).

SetAsInteger(Longint)

Represents method SetAsInteger(Longint).

SetAsLargeInt(LargeInt)

Represents method SetAsLargeInt(LargeInt).

SetAsLongWord(LongWord)

Represents method SetAsLongWord(LongWord).

SetAsMemo(string)

Represents method SetAsMemo(string).

SetAsShortInt(LongInt)

Represents method SetAsShortInt(LongInt).

SetAsSingle(Single)

Represents method SetAsSingle(Single).

SetAsSmallInt(LongInt)

Represents method SetAsSmallInt(LongInt).

SetAsSQLTimeStamp(TSQLTimeStamp)

Represents method SetAsSQLTimeStamp(TSQLTimeStamp).

SetAsSQLTimeStampOffset(TSQLTimeStampOffset)

Represents method SetAsSQLTimeStampOffset(TSQLTimeStampOffset).

SetAsString(string)

Represents method SetAsString(string).

SetAsTime(TDateTime)

Represents method SetAsTime(TDateTime).

SetAsVariant(Variant)

Represents method SetAsVariant(Variant).

SetAsWideString(string)

Represents method SetAsWideString(string).

SetAsWord(LongInt)

Represents method SetAsWord(LongInt).

SetBlobData(TValueBuffer,Integer)

Copies a new value for the parameter in physical database format from Buffer.

SetData(TValueBuffer)

Copies a new value for the parameter in physical database format from Buffer.

SetDataType(TDataType)

Represents method SetDataType(TDataType).

SetDbData(OleVariant)

Represents method SetDbData(OleVariant).

SetName(String)

Represents method SetName(String).

SetText(string)

Represents method SetText(string).