Firebird ADO.NET Provider SDK Documentation - v1.7

FbConfiguration.SetReserveSpace Method 

Configure the database to fill data pages when inserting new records, or reserve 20% of each page for later record deltas;

[Visual Basic]
Public Sub SetReserveSpace( _
   ByVal reserveSpace As Boolean _
)
[C#]
public void SetReserveSpace(
   bool reserveSpace
);

Parameters

reserveSpace
true to enable database to reserve space; or false for disable it.

See Also

FbConfiguration Class | FirebirdSql.Data.Firebird.Services Namespace