Reads an entry of the specified type with the specified id from the space. 
            Blocks up to the specified timeout (if any) only if a matching entry exists and it is 
            necessary to wait for transactional state to settle.
            
 Declaration Syntax
 Declaration Syntax| C# | Visual Basic | Visual C++ | J# | 
T ReadIfExistsById<T>( Object id, Object routing, ITransaction tx, long timeout )
Function ReadIfExistsById(Of T) ( _ id As Object, _ routing As Object, _ tx As ITransaction, _ timeout As Long _ ) As T
generic<typename T> T ReadIfExistsById( Object^ id, Object^ routing, ITransaction^ tx, long long timeout )
 Generic Template Parameters
 Generic Template Parameters- T
- Type of requested entry.
 Parameters
 Parameters- id (Object)
- ID of requested entry.
- routing (Object)
- Value to select partition in clustered environment.
- tx (ITransaction)
- The transaction which this operation will participate in.
- timeout (Int64)
- The maximum time to wait for a transactionally proper matching object.
 Return Value
 Return ValueResult entry from space (null if not found).
