MDSError

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Exception raised for errors when reading or writing an in-memory dataset.

Declaration

Source position: memds.pp line 54

Inheritance

Description

MDSError is an Exception type raised when an error occurs while reading or writing values for an in-memory dataset. MDSError is raised in the TMemDataset.RaiseError method and uses messages defined in resource strings in the implementation for the unit, including:

• Fieldtype of Field "%s" not supported
• Bookmark %d not found
• Error in data stream at position %d
• Wrong data stream marker at position %d. Got %d, expected %d'
• Filename must not be empty

An MDSError exception will be raised when a field definition uses a data type not supported in TMemDataset. The exception will be raised for the following field types:

• ftADT
• ftCursor
• ftDataSet
• ftDBaseOle
• ftFmtMemo
• ftGraphic
• ftIDispatch
• ftInterface
• ftOraBlob
• ftOraClob
• ftParadoxOle
• ftReference
• ftTimeStamp
• ftTypedBinary
• ftVariant
• ftUnknown

See also