The IsNumeric property is TRUE if the system data type referenced is an exact, numeric data type.
object.IsNumeric
object
Expression that evaluates to an object in the Applies To list
Boolean
Read-only
HRESULT GetIsNumeric(LPBOOL pRetVal);
Exact numeric data types are scaled integer values represented as strings. When defining a column using an exact numeric data type, precision and scale are specified, as in decimal(12, 4).