IsDBNull Method

IDataRecord.IsDBNull Method (Int32)


Return whether the specified field is set to null.

Namespace:   System.Data
Assembly:  System.Data (in System.Data.dll)

bool IsDBNull(
	int i


Type: System.Int32

The index of the field to find.

Return Value

Type: System.Boolean

true if the specified field is set to null; otherwise, false.

Exception Condition

The index passed was outside the range of 0 through FieldCount.

Call this method to see if there are null column values before calling the typed get methods (for example, GetByte, GetChar, and so on) to avoid raising an error.

.NET Framework
Available since 1.1
Return to top
© 2015 Microsoft