OleDbDataReader.IsDBNull(Int32) Method
Definition
Important
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Gets a value that indicates whether the column contains nonexistent or missing values.
public:
override bool IsDBNull(int ordinal);public:
virtual bool IsDBNull(int ordinal);public override bool IsDBNull(int ordinal);public bool IsDBNull(int ordinal);override this.IsDBNull : int -> boolabstract member IsDBNull : int -> bool
override this.IsDBNull : int -> boolPublic Overrides Function IsDBNull (ordinal As Integer) As BooleanPublic Function IsDBNull (ordinal As Integer) As BooleanParameters
- ordinal
- Int32
The zero-based column ordinal.
Returns
true if the specified column value is equivalent to DBNull; otherwise, false.
Implements
Remarks
Call this method to look for null column values before calling the typed get methods (for example, GetByte, GetChar, and so on) to avoid raising an error.
