OracleDataReader.IsDBNull(Int32) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets a value indicating whether the column contains non-existent or missing values.
public:
virtual bool IsDBNull(int i);public:
override bool IsDBNull(int i);public bool IsDBNull (int i);public override bool IsDBNull (int i);abstract member IsDBNull : int -> bool
override this.IsDBNull : int -> booloverride this.IsDBNull : int -> boolPublic Function IsDBNull (i As Integer) As BooleanPublic Overrides Function IsDBNull (i As Integer) As BooleanParameters
- i
- Int32
The zero-based column ordinal.
Returns
true if the specified column value is equivalent to DBNull; otherwise, false.
Implements
Remarks
To avoid raising an error, call this method to check for null column values before calling the typed Get methods (for example, GetByte, GetChar, and so on).
Applies to
Bekerjasama dengan kami di GitHub
Sumber untuk kandungan ini boleh didapati di GitHub, di mana anda juga boleh mencipta dan menyemak isu dan menarik permintaan. Untuk maklumat lanjut, lihat panduan penyumbang kami.
