System.Data.OleDb Namespace   OleDbDataReader Class

---

Checks whether the column contains non-existent or missing values.

[ VB ]
NotOverridable Public Function IsDBNull ( _
   ByVal index As Integer _
) As Boolean

[ C# ]
public bool IsDBNull (
   int index
);

[ C++ ]
public: __sealed bool IsDBNull (
   int index
);

[ JScript ]
public function IsDBNull (
   index : int
) : Boolean

index

The zero-based column ordinal.

This method returns only a boolean value: true if the specified column is equivalent to DBNull; otherwise, false.

The property is read only with no default value.

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

OleDbDataReader Members

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