SqlCeDataReader.IsDBNull Method
Note: This namespace, class, or member is supported only in version 1.1 of the .NET Framework.
Gets a value indicating whether the column contains nonexistent or missing values.
Public Overridable Function IsDBNull( _
ByVal ordinal As Integer _) As Boolean Implements IDataRecord.IsDBNull
[C#]
public virtual bool IsDBNull(intordinal);
[C++]
public: virtual bool IsDBNull(intordinal);
[JScript]
public function IsDBNull(
ordinal : int) : Boolean;
Parameters
- ordinal
The zero-based column ordinal.
Return Value
true if the specified column value is equivalent to DBNull; otherwise, false.
Implements
Remarks
Call this method to check for null column values before calling the typed get methods (for example, GetByte, GetGuid, and so on) to avoid raising an error.
Requirements
Platforms: .NET Compact Framework
.NET Framework Security:
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries From Partially Trusted Code
See Also
SqlCeDataReader Class | SqlCeDataReader Members | System.Data.SqlServerCe Namespace