C# Convert IsDBNull

Description

Convert IsDBNull returns an indication whether the specified object is of type DBNull.

Syntax

Convert.IsDBNull has the following syntax.


public static bool IsDBNull(
  Object value
)

Parameters

Convert.IsDBNull has the following parameters.

  • value - An object.

Returns

Convert.IsDBNull method returns true if value is of type DBNull; otherwise, false.

Example

The following example uses a SqlDataReader object to retrieve survey data from a database.


//ww w  . j av  a 2 s .c  o m
using System;
public class MainClass{
  public static void Main(String[] argv){  
    System.Console.WriteLine(Convert.IsDBNull('a'));
  }
}

The code above generates the following result.





















Home »
  C# Tutorial »
    System »




Array
BitConverter
Boolean
Byte
Char
Console
ConsoleKeyInfo
Convert
DateTime
DateTimeOffset
Decimal
Double
Enum
Environment
Exception
Guid
Int16
Int32
Int64
Math
OperatingSystem
Random
SByte
Single
String
StringComparer
TimeSpan
TimeZone
TimeZoneInfo
Tuple
Tuple
Tuple
Type
UInt16
UInt32
UInt64
Uri
Version