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Convert.IsDBNull Method

Returns an indication whether the specified object is of type DBNull.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static bool IsDBNull(
	Object value
)

Parameters

value
Type: System.Object
An object.

Return Value

Type: System.Boolean
true if value is of type DBNull; otherwise, false.

The IsDBNull method tests whether the value parameter is equal to DBNull.Value. It is equivalent to the following code:


return DBNull.Value.Equals(value);


NoteNote:

DBNull.Value is used to indicate a value that is missing. It is not equivalent to null or to String.Empty.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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