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NullIf(string a, string b) Method

Returns a null (Nothing in Visual Basic) reference if the two specified parameters are equal (or if either are null (Nothing in Visual Basic)); otherwise, returns the first parameter.

Syntax

public static string NullIf(string a, string b)

Parameters

a
Type: string

The first parameter.

b
Type: string

The second parameter.

Returns

Null (Nothing in Visual Basic) reference if the two specified parameters are equal (or if either are null (Nothing in Visual Basic)); otherwise, the first parameter.