Strings.StrComp(String, String, CompareMethod) Method


Returns -1, 0, or 1, based on the result of a string comparison.

public static int StrComp (string? String1, string? String2, Microsoft.VisualBasic.CompareMethod Compare = Microsoft.VisualBasic.CompareMethod.Binary);
public static int StrComp (string String1, string String2, Microsoft.VisualBasic.CompareMethod Compare = Microsoft.VisualBasic.CompareMethod.Binary);
static member StrComp : string * string * Microsoft.VisualBasic.CompareMethod -> int
Public Function StrComp (String1 As String, String2 As String, Optional Compare As CompareMethod = Microsoft.VisualBasic.CompareMethod.Binary) As Integer



Required. Any valid String expression.


Required. Any valid String expression.


Optional. Specifies the type of string comparison. If Compare is omitted, the Option Compare setting determines the type of comparison.


One of the following values:

IfStrComp returns
String1 sorts ahead of String2-1
String1 is equal to String20
String1 sorts after String21


Compare value is not valid.


This example uses the StrComp function to return the results of a string comparison.

' Defines variables.
Dim testStr1 As String = "ABCD"
Dim testStr2 As String = "abcd"
Dim testComp As Integer
' The two strings sort equally. Returns 0.
testComp = StrComp(testStr1, testStr2, CompareMethod.Text)
' testStr1 sorts before testStr2. Returns -1.
testComp = StrComp(testStr1, testStr2, CompareMethod.Binary)
' testStr2 sorts after testStr1. Returns 1.
testComp = StrComp(testStr2, testStr1, CompareMethod.Binary)


The strings are compared by alphanumeric sort values beginning with the first character. For further information on binary comparisons, textual comparisons, and sort order, see Option Compare Statement.

The Compare argument settings are:

Constant Description
Binary Performs a binary comparison, based on a sort order derived from the internal binary representations of the characters.
Text Performs a text comparison, based on a case-insensitive text sort order determined by your system's LocaleID value.

Applies to

See also