The VB.NET String Compare function is use to compare two String Objects.

System.String.Compare(String str1,String str2, Boolean ) As Integer

It returns an Integer indication lexical relationship between the two comprehends

Parameters:

String str1 : Parameter String

String str2 : Parameter String

Boolean True/False Indication to check the String with case sensitive or without case sensitive

Returns:

Integer : returns less than zero, zero or greater than zero.

Less than zero : str1 is less than str2

zero : str1 is equal to str2

Greater than zero : str1 is grater than str2

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
        Dim str1 As String
        Dim str2 As String

        str1 = "vb.net"
        str2 = "VB.NET"

        Dim result As Integer

        result = String.Compare(str1, str2)
        MsgBox(result)

        result = String.Compare(str1, str2, True)
        MsgBox(result)
    End Sub
End Class