C# Signature:

    [DllImport("kernel32.dll",CharSet=CharSet.Unicode, SetLastError=true)]
    static unsafe extern int CompareStringEx(String strLocale, int flags, String str1, int count1, string str2, int count2, char* version, char* reserved, int param );
[DllImport("kernel32.dll")]
static extern int CompareString(uint Locale, uint dwCmpFlags, string lpString1,
   int cchCount1, string lpString2, int cchCount2);

User-Defined Types:

None.

VB Signature:

    Public Const LOCALE_NAME_USER_DEFAULT As String = Nothing
    <Flags()>
    Public Enum EComparationFlags As UInt32
    Zero = &H0
    NORM_IGNORECASE = &H1 'ignore case
    NORM_IGNORENONSPACE = &H2 'ignore nonspacing chars
    NORM_IGNORESYMBOLS = &H4 'ignore symbols
    LINGUISTIC_IGNORECASE = &H10 'linguistically appropriate 'ignore case'
    LINGUISTIC_IGNOREDIACRITIC = &H20 'linguistically appropriate 'ignore nonspace'
    NORM_IGNOREKANATYPE = &H10000 'ignore kanatype
    NORM_IGNOREWIDTH = &H20000 'ignore width
    NORM_LINGUISTIC_CASING = &H8000000 'use linguistic rules for casing
    SORT_STRINGSORT = &H1000 'use string sort method
    SORT_DIGITSASNUMBERS = &H8 'use digits as numbers sort method
    End Enum
    Public Enum EComparationResult As Int32
    CSTR_LESS_THAN = 1 'string 1 less than string 2
    CSTR_EQUAL = 2 'string 1 equal to string 2
    CSTR_GREATER_THAN = 3 'string 1 greater than string 2
    End Enum
    Public Declare Unicode Function CompareStringEx Lib "kernel32" (ByVal strLocaleName As String, ByVal dwComparationFlags As EComparationFlags, ByVal str1 As String, ByVal iLength1 As Int32, ByVal str2 As String, ByVal iLength2 As Int32, ByVal pVersionInformation As IntPtr, ByVal pReserved As IntPtr, ByVal lParam As IntPtr) As EComparationResult

User-Defined Types:

None.

Alternative Managed API:

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CompareInfo.Compare() functions.

Notes:

None.

Tips & Tricks:

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Sample Code:

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Alternative Managed API:

System.String.Compare

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