Vb Net Option Compare Binary

Checking if two strings are equal

Comparing ii strings for equality can exist tricky. The result of var1 = var2 where Var1 and var2 but differ in the use of capitals depends on the Option Compare Setting. This is risky concern indeed. Setting Option Compare is a module level decision effecting statement level results. If a module doesn't include an Option Compare argument, the default text comparison method is Binary (terms divers below):

"abc" = "ABC" »

Fake

(Compare Binary)

However, this is not ever what one wants. If for example in Excel one wants to check if a workbook with a certain name is open up so i wants

"MyWorkbook.xls" = "myworkbook.xls" »

Truthful

(Compare text)

The way to ensure the required 'compare text'  beliefs is by using StrComp part as below.

(StrComp(Str1, Str2, vbTextCompare) = 0)

e.g.

(StrComp("abc", "ABC", vbTextCompare) = 0) »

True

(StrComp("abc", "abc", vbTextCompare) = 0)  »

Truthful

(StrComp("abc", "ab", vbTextCompare) = 0)   »

False

Note: The prototype on the right shows an example Code VBA add together-in back up for VBA String procedures.

Compare Binary results in cord comparisons based on a sort order derived from the internal binary representations of the characters. In Microsoft Windows, sort social club is determined by the lawmaking page. A typical binary sort social club is shown in the following example:

            A < B < E < Z < a < b < due east < z < À < Ê < Ø < à < ê < ø          

Compare Text results in string comparisons based on a case-insensitive text sort order adamant by your system'south locale. When the same characters are sorted using Selection Compare Text, the post-obit text sort order is produced:

            (A=a) < (À= à) < (B=b) < (Due east=e) < (Ê= ê) < (Ø = ø) < (Z=z)          

Option Compare Database tin but exist used within Microsoft Access. This results in cord comparisons based on the sort order adamant by the locale ID of the database where the string comparisons occur.

StrComp( string1 , string2 [, compare ])

The StrComp function syntax has these named arguments:

Part	Description
string1	Required. Whatever valid string expression.
string2	Required. Any valid string expression.
compare	Optional. Specifies the type of string comparison. If the compare argument is Cipher, an error occurs. If compare is omitted, the Choice Compare setting determines the type of comparing.

Abiding	Value	Description
vbUseCompareOption	-one	Performs a comparison using the setting of the Option Compare argument.
vbBinaryCompare	0	Performs a binary comparison.
vbTextCompare	1	Performs a textual comparison.
vbDatabaseCompare	two	Microsoft Access merely. Performs a comparison based on data in your database.

Return Values

The StrComp function has the following return values:

If	StrComp returns
string1 is less than string2	-1
string1 is equal to string2	0
string1 is greater than string2	1
string1 or string2 is Null	Null

CODE VBA - 4TOPS   Copyright 1997-2021

Vb Net Option Compare Binary,

Source: https://www.codevba.com/visual-basic-source-code/vb-string/checking_if_two_strings_are_equal.htm

Posted by: shillingeverecten.blogspot.com

Share this post