vb net 2010 compare strings with wildcards

When you specify a range of characters, the characters must appear in ascending sort order (A-Z or 0-100). In any other location, the hyphen identifies a range of ANSI characters. You can use the hyphen (-) either at the beginning (after an exclamation mark if one is used) or at the end of charlist to match itself. When used outside brackets, the exclamation mark matches itself. Other important rules for pattern matching include the following:Īn exclamation mark (!) at the beginning of charlist means that a match is made if any character except those in charlist are found in expression. They will be treated as literals if used through Access or DAO. It is important to note that the ANSI SQL wildcards (%) and (_) are only available with the Microsoft Access database engine and the Access OLE DB Provider. For example, matches any alphanumeric character. You can include multiple ranges within the brackets without delimiting the ranges. For example, using in pattern results in a match if the corresponding character position in expression contains any of the uppercase letters in the range A through Z. In addition to a simple list of characters enclosed in brackets, charlist can specify a range of characters by using a hyphen (-) to separate the upper and lower bounds of the range. You can use the special characters opening bracket () within a group to match itself, but you can use it outside a group as an individual character.

You can use a group of one or more characters ( charlist) enclosed in brackets () to match any single character in expression, and charlist can include almost any characters in the ANSI character set, including digits.

The following table shows the wildcard characters you can use with the Like operator and the number of digits or strings they match. Lessīuilt-in pattern matching provides a versatile tool for making string comparisons. Access for Microsoft 365 Access 2021 Access 2019 Access 2016 Access 2013 Access 2010 Access 2007 More.

Vb net 2010 compare strings with wildcards