String Functions in .NET

String Functions in .NET

Several built-in string functions perform string manipulations to augment simple concatenation with the "&" operator.

Function in ASP.NET

Asc() Returns the character code of the first character of a string.

Asc("A") returns 65.

Chr() Returns the display character of a character code.

Chr(65) returns "A".

GetChar() Returns the character at a specified position in a string, counting from 1.

GetChar("This is a string", 7) returns "s".

InStr() Returns the starting position in a string of a substring, counting from 1.

InStr("This is a string", "string") returns 11.

InStrRev() Returns the starting position in a string of a substring, searching from the end of the string.

InStr("This is a string", "string") returns 11.

LCase() Returns the lower-case conversion of a string.

LCase("THIS IS A STRING") returns "this is a string".

Left() Returns the left-most specified number of characters of a string.

Left("This is a string", 4) returns "This".

Len() Returns the length of a string.

Len("This is a string") returns 16.

LTrim() Removes any leading spaces from a string.

LTrim(" This is a string") returns "This is a string".

Mid() Returns a substring from a string, specified as the starting position (counting from 1) and the number of characters.

Mid("This is a string", 6, 4) returns "is a".

Replace() Replaces all occurences of a substring in a string.

Replace("This is a string", " s", " longer s") returns "This are a longer string" (replaces an "s" preceded by a blank space).

Right() Returns the right-most specified number of characters of a string.

Right("This is a string", 6) returns "string".

RTrim() Removes any trailing spaces from a string.

RTrim("This is a string ") returns "This is a string".

Str() Returns the string equivalent of a number.

Str(100) returns "100".

Space() Fills a string with a given number of spaces.
"This" & Space(5) & "string" returns "This string".

StrComp() Compares two strings. Return values are 0 (strings are equal), 1 (first string has the greater value), or -1 (second string has the greater value) based on sorting sequence.

StrComp("This is a string", "This string") returns -1.

StrReverse() Reverses the characters in a string.

StrReverse("This is a string") returns "gnirts a si sihT".

Trim() Removes any leading and trailing spaces from a string.

Trim(" This is a string ") returns "This is a string".

UCase() Returns the upper-case conversion of a string.

UCase("This is a string") returns "THIS IS A STRING".

Val() Converts a numeric expression to a number.

Val( (1 + 2 + 3)^2 ) returns 36.