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Fonctions de maths et de corde
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Fonctions mathématiques

Dans la table suivante, des fonctions mathématiques populaires sont récapitulées. Noter en outre que certaines fonctions n'exigent pas les maths. préfixe.

Function Use
Math.Abs() Returns the absolute value.
Math.Abs(-10) returns 10.
Math.Ceiling() Returns an integer that is greater than or equal to a number.
Math.Ceiling(5.333) returns 6.
Fix() Returns the integer portion of a number.
Fix(5.3333) returns 5.
Math.Floor() Returns an integer that is less than or equal to a number.
Fix(5.3333) returns 5.
Int() Returns the integer portion of a number.
Int(5.3333) returns 5.
Math.Max() Returns the larger of two numbers.
Math.Max(5,7) returns 7.
Math.Min() Returns the smaller of two numbers.
Math.Min(5,7) returns 5.
Math.Pow() Returns a number raised to a power.
Math.Pow(12,2) returns 144.
Rnd() Returns a random number between 0 and 1. Used in conjunction with Randomizestatement to initialize the random number generator.
Math.Round() Rounds a number to a specified number of decimal places. Rounds up on .5.
Math.Round(1.1234567,5) returns 1.12346.
Math.Sign() Returns the sign of a number. Returns -1 if negative and 1 if positive.
Math.Sign(-5) returns -1.
Math.Sqrt() Returns the square root of a positive number.
Math.Sqrt(144) returns 12.


Plusieurs fonctions intégrées de corde effectuent les modifications de chaîne de caractères pour augmenter la concaténation simple avec « et » l'opérateur et ces fonctions sont récapitulés dans la table suivante.

Function Use
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.




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Keywords: Math and String Functions in VB.NET, visual basic functions, vb net functions, sql server functions, visual basic string, vb net string, asp net string, asp functions, javascript functions, perl functions, vb6 functions, sql functions, javascript string, vbscript string, c++ string


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