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VBA Functions

VBA Functions. Functions Usually accept arguments Perform a calculation using the argument Return a value or string. VBA Functions. Consider: Rad(50) Rad( ) is a function that converts degrees to radians The number 50 is the argument

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VBA Functions

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  1. VBA Functions Functions • Usually accept arguments • Perform a calculation using the argument • Return a value or string

  2. VBA Functions • Consider: Rad(50) • Rad( ) is a function that converts degrees to radians • The number 50 is the argument • The function multiplies the argument by p, then divides by 180. • The function returns the value 0.8727 • Used in code: MyNum = Rad(50) stores the value 0.8727 in the variable MyNum

  3. Custom Functions • You can write your own functions in VBA • Function FuncName(arguments) • Code defines how the arguments are used. • This function accepts text as “AnyName” • It returns a text string with“Hi “ appended to the stringpassed in the argument. • Note: the name of the function must appear in the code Function SayHi(AnyName) SayHi = “Hi, “ & AnyName End Function

  4. Calling Functions from Macros • This macro stores the name “Fred” in the variable mName. Sub AddHi( ) mName = “Fred” mOut = SayHi(mName) MsgBox mOut End Sub • It passes the name to “SayHi” • Note: the passed argumentneed not have the samename as the function • The macro then uses MsgBox to display theconverted string Function SayHi(AnyName) SayHi = “Hi, “ & AnyName End Function

  5. Finding data with VBA • Vlookup(Value, Array, Column, Close) • Searches down the first column of Array for a match to Value. • Returns the value in the cell in Column for the same row with the match for Value. • If Close = true, it finds the best match;If Close = false, it only accepts an exact match. • VBA doesn’t have this function!

  6. Finding Data in VBA Application.WorksheetFunction.VLookup( ) • Uses Excel function, but returns data to VBA • Cell ranges must look like: Range(“A3:A15”) Range(Array).Find(Value) • Returns a range variable defining where in Array it found that value • Use .Offset(0,Column).Formula to find

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