sum of multiline textbox values

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Dear peter,

iam new beginer in this so i want to creat my simple project so plz help me
dont close this article.
plz give me a idea code solution
i trying below code but i have facing problem in use of multiple brackets

int sum = textBox1.Lines.Sum(line => int.Parse(new String(line.
Where(x => Char.IsDigit(x)).ToArray())));

if i entered in multiline textbox1 like below
15-A.
15-B.
{[2-A
2-B]3.
5-C}2.
8-D

TOTAL = 72

I WANT SUM OF TEXTBOX1 IN TEXTBOX2 WHEN I CLICK SUM BUTTON
TOTAL SHOULD BE 72

Posted 1-Jul-14 20:57pm

cadsolution

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DamithSL 2-Jul-14 3:01am

how you get answer as 72 from above data?

cadsolution 2-Jul-14 3:14am

15-A
15-A IS 30
{[2-A
2-B]3
5-C}2.
MEANS FIRST (2-A + 2-B) * 3 TIMES = I.E 12
AGAIN BIG BRACKET (5-C .IE 12+5-C)*2 TIMES = 34
LAST 8-D

FINAL SUM IS = 72

George Jonsson 2-Jul-14 3:40am

Maybe you should update your question with the rules of your calculation.
For me it is not clear how 15 - A = 30 (or did I misunderstand?)

You should probably look into Regular Expressions for parsing the data in the textbox.

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OriginalGriff · Answer 1 · 2014-07-01T21:39:00

There is no "simple" solution to that - you can't just assume that Parse will convert

[2-A 2B]3

Into

(2 + 2) * 3

which is what you are asking it to do: Parse converts "123" into an integer value 123, and nothing else. If it means anything which isn't numeric, it fails. So your Linq expression (which basically throws away non-numeric characters) works out to trying to add

Which is never going to be 72...

If you want to threat that text in the way you describe (which frankly is rather odd) then you will need to build an entire lexical parser to look at the entire data and work out exactly what it is supposed to do with it. There is (AFAIK) no parser which works with data in that format.

DamithSL · Answer 2 · 2014-07-01T21:45:00

Solution 2

try with Mathematical Expressions Evaluator NCalc[^]
for example

C#

Expression e = new Expression("2 + 3 * 5");
var result =e.Evaluate(); // 17

To use NCalc you need to build valid expression using your input. Try to remove letters from the input and join each line with "+" and replace "{" and "[" etc with "(" ... so on...

at the end you will need to have expression like below

C#

Expression e = new Expression("15+15+((2+2)*3+5)*2+8");
var result =e.Evaluate(); // 72

Posted 1-Jul-14 21:45pm

DamithSL

Comments

cadsolution 2-Jul-14 3:50am

dear damithSL

thanks for answer but i want user enterd values total
iam using below code like
int sum = textBox1.Lines.Sum(line => int.Parse(new String(line.
Where(x => Char.IsDigit(x)).ToArray())));
this can be used enterd any value
but i could not code when i using multi brackets

plz help me.

DamithSL 2-Jul-14 4:05am

yes, that code also I have given in your previous question which already closed.
you need to try yourself to do at least some basic string manipulations to achieve your goal.
don't expect full functioning code from code project for your requirements. You already have enough guide lines to try yourself. Check the OriginalGriff's answer as well.

cadsolution 2-Jul-14 9:03am

iam trying myself,but iam unable to get correct so plz help us.

cadsolution 5-Jul-14 1:36am

dear friend,
iam unable to get the idea of coding.plz this time help me.