How to Total All Values From A Text Box Ignoring Blank Fields

Question

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ASM

Good day all, I need some help

I have 10 text boxes to add to get the total sum .. some thing like this

C#

int totalQLoaded = int.Parse(Txt50ClCokeQuantityLoaded.Text) + int.Parse(Txt50ClFantaQuantityLoaded.Text) + int.Parse(Txt50ClSpriteQuantityLoaded.Text)
                + int.Parse(TxtBCokeQuantityLoaded.Text) + int.Parse(TxtBEvaQuantityLoaded.Text) +

//the calculation works fine if all the text boxes are filled with numbers.

SQL

but in a situation where some fields are left blank how do i get the total sum ignoring  those field that are blank..

thanks for your time I appreciate

Posted 4-Nov-13 3:05am

Difameg Network Nigeria

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OriginalGriff · Accepted Answer · 2013-11-04T03:18:00

Solution 1

Simple: create a method that accepts a string and returns the value or a default if the string is blank:

C#

private int GetValue(string s)
    {
    int value = 0;
    if (!string.IsNullOrWhiteSpace(s))
        {
        int.TryParse(s, out value);
        }
    return value;
    }

Then all you have to do is call that instead:

C#

int totalQLoaded = GetValue(Txt50ClCokeQuantityLoaded.Text) + 
                   GetValue(Txt50ClFantaQuantityLoaded.Text) +
...

Posted 4-Nov-13 3:18am

OriginalGriff

Comments

Difameg Network Nigeria 4-Nov-13 9:41am

thanks bro, it worked fine

Difameg Network Nigeria 4-Nov-13 9:43am

can you please explain it to me (!string.IsNullOrWhiteSpace(s))
{
int.TryParse(s, out value);
I want to have an idea of that....thanks, i really do appreciate

OriginalGriff 4-Nov-13 9:53am

The first checks if the string has any significant content: i.e. it isn't null and it isn't white space (tabs, spaces, that kind of thing) - it needs to have at least one actual character to pass.
The second does much what int.parse does, but without throwing an exception if the string is not a valid number - it returns a "true / false" value instead, which I am ignoring in this case.