Textbox value summation

Question

I have two textboxes in which users enter a number, Data1.text and Data2.text. I need to do a simple check before proceeding and closing a form, i.e. the process should check if the sum of the values in Data1 and Data2 textbox is greater or lesser than the value from a label text named FinalValue.text, which gets its value from my main form.

    If Data1.Text + Data2.Text <> FinalValue.Text Then
        MessageBox.Show("The sum of the entered values are different from the final value!")
        Exit Sub
    End If

The problem is that whatever the user enters in the two textboxes, the messagebox pops up.

For example...if the FinalValue label has a value of 58.50, and if the user enters in one textbox 50 and in the other one 8.50, the messagebox pops up. I suppose I have to format my textboxes or something like that, but not sure in which way.

Thanks,

Luis Tellez · Accepted Answer · 2016-04-18 10:55:41Z

1

When you do Data1.Text + Data2.Text, you are actually just concatenating the values, not doing a number Sum, you need to convert to decimal.

Something like :

If Decimal.Parse(Data1.Text) + Decimal.Parse(Data2.Text) <> Decimal.Parse(FinalValue.Text) Then
        MessageBox.Show("The sum of the entered values are different from the final value!")
        Exit Sub
    End If

answered Apr 18, 2016 at 10:55

Luis Tellez

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1 Comment

Ajdin Over a year ago

I knew it was something simple :) Thank you very much!

Tushar Gupta · Accepted Answer · 2016-04-18 10:55:17Z

1

Assuming the values are integers , change your condition to match the integers sum, You are currently concatenating the strings

CInt(Data1.Text) + CInt(Data2.Text) <> CInt(FinalValue.Text)

Or for Decimals use Decimal.Parse() in place of CInt()

answered Apr 18, 2016 at 10:55

Tushar Gupta

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3 Comments

Tushar Gupta Over a year ago

@Ajdin Please upvote/accept the answer if it solved your query ;)

Ajdin Over a year ago

I did, but unfortunately I don't have enough reputation points to make it count.

Tushar Gupta Over a year ago

@Ajdin : You can always accept an answer , if that helped you ;)

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