Visual Basic Help

zTwix0R · 2013-10-10T19:45:06.000Z

Visual Basic Help

So I'm new at this Visual Basic stuff, and I did a calculator but then I wanted to add a "variable name" that could show up on message boxes.
Example:

FirstNumber = Val(TextBox1.Text)
SecondNumber = Val(TextBox2.Text)

Label1.Text = FirstNumber - SecondNumber

MessageBox.Show("Calculated {FirstNumber} - {SecondNumber}.")

the coding here a bit awful, but can it be done or not?

Raow · 2013-10-10T22:19:01.000Z

Originally Posted by zTwix0R

So I'm new at this Visual Basic stuff, and I did a calculator but then I wanted to add a "variable name" that could show up on message boxes.
Example:

FirstNumber = Val(TextBox1.Text)
SecondNumber = Val(TextBox2.Text)

Label1.Text = FirstNumber - SecondNumber

MessageBox.Show("Calculated {FirstNumber} - {SecondNumber}.")

the coding here a bit awful, but can it be done or not?

nononono.

Code:

MessageBox.Show("Calculated" & FirstNumber - SecondNumber)

Raow · 2013-10-10T22:19:33.000Z

Otherwise, all the other stuff should work.

abuckau907 · 2013-10-11T04:05:07.000Z

Originally Posted by zTwix0R

Example:

Code:

MessageBox.Show("Calculated {FirstNumber} - {SecondNumber}.")

That looks very C++ ish, where the values are substituted into the string : The "format" string functions. I don't think vb has an equivalent.

Code:

Dim FirstNumber As Integer = Val(TextBox1.Text)
Dim SecondNumber As Ineger = Val(TextBox2.Text)

Label1.Text = (FirstNumber - SecondNumber).ToString()

MessageBox.Show("Calculated " & FirstNumber.ToString() & " - " & SecondNumber.ToString())

edit:

If you don't have Option Strict on, you don't need to call .ToString() on the Integers. It's a little verbose; probably more clear to a beginner to just leave them off.

Code:

Dim FirstNumber As Integer = Val(TextBox1.Text)
Dim SecondNumber As Ineger = Val(TextBox2.Text)

Label1.Text = (FirstNumber - SecondNumber).ToString()

MessageBox.Show("Calculated " & FirstNumber & " - " & SecondNumber)

Visual Basic Help

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