I am trying to do baic subtraction using
texbox21.text - texbox60.text = output
to
Label1
. The math and function works.
This is for multiple rows of the same kind of equation but with different texboxes,
Simple math. But if the values are blank I get an exception Error. Here is my code please enlighten me on what I am missing.
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
Dim Net1 As Double
Dim Net2 As Double
Dim Loaded1 As Double
Dim End1 As Double
Loaded1 = Double.Parse(TextBox21.Text)
End1 = Double.Parse(TextBox60.Text)
Dim Loaded2 As Double
Dim End2 As Double
If TextBox21.Text And TextBox60.Text = False Then
Net1 = False
End If
If TextBox21.Text And TextBox60.Text = True Then
Loaded1 = Double.Parse(TextBox21.Text)
End1 = Double.Parse(TextBox60.Text)
Net1 = Loaded1 - End1
Label2.Text = Net1.ToString
End If
End Sub