Variable from two strings

i have:

Code:

---

Public Class Form1
    Public tc1 = Color.Blue
    Public tc2 = Color.Green
    Public tc3 = Color.Orange
    Public tc4 = Color.Yellow
    Public tc5 = Color.Pink
    Public tc6 = Color.Red
    Public cSelNum As Integer
    Private Sub tcTimer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tcTimer.Tick
        Dim cSel
        If cSelNum = 6 Then
            cSelNum = 1
        Else
            cSelNum += 1
        End If
        cSel = "tc" & cSelNum.ToString
        Label1.ForeColor = cSel
    End Sub
End Class

---

this is supposed to make the text flash different colors. I'm trying to get a certain variable ex: tc6 by taking the current number and putting tc before it. This obviously doesn't work. How can i fix this?

There would be ways to make what you are describing work, but they would be kind of painful. Would you be willing to just have an array of colors? If so, then you wouldn't need to have anything other than the integer portion, as that would be the index into the array.

You might also consider that cycling through six colors may not be ideal. I have some code that cycles through every possible color in a kind of random pattern. The way I do it is to have three variables, one for Red, one for Green, and one for Blue. Every time the timer ticks, I add two small, but different, prime numbers to two of the three (I think I used 7 and 11), and subtract a different prime number from the third. When the value of any of the three colors gets over 255 or under 0, I flip the sign of the number that is being added to that color. If I was adding 7, I would begin adding -7. The larger the numbers used, the faster the colors change. It makes a pretty interesting effect, so I use it whenever I want a control to 'flash'. Rather than an annoying flash, I end up with a hypnotic effect.

Your code is not working because you are assigning a string "tc1" or so forth to the forecolor property instead of its value. What I suggest is that you use an array instead of 6 variables.

Here's your same code adapted to use the array of colors

vb.net Code:

Dim tc(6) As Color
    Dim cSelNum As Integer
 
    Private Sub tcTimer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tcTimer.Tick
 
        tc(1) = Color.Blue
        tc(2) = Color.Green
        tc(3) = Color.Orange
        tc(4) = Color.Yellow
        tc(5) = Color.Pink
        tc(6) = Color.Red
 
        If cSelNum = 6 Then
            cSelNum = 1
        Else
            cSelNum += 1
        End If
        Label1.ForeColor = tc(cSelNum)
 
    End Sub

Never try to construct the names of the variables using code to later use them as such and expect to obtain their value.

for all 6 colors, i get:
EDIT: nevermind. fixed.
thanks!

Make sure you only declare the array once. the rest of the lines (tc(1)=Color.Blue) etc. are not declarations, they are assigning values to the items in the array so do not put Dim keyword before each line.