Question

I’m trying to make a loop to check if certain files exist, and if they do they’re going to change an indicator label on my form, but I can’t seem to work out how to do this w/out typing out every single one manually such as this:

        if (File.Exists("C:\\MonitorFiles\\BOT-PC-8is1.txt"))
        {
            PC8IS1.BackColor = Color.Green;
        }
        if (File.Exists("C:\\MonitorFiles\\BOT-PC-8is2.txt"))
        {
            PC8IS2.BackColor = Color.Green;
        }
        if (File.Exists("C:\\MonitorFiles\\BOT-PC-8is3.txt"))
        {
            PC8IS3.BackColor = Color.Green;
        }

I’ve tried several very basic ways of just building arrays and substituting but I can’t put ” VariableX.backcolor “, I’ve tried [variable].backcolor, no dice.

This is a hard one to search for on google, and hopefully has an easy answer!

Thanks

Answer 1

What you want is a dictionary, the key will be the file-name the value will be your control.

public partial class Form1 : Form
{
    Dictionary<string, Label> files;
    public Form1()
    { 
        InitializeComponent();
        files = new Dictionary<string,Label>();
        files.Add("C:\\MonitorFiles\\BOT-PC-8is1.txt", PC8IS1);
        files.Add("C:\\MonitorFiles\\BOT-PC-8is2.txt", PC8IS2);
        files.Add("C:\\MonitorFiles\\BOT-PC-8is3.txt", PC8IS3);
     }
    public void otherFunc()
    {
        foreach (var item in files)
        {
            if (File.Exists(item.Key))
                item.Value.BackColor = Color.Green;
        }
    }
}