Looping through labels in C#

Question

I have nine labels with the names "lbl101", "lbl102", ...

I want to do this:

for (int i = 0; i < 9; i++)
{
    sting name = "lbl10" + i;
    name.BackColor = Color.Red;
}

How can I do this?

Answer 1

You can add the controls to a collection, and loop through that.

var labels = new List<Label> { lbl101, lbl102, lbl103 };

foreach (var label in labels)  
{  
    label.BackColor = Color.Red;  
}

Alternatively, if you just want every Label on the Form that starts with "lbl10", you can use LINQ to query the collection of controls:

var labels = this.Controls.OfType<Label>()
                          .Where(c => c.Name.StartsWith("lbl10"))
                          .ToList();