How can I update the value of a Label control periodically?

Question

I\'m trying to make a label display some text, and then after a short while refresh itself and be able to re-display something else later. At the moment however I don\'t know ho

Answer 1

From your questions, it seems you need to change the value of something like a status label to display information periodically to the user. If you are using winforms, you can use a timer and a delegate like this:

From your questions, it seems you need to change the value of something like a status label to display information periodically to the user. If you are using winforms, you can use a timer and a delegate like this:

//First create a delegate to update the label value
public delegate void labelChanger(string s);

//create timer object
Timer t = new Timer();

//create a generic List to store messages. You could also use a Queue instead.
List mod = new List();

//index for list
int cIndex = 0;

//add this in your Form Load event or after InitializeComponent()
t.Tick += (timer_tick);
t.Interval = 5000;//how long you want it to stay.
t.Start();

//the timer_tick method
private void timer_tick(object s, EventArgs e)
{
     labelWarningMessage.Invoke(new labelChanger(labelWork), mod[cIndex]);
     cIndex++;
}

//the method to do the actual message display
private void labelWork(string s)
{
     labelWARNING.Visible = true;
     labelWarningMessage.Text = "This module has a prerequisite module: " + s;
}

I hope that helps. Good Luck.

EDIT: Thought I posted this code long ago only to come back and find out I didn't...but maybe someone might find it useful.

Also, this method will be redundant in this case, since creating the Timer alone will work without the use of a delegate and is only useful for the delegate usage and UI thread access part.