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Progressive Clock

 

Introduction

The dialog box on this exercise displays three progress bars: one holds the value of the current hour, another holds the value oVisual C# Examples - Progressive Clockf the minutes in the current hour, the last displays the seconds of the current minute. We also use a label on the right side of each progress bar to display its corresponding value.

Creating the Controls

To start this application, you can use a form. Then add the necessary controls to it as we will design shortly. Although the hour holds 24 values while the minutes and the seconds hold 60 values each, we will use the same dimensions (especially the same width) for all progress controls. Because a progress control has no mechanism or message to trigger the change of its position, we will use a timer to handle such a message.

Practical Learning: Starting the Exercise

  1. Start a new Visual C# project as a Windows Forms Application
  2. Name it ProgressClock
  3. Design the form as follows:
     
     
    Control Name Text Other Properties
    Label Time  
    Label   Hours:  
    ProgressBar  pgrHours   Anchor: Top, Left, Right
    Maximum: 23
    Step: 1
    Label lblHours 00  
    Label   Minute:  
    ProgressBar  pgrMinutes   Anchor: Top, Right
    Maximum: 59
    Step: 1
    Label lblMinutes 00 Anchor: Top, Right
    Label   Second:  
    ProgressBar  pgrSeconds   Anchor: Top, Right
    Maximum: 59
    Step: 1
    Label lblSeconds 00 Anchor: Top, Right
    Button btnClose Close  
    Timer     Enabled: True
    Interval: 20
  4. Double-click the Timer to generate its Tick() event and implement it as follows:
     
    private void timer1_Tick(object sender, System.EventArgs e)
    {
    	DateTime curTime = DateTime.Now;
    	int H = curTime.Hour;
    	int M = curTime.Minute;
    	int S = curTime.Second;
    
    	pgrHours.Value = H;
    	pgrMinutes.Value = M;
    	pgrSeconds.Value = S;
    
    	lblHours.Text = H.ToString();
    	lblMinutes.Text = M.ToString();
    	lblSeconds.Text = S.ToString();
    }
  5. Return to the form and click an unoccupied area of its body
  6. In the Properties window, click the Events button and generate the Resize event of the form
  7. Implement it as follows:
     
    private void Form1_Resize(object sender, System.EventArgs e)
    {
    	this.pgrHours.Width = 2 * this.pgrMinutes.Width / 5;
    }
  8. On the form, double-click the Close button and implement it as follows:
     
    private void btnClose_Click(object sender, System.EventArgs e)
    {
    	Close();
    }
  9. Test the application
  10. After using it, close it and return to your programming environment.
 
 

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