Product Key Dialog

• Download demo with source - 55.1 KB

Introduction

This control allows for a simple and easy way to allow the user to enter a product key.

Using the Code

Constructor : The Code

ProductKeyBox(1,2,3)

If you don't have an icon or title, you can pass in null.

Class View : The Control

This control has three parameters you can pass in: KeyPartLength, Icon, DialogTitle. KeyPartLength controls how long each section of the key can be. You can redesign the dialog to add more or less KeyParts and TextBoxes based on the length of your product key. Icon is the image displayed in the top left of the dialog which inherits from System.Drawing.Image namespace.

Design : Your UI

Code Behind : Your Code

private void button1_Click(object sender, EventArgs e)
{
	ProductKeyBox.ProductKeyBox box = new ProductKeyBox.ProductKeyBox(6, null, "");
        if (box.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
        	label1.Text = "KeyPart[0]: " + box.KeyParts[0];
                label2.Text = "KeyPart[1]: " + box.KeyParts[1];
                label3.Text = "KeyPart[2]: " + box.KeyParts[2];
                label4.Text = "KeyPart[3]: " + box.KeyParts[3];
        }
}

Points of Interest

I attempted to remake this control for use in WPF projects but I discovered it was a bit more challenging than originally thought. I also thought about using a separate class instead of a string array to store the product key sections but found it difficult to add in. Here's the code if you wish to try:

public class ProductKey
    {
        private static DateTime endDate, startDate;
        public ProductKey()
        {

        }
        public ProductKey(DateTime startDate)
        {
            StartDate = startDate;
        }
        public ProductKey(DateTime startDate, DateTime endDate)
        {
            StartDate = startDate;
            EndDate = endDate;
        }
        public ProductKey(DateTime startDate, DateTime endDate, string[] keyParts)
        {
            StartDate = startDate;
            EndDate = endDate;
            KeyParts = keyParts;
        }
        public ProductKey(string[] keyParts)
        {
            KeyParts = keyParts;
        }
        public string[] KeyParts
        {
            get;
            set;
        }
        public DateTime StartDate
        {
            get
            {
                return startDate;
            }
            set
            {
                startDate = value;
            }
        }
        public DateTime EndDate
        {
            get
            {
                return endDate;
            }
            set
            {
                endDate = value;
            }
        }
        public int DaysRemaining
        {
            get
            {
                if (startDate != null && endDate != null)
                    return endDate.Subtract(startDate).Days;
                else
                    return 0;
            }
            set
            {
                endDate = startDate.Add(new TimeSpan(value, 0, 0));
            }
        }
    }

History

• Initial post: 9/11/2013