Question

I am developing a project in C# Windows applications (WinForms) in that I need to create a function to change the background color for all the buttons that are in the single form using button mouse-over event. How do I do that?

Answer 1

Changing all controls of type Button:

for (int i = 0; i < Controls.Count; i++)
            if (Controls[i] is Button) Controls[i].BackColor = Color.Blue;

Example of hooks:

MouseEnter += new EventHandler(delegate(object sender, EventArgs e)
    {
        SetButtonColour(Color.Blue);
    });

MouseLeave += new EventHandler(delegate(object sender, EventArgs e)
    {
        SetButtonColour(Color.Red);
    });

public void SetButtonColour(Color colour)
    {
        for (int i = 0; i < Controls.Count; i++)
            if (Controls[i] is Button) Controls[i].BackColor = Color.Blue;
    }