From my Knowledge, we can close the current Form and open it again by single button click or we can change the Particular part with the single button click.. the diff. is the way what we think...
refer the code below...
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
GetCurrentTime();
}
void GetCurrentTime()
{
label1.Text = System.DateTime.Now.ToString();
}
private void button1_Click(object sender, EventArgs e)
{
GetCurrentTime();
}
}