MessageBox.Show("Message here");
MessageBox.Show(ex.Message,"Caption-Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
DialogResult dr = MessageBox.Show(this, "Are you sure you want to delete room ?", "Delete Room",MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2);
if (dr == DialogResult.Yes)
{
}
else
{
}