private void bt_Click(object sender, EventArgs e)
{
formCategoryList catForm = new formCategoryList
{
TopLevel = false
};
buttonCategory.Controls.Add(catForm);
catForm.BringToFront();
catForm.Show();
}
public formCategory(formCategoryList flist)
{
InitializeComponent();
cn = new SqlConnection(dbCon.MyConnection());
frmlist = flist;
}