public static ManageCategory createInstance() { if (manageCaetgory == null) { manageCaetgory = new ManageCategory(); } return(manageCaetgory); }
private void manageCategoryBtn_Click(object sender, EventArgs e) { ManageCategory manageCategory = ManageCategory.createInstance(); manageCategory.ShowDialog(); if (manageCategory.Focused == false) { this.Focus(); loadCategories(); } }