//Method for OK button to add new product to list and database private void btnOK_Click(object sender, EventArgs e) { string name = txtProdName.Text.ToString(); //get text from textbox int i = ProductsDB.AddNewProduct(name.ToUpper()); //change input to uppercase KeyValuePair <string, int> val = new KeyValuePair <string, int>(name, i); //create key value pair for databse ProductsDB.Products.Add(val); //add new value pair to database MessageBox.Show("Created new product.", "Success"); //popup confirmation this.Close(); }