public partial class Form1 : Form
{
//With the code custID.Text = customers[id].ID.ToString();
//Function above will always be in par with the ID no matter what
List<Customer> customers = new List<Customer>();
int id = 0;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void AddButton_Click(object sender, EventArgs e)
{
Customer rec1 = new Customer("C0020", "Alfred", "Campbelltown", 1500, 2006);
Customer rec2 = new Customer("C0021", "Ryder", "Liverpool", 2000, 2008);
Customer rec3 = new Customer("C0022", "Alison", "Strathfield", 5500, 2012);
Customer rec4 = new Customer("C0023", "Eliza", "Liverpool", 6000, 2012);
Customer rec5 = new Customer("C0024", "Natsu", "Campbelltown", 2560, 2011);
customers.Add(rec1);
customers.Add(rec2);
customers.Add(rec3);
customers.Add(rec4);
customers.Add(rec5);
}
private void NextButton_Click(object sender, EventArgs e)
{
int length = customers.Count - 1;
if (id == length)
{
id = 0;
}
else
{
++id;
}
//Stage 3 Shows the total balance of all records and is displayed
double total = 0;
foreach (Customer Total in customers)
total += Total.Balance; //Total Balance
double balance = 0;
foreach (Customer SubTotal in customers)
balance = customers.Where(c => c.Suburb == "Liverpool").Sum( c => c.Balance);
//Create a total balance for each suburb
custID.Text = customers[id].ID.ToString();
custName.Text = customers[id].Name.ToString();
custSuburb.Text = customers[id].Suburb.ToString();
custBal.Text = customers[id].Balance.ToString();
custYear.Text = customers[id].Year_used.ToString();
totBalance.Text = total.ToString();
totSuburb.Text = balance.ToString();
}
private void PrevButton_Click(object sender, EventArgs e)
{
int length = customers.Count - 1;
if (id == 0)
{
id = length;
}
else
{
--id;
}
custID.Text = customers[id].ID.ToString();
custName.Text = customers[id].Name.ToString();
custSuburb.Text = customers[id].Suburb.ToString();
custBal.Text = customers[id].Balance.ToString();
custYear.Text = customers[id].Year_used.ToString();
}
private void custID_Click(object sender, EventArgs e)
{
}
private void custSub_Click(object sender, EventArgs e)
{
}
private void custBal_Click(object sender, EventArgs e)
{
}
private void custYear_Click(object sender, EventArgs e)
{
}
private void exitApp_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void totBalance_Click(object sender, EventArgs e)
{
}
private void totSuburb_Click(object sender, EventArgs e)
{
}
private void DelButton_Click(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void custSuburb_TextChanged(object sender, EventArgs e)
{
}
private void updateButton_Click(object sender, EventArgs e)
{
customers[id].Name = custName.Text.ToString();
customers[id].Suburb = custSuburb.Text.ToString();
customers[id].Balance = double.Parse(custBal.Text);
customers[id].Year_used = double.Parse(custYear.Text);
this.Update(customers);
}
}
public class Customer
{
protected string id;
protected string name;
protected string suburb;
protected double balance;
protected double year_used;
public string ID
{
get { return id; }
}
public string Name
{
get { return name; }
set { value = name; }
}
public string Suburb
{
get { return suburb; }
set { value = suburb; }
}
public double Balance
{
get { return balance; }
set { value = balance; }
}
public double Year_used
{
get { return year_used; }
set { value = year_used; }
}
public Customer(string id, string name, string suburb, double balance, double year_used)
{
this.id = id;
this.name = name;
this.suburb = suburb;
this.balance = balance;
this.year_used = year_used;
}
}
}
嗨，这是我目前的代码。 - 当我运行代码工作完全正常我有一个上一个和下一个按钮以及一个更新按钮，我可以浏览记录 - 但是当我尝试更改文本框中的文本并点击更新按钮时，由于某些原因我点击添加然后单击上一步然后单击上一步以查看更改是否已保存