Customer Equals Method

The customer Equals() method doesn't check ID number to verify that two instances of the customer class are exactly equal. This can cause problems when comparing people who happen to have the same name. Update this to check every aspect of the customer.

File Location: StoreApp.DataModel/Customer.cs

该 issue 指向 StoreApp.DataModel/Customer.cs。打开该文件，找到 Equals() 方法，并修改它以比较 Customer 类的所有字段，包括 ID。确保该方法遵循 C# 中标准的相等性重写模式。通过创建名称相同但 ID 不同的实例进行测试，以验证它们不会被视为相等。

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