For a car rental company, the customers are the people or entities who rent cars. In a small application, you can enter the customer's when processing a rental order. A better way is to create a list of customers so that a repeating customer would have his or her records already in the database.

1. In the Microsoft SQL Server Management Studio, if necessary, expand the Databases, the bcr, and the Tables node.
   To create a new table, right the Tables node under bcr and click New Table...
2. Set the first column name to CustomerID
3. Set its Data Type to int
4. In the lower section, expand Identity Specification and set the (Is Identify) field to Yes
5. Right-click CustomerID and click Set Primary Key
6. Complete the table with the following columns
    

   Column Name	Data Type	Allow Nulls
   CustomerID	int
   DrvLicNbr	varchar(50)	Uncheck
   FullName	varchar(50)	Uncheck
   Address	varchar(50)
   City	varchar(50)
   State	varchar(50)
   ZIPCode	varchar(20)
   Country	varchar(50)

7. Save the table as Customers and close it
8. In the Object Explorer, right-click dbo.Customers and click Open Table
9. Create a few records
10. In Microsoft Visual Studio, if necessary, open the bcr1 application created in the previous section
11. In the Data Source window, right-click dsBCR and click Configure DataSet With Wizard...
12. Expand the Tables node and click the check box of Customers
13. Click Finish
14. To create a new form, on the main menu, click Project -> Add Windows Form...
15. Set the name to Customers and click Add
16. Drag the Customers node and drop it on the form
17. While the DataGridView control is still selected on the form, in the Properties window, click the ellipsis of the Columns field and make the following changes:
     

    Selected Columns	HeaderText	Width
    CustomerID	Customer ID	75
    DrvLicNbr	Drv. Lic. #
    FullName	Full Name
    Address		130
    City		80
    State		50
    ZIPCode	ZIP Code	50
    Country		50

18. Click OK
19. Set DataGridView's Anchor property to Top, Bottom, Left, Right
20. Under the DataGridView control, add a button and set its properties as follows:
    Text: Close
    (Name): btnClose
    Anchor: Bottom, Right
     
    
21. Double-click the Close button and implement its even as follows:
     

    System::Void btnClose_Click(System::Object^ sender, System::EventArgs^ e) { Close(); }

22. Access the Central form
23. Add a button to it and set its properties as follows:
    Text: Customers
    (Name): btnCustomers
24. Double-click the Customers button
25. Implement the even as follows:
     

    private void btnCustomers_Click(object sender, EventArgs e) { Customers frmCustomers = new Customers(); frmCustomers.ShowDialog(); }

26. Execute the application to test it
27. Display the Customers form
     
    
28. Close the form(s)