Visual Studio 2010 Database Development Tutorial269

In this tutorial, we'll learn how to develop a basic database application using Visual Studio 2010. We'll create a new database from scratch, add tables and fields, and write code to insert, update, and delete data from the database.## 1. Creating a New Database in Visual Studio

To create a new database in Visual Studio, open the File menu and select New Project. In the New Project dialog box, select the Visual C# project type and the Windows Forms Application template. Enter a name for your project and click the OK button.

Once the project has been created, right-click on the Solution Explorer window and select Add New Item. In the Add New Item dialog box, select the Data category and the Database template. Enter a name for your database file and click the Add button.## 2. Adding Tables to the Database

To add a new table to the database, right-click on the database file in the Solution Explorer window and select the Add New Item context menu. In the Add New Item dialog box, select the Table template. Enter a name for your table and click the Add button.## 3. Adding Fields to the Table

To add a new field to the table, right-click on the table in the Solution Explorer window and select the Add New Column context menu. In the Add New Column dialog box, enter a name and data type for the new field. Click the OK button to add the field to the table.## 4. Writing Code to Insert Data into the Database

To insert data into the database, you can use the Insert() method of the TableAdapter class. The following code snippet shows how to insert a new record into the database:```
using System;
using ;
using ;
namespace MyDatabaseApp
{
public class Program
{
public static void Main()
{
// Create a new connection to the database
using (SqlConnection connection = new SqlConnection("Data Source=localhost;Initial Catalog=MyDatabase;Integrated Security=True"))
{
// Open the database connection
();
// Create a new command to insert data into the database
using (SqlCommand command = new SqlCommand("INSERT INTO MyTable (Name, Age) VALUES ('John', 30)", connection))
{
// Execute the command
();
}
// Close the database connection
();
}
}
}
}
```
## 5. Writing Code to Update Data in the Database

To update data in the database, you can use the Update() method of the TableAdapter class. The following code snippet shows how to update a record in the database:```
using System;
using ;
using ;
namespace MyDatabaseApp
{
public class Program
{
public static void Main()
{
// Create a new connection to the database
using (SqlConnection connection = new SqlConnection("Data Source=localhost;Initial Catalog=MyDatabase;Integrated Security=True"))
{
// Open the database connection
();
// Create a new command to update data in the database
using (SqlCommand command = new SqlCommand("UPDATE MyTable SET Name = 'John Smith' WHERE Id = 1", connection))
{
// Execute the command
();
}
// Close the database connection
();
}
}
}
}
```
## 6. Writing Code to Delete Data from the Database

To delete data from the database, you can use the Delete() method of the TableAdapter class. The following code snippet shows how to delete a record from the database:```
using System;
using ;
using ;
namespace MyDatabaseApp
{
public class Program
{
public static void Main()
{
// Create a new connection to the database
using (SqlConnection connection = new SqlConnection("Data Source=localhost;Initial Catalog=MyDatabase;Integrated Security=True"))
{
// Open the database connection
();
// Create a new command to delete data from the database
using (SqlCommand command = new SqlCommand("DELETE FROM MyTable WHERE Id = 1", connection))
{
// Execute the command
();
}
// Close the database connection
();
}
}
}
}
```