我是Microsoft Visual Studio 2008的初学者用户,我想问一下将Visual Basic 2008表单连接到SQL Server compact 3.5的初始代码是什么。我想使用上述应用程序创建一个新的帐户程序。
答案 0 :(得分:0)
查看connectionstrings.com的连接字符串。
我的一些示例代码包含在下面。为清楚起见,删除了无关的内容和注释。它在C#中,但有很多工具可以将它转换为VB。或者您可以通过自己手动转换来学习另一个版本; - )
GetAllEmployees将返回Employees列表。然后可以根据需要对列表进行处理/绑定。
public static SqlConnection GetConnection()
{
//TODO: Use connectionString from app.config file
string connString = "Data Source=.\\SQLEXPRESS2008;Initial Catalog=Northwind;Integrated Security=True";
SqlConnection conn = new SqlConnection(connString);
return conn;
}
public static List<Employee> GetAllEmployees()
{
SqlConnection conn = DA.GetConnection();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandText = "SELECT * FROM Employees";
return CreateEmployeeList(cmd);
}
private static List<Employee> CreateEmployeeList(SqlCommand cmd)
{
List<Employee> employees = new List<Employee>();
using (cmd)
{
cmd.Connection.Open();
SqlDataReader sqlreader = cmd.ExecuteReader();
while (sqlreader.Read())
{
Employee employee = new Employee
{
FirstName = sqlreader["FirstName"].ToString(),
LastName = sqlreader["LastName"].ToString(),
StreetAddress1 = sqlreader["Address"].ToString(),
City = sqlreader["City"].ToString(),
Region = sqlreader["Region"].ToString(),
PostalCode = sqlreader["PostalCode"].ToString()
};
employees.Add(employee);
}
cmd.Connection.Close();
}
return employees;
}