protected void BtmUpdate(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
Employees employee = dbContext.Employees.SingleOrDefault(x => x.ID == 8);
employee.Salary = 65000;
dbContext.SubmitChanges();
}
GetData();
}
protected void GetEmpoyeesByDepartment(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
string deptName = string.Empty;
GridView1.DataSource = dbContext.GetEmployeesByDepartment(1, ref deptName);
GridView1.DataBind();
lblDept.Text = "Le nom du département est :" + deptName;
}
GetData();
}
protected void BtmDelete(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
try
{
Employees employee = dbContext.Employees.SingleOrDefault(x => x.ID == 10);
dbContext.Employees.DeleteOnSubmit(employee);
dbContext.SubmitChanges();
}
catch (Exception ex)
{
ExceptionMethod(ex);
}
}
GetData();
}
private void GetData()
{
SampleDataContext dbContext = new SampleDataContext();
//dbContext.Log = Response.Output;
// première solution pour récupérer tous les employés de la table
var linqQuery = from employee in dbContext.Employees
select employee;
//troisième façon de le faire avec une lambda expression
var lindQuery3 = dbContext.Employees.Select(x => x);
//Response.Write(dbContext.GetCommand(linqQuery).CommandText);
// deuxième solution pour récupérer tous les employés de la table avec une procédure stokée
var linqQuery2 = dbContext.GetEmployees();
GridView1.DataSource = lindQuery3;
GridView1.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
SampleDataContext dbContext = new SampleDataContext();
var linqQuery = from employee in dbContext.Employees
join departement in dbContext.Departments
on employee.DepartmentId equals departement.ID
where departement.Location == "London"
select new { employee.FirstName, employee.LastName, departement.Location };
var linqQuery4 = from employee in dbContext.Employees
join departement in dbContext.Departments
on employee.DepartmentId equals departement.ID
where departement.Location == "London"
select new { employee.FirstName, employee.LastName, departement.Location };
var linqQuery2 = dbContext.Employees.
Join(dbContext.Departments,
empl => empl.DepartmentId,
depart => depart.ID,
(empl, depart) => new { Empl = empl, Depart = depart }).
Where(x => x.Depart.Location == "London").
Where(x => x.Empl.Gender == "Male").
Select(x => new { x.Empl.FirstName, x.Empl.LastName, x.Depart.Location, x.Empl.Gender });
var linqQuery3 = dbContext.Employees.
Join(dbContext.Departments,
empl => empl.DepartmentId,
depart => depart.ID,
(empl, depart) => new { Empl = empl, Depart = depart }).
Where(x => x.Depart.Location == "London").
Select(x => new { x.Empl.FirstName, x.Empl.LastName, x.Depart.Location });
var linqQuery5 = dbContext.Employees.GroupBy(x => x.Salary).OrderBy(x => x.Min()).
Select(x => x.Key).ToList();
GridView1.DataSource = linqQuery5;
GridView1.DataBind();
}
protected void BtmInsert(object sender, EventArgs e)
{
try
{
using (SampleDataContext dbContext = new SampleDataContext())
{
Employees newEmployee = new Employees
{
FirstName = "jean",
LastName = "Fred",
Gender = "Male",
Salary = 50000,
DepartmentId = 1,
};
dbContext.Employees.InsertOnSubmit(newEmployee);
dbContext.SubmitChanges();
}
GetData();
}
catch (Exception ex)
{
ExceptionMethod(ex);
}
}
