private void GetData()
{
SampleDataContext dbContext = new SampleDataContext();
GridView1.DataSource = dbContext.GetEmployees();
GridView1.DataBind();
}
protected void btnGetEmployeesByDepartment_Click(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
string deptName = null;
GridView1.DataSource = dbContext.GetEmployeesByDepartment(1, ref deptName);
GridView1.DataBind();
lblDept.Text = "Department " + deptName;
}
}
protected void btnDelete_Click(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
// Employees newEmployes = dbContext.Employees.SingleOrDefault(x => x.ID == 23);
// dbContext.Employees.DeleteOnSubmit(newEmployes);
var newEmployes = from emp in dbContext.Employees
where emp.FirstName == "Robert"
select emp;
dbContext.Employees.DeleteAllOnSubmit(newEmployes);
dbContext.SubmitChanges();
}
GetData();
}
protected void btnUpdate_Click(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
// Employees newEmployes = dbContext.Employees.SingleOrDefault(x => x.ID == 23);
// newEmployes.Salary = 65000;
var newEmployes = from emp in dbContext.Employees
where emp.FirstName == "Robert"
select emp;
foreach (Employees data in newEmployes)
{
data.Salary = 65000;
}
dbContext.SubmitChanges();
}
GetData();
}
protected void btnInsert_Click(object sender, EventArgs e)
{
using (SampleDataContext dbContext = new SampleDataContext())
{
Employees newEmployes = new Employees()
{
FirstName = "Robert",
LastName = "K",
Gender = "Male",
Salary = 55000,
DepartmentId = 1
};
dbContext.Employees.InsertOnSubmit(newEmployes);
dbContext.SubmitChanges();
}
GetData();
}
protected void Page_Load(object sender, EventArgs e)
{
using (SampleDataContext dbcontext = new SampleDataContext())
{
dbcontext.Log = Response.Output;
//lazy
//gvdepartments.datasource = dbcontext.departments;
// eager
gvDepartments.DataSource = from dept in dbcontext.Departments
select new { name = dept.Name, employees = dept.Employees };
gvDepartments.DataBind();
}
//using (SampleDataContext dbContext = new SampleDataContext())
//{
// dbContext.Log = Response.Output;
// DataLoadOptions dataLoad = new DataLoadOptions();
// dataLoad.LoadWith<Departments>(d => d.Employees);
// dbContext.LoadOptions = dataLoad;
// gvDepartments.DataSource = dbContext.Departments;
// gvDepartments.DataBind();
//}
}
