LINQ to SQL – INSERT

LINQ to SQL – INSERT

Before writing a LINQ to SQL query, we first need to create a DataContext using the LINQ to SQL Classes template, to know more on how to create the DataContext refer to the post LINQ to SQL Sample

Once the DataContext is created we can query the Object model using LINQ queries, let us consider the Employee table which has the following structure.

INSERT into a table is a regular database operation, involved in any Transaction processing system.

Assume we have the following data in the Employee and Department Tables

Table: Employee

ID	NAME	Phone	Email	DepartmentID	Salery
1	Tom	123-123-1234	tom@abcsoftware.com	1	5000
2	Harry	123-123-1234	harry@abcsoftware.com	2	6000
3	Peter	111-222-3333	peter@abcsoftware.com	3	6500
4	John	111-222-3333	john@abcsoftware.com	3	7500
5	Charles	666-444-2222	charles@abcsoftware.com	NULL	6500

Table: Department

ID	NAME
1	Finance
2	Human Resources
3	IT
4	Sales
5	Marketing

The SQL query to insert data into the Employees table will be as follows.



INSERT INTO Employee
                      (Name, DOB, DOJ, Phone, Email, DepartmentID, Salery)
VALUES     ('Robert', '10/07/1973', '05/01/2009', '111-222-3333', 'robert@abcsoftware.com',

Now let us see how the equivalent INSERT query in LINQ Looks like.

EmployeeClassesDataContext dbContext = new EmployeeClassesDataContext();

Employee objEmp = new Employee();

      objEmp.Name = "Robert";

      objEmp.DOB = "10/07/1973";

      objEmp.DOJ = "05/01/2009";

      objEmp.Phone = "111-222-3333";

      objEmp.Email = "robert@abcsoftware.com";

      objEmp.DepartmentID = 4;

      objEmp.Salery = 5500;

      dbContext.Employees.InsertOnSubmit(objEmp);

      dbContext.SubmitChanges();

After this code is executed you can find the details of the new employee in the Employees table, as follows.

ID	NAME	Phone	Email	DepartmentID	Salery
1	Tom	123-123-1234	tom@abcsoftware.com	1	5000
2	Harry	123-123-1234	harry@abcsoftware.com	2	6000
3	Peter	111-222-3333	peter@abcsoftware.com	3	6500
4	John	111-222-3333	john@abcsoftware.com	3	7500
5	Charles	666-444-2222	charles@abcsoftware.com	NULL	6500
6	Robert	111-222-3333	robert@abcsoftware.com	4	5500

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