how do change Emp category base on date

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i have a table in sql like following structure

C#

Id   Emp_Id       Category_Id    
1     sss             A
2     CCC             A
3     VVV             B
4     BBB             B

I am using following code to get day from the given date

C#

Int16 day = Convert.ToInt16(SafeConvert.ToDateTime(txtDate.Text).Day);

i want that if day is even then change employee with category 'A' Change to category 'B' and Employee with category B CHANGE TO 'A',IF day is odd then opposite happen without changing the original table value that is store in table by user.

Posted 5-Apr-15 18:58pm

Sajid227

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Abhinav S · Answer 1 · 2015-04-05T19:19:00

Solution 1

These links will help you learn about updating data using Entity Framework -
Add, Update and Delete Objects in Entity Framework 4.0[^]
How to: Add, Modify, and Delete Objects[^]
Update Existing Entity using DBContext [^]

Posted 5-Apr-15 19:19pm

Abhinav S

Comments

Sajid227 6-Apr-15 4:08am

i am using following code
DateTime date = SafeConvert.ToDateTime(txtDate.Text);
Int16 day = Convert.ToInt16(SafeConvert.ToDateTime(txtDate.Text).Day);
if (day % 2 == 0)
{
var empcatone = (from ec in entities.EmployeeCategories where ec.Category_Id == 1 select ec).ToList();
foreach (var Empcatone in empcatone)
{

Empcatone.Category_Id = 2;

}
var empcattwo = _service.GetAllEmployeeCategory().Where(x => x.Category_Id == 2).ToList();
foreach (var Empcattwo in empcattwo)
{
Empcattwo.Category_Id = 1;

}

}
else if (day % 2 != 0)
{
var empcatone = _service.GetAllEmployeeCategory().Where(x => x.Category_Id == 2).ToList();
foreach (var Empcatone in empcatone)
{
Empcatone.Category_Id = 1;

}
var empcattwo = _service.GetAllEmployeeCategory().Where(x => x.Category_Id == 1).ToList();
foreach (var Empcattwo in empcattwo)
{
Empcattwo.Category_Id = 2;

}

}
pro\blem is that data is not updaing in respective column