how to create dbcontext class

8:33

4:52

5:18

6:52

12:01

25:37

1:23

7:35

6:52

6:05

9:19

7:53

1:20

2:57

4:42

3:28

3:39

9:06

2:06

2:51

19:02

2:46

2:28

4:13

3:30

9:48

11:55

10:03

10:51

3:26

8:18

7:48

5:31

4:13

5:32

2:54

7:30

2:54

کوتاه

1:01