Session 8 connect your universal application with database .. builders & developers workshop MSTC15

1. Builders & Developers
Workshop
SESSION 8
PREPARED & PRESENTED BY : MOATASIM MAGDY

2. Our topic today
Database

3. Why database ?

4. Queries
Create
Select
Insert
Update
Delete
Drop

5. Create Table
CREATE TABLE table_name
(
Column_name1 data_type(Size),
Column_name2 data_type(Size),
Column_name3 data_type(Size),
…….
);

6. Insert Query
INSERT INTO table_name
VALUES (value1, value2 , value3 …);
OR
INSERT INTO table_name
(column1, column2, column3 ….)
VALUES (value1, value2 , value3 …);

7. Select query
SELECT column_name, column_name2
FROM table_name
WHERE column_name operator value;
OR
SELECT *
FROM table_name
WHERE column_name operator value;

8. Operators
= Equal
<> Not equal
> Greater than
< Less than
>= Greater than
<= Less than
LIKE Search for pattern

9. Update query
UPDATE table_name
SET column1 = VALUE, column2 = VALUE
WHERE some_column = some_value;

10. Delete Query
DELETE FROM table_name
WHERE some_column = some_value;
Drop Table
DROP TABLE table_name

11. How to connect Your Universal
application with sqlite ?

12. Step 1
First press tools then open extensions and updates, make sure these
2 extensions are available.

13. Step 2
Then from solution explorer right
click on references from windows 8.1
part then select add reference.

14. Step 3
After you open reference manager in windows phone select this.

15. Step 4
Then from solution explorer right
click on references from windows
8.1 part then select add reference.

16. Step 5
After you open reference manager in windows phone select this.

17. Step 6
You will notice these warnings in
windows and windows phone

18. Step 7
To solve this warnings open
configuration manager from the
Debug in the top bar of visual
studio.

19. Step 8
Right click on the project from solution and explorer then open
“manage nugget packages” and search for sqlite-net then install.

20. Step 9
To make sure every thing is going
right you`ll notice appearance of
this 2 classes in windows and
windows phone part.

21. Connect your database with C#
Create Database.
Check existence of database.
Create Table , Create using database connection.
Add record(s) to your table
Select record from your table
Remove record from your table
Update record from your table
Drop table

22. Database
Open create if not existence
Check if not exist

23. Table
We start defining the class that
represent the table row ->
Then add the table
to the database

24. Add a record to a table
Add one record. Add more than one record

25. Select record from your table
SQLiteAsyncConnection conn = new SQLiteAsyncConnection("people.db");
var cityUsers = await conn.QueryAsync<User>(
"SELECT * FROM Users WHERE Name = ?", new object[] { textbox1.Text
});
foreach (var user in cityUsers)
{
UserList.ItemsSource = cityUsers;
}

26. Select all records
SQLiteAsyncConnection conn = new SQLiteAsyncConnection("people.db");
bool dbExist = await CheckDbAsync("people.db");
if (!dbExist)
{
await CreateDataBase();
}
var query = conn.Table<User>();
users = await query.ToListAsync();
UserList.ItemsSource = users;

27. Delete Record
private void Button_Click_5(object sender, RoutedEventArgs e)
{
var dbPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path,
"people.db");
using (var db = new SQLite.SQLiteConnection(dbPath))
{ try
{ db.Execute("DELETE FROM Users WHERE Name = ?", textbox1.Text); }
catch (Exception ex)
{ // EXCEPTION HANDLING }}}

28. Update Record
private void Button_Click_6(object sender, RoutedEventArgs e)
{
var dbPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path,
"people.db");
using (var db = new SQLite.SQLiteConnection(dbPath))
{ try
{ db.Execute("UPDATE Users SET Name = ? WHERE Name = ?", textbox2.Text,textbox1.Text);
}
catch (Exception ex)
{ // EXCEPTION HANDLING }}}

29. Drop Table

30. XAML: How to do list ?
<ListView x:Name="UserList" Margin="671,53,20,20">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Margin="10">
<TextBlock Text="{Binding Name}" />
<TextBlock Text="{Binding City}" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>

32. Summary

33. Any questions ?

34. Thank you 