How to store a data in local using uwp

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database

UWP

I was given a project to store a data in localdatabase I don't know how to create and store the data in local. eg: if I type a name in a textbox the the name must be store in local database I can't figure it out anyone know about it

What I have tried:

https://learn.microsoft.com/en-us/sql/relational-databases/databases/add-data-or-log-files-to-a-database?view=sql-server-ver16

<pre> <Grid VerticalAlignment="Center" Background="White"
          Margin="8"
          Padding="16">
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <TextBox x:Name="txtUser"
                 Grid.Row="2"
                 PlaceholderText="UserName"
                 Margin="8"
                 MaxWidth="200" />
        <PasswordBox x:Name="txtPassword"
                 Grid.Row="3"
                 PlaceholderText="Password"
                 Margin="8"
                     MaxWidth="200" />
        <Button x:Name="btnLogin"
                                 Grid.Row="4"

                    Grid.Column="0"
                    Content="Login"
                    Margin="8"
                    Background="Green"
                    Foreground="White"
                    HorizontalAlignment="Stretch" 
                 MaxWidth="200" Click="btnLogin_Click"/>
    </Grid>

my table design

CREATE TABLE [dbo].[Table]
(
	[Id] INT NOT NULL PRIMARY KEY, 
    [txtUser] NCHAR(10) NULL, 
    [txtPassword] NCHAR(10) NULL
)