WPF- How to save and retrieve details from database

Question

I want to develop an desktop app to save and retrieve details from database, but am having a little hitch
am getting errors in my code, kindly advice below are the required code
xaml
<Grid>
        <TextBox HorizontalAlignment="Left" Height="23" Margin="144,28,0,0" TextWrapping="Wrap" x:Name="TbxId" VerticalAlignment="Top" Width="193"/>
        <TextBox HorizontalAlignment="Left" Height="23" Margin="144,134,0,0" TextWrapping="Wrap" x:Name="TbxFn" VerticalAlignment="Top" Width="193"/>
        <TextBox HorizontalAlignment="Left" Height="23" Margin="144,77,0,0" TextWrapping="Wrap" x:Name="TbxLn" VerticalAlignment="Top" Width="193"/>
        <Label Content="Student ID" HorizontalAlignment="Left" Margin="10,28,0,0" VerticalAlignment="Top" Width="101"/>
        <Label Content="Last Name" HorizontalAlignment="Left" Margin="10,134,0,0" VerticalAlignment="Top" Width="101"/>
        <Label Content="First Name" HorizontalAlignment="Left" Margin="10,77,0,0" VerticalAlignment="Top" Width="101"/>
        <Button x:Name="BtnSave" Content="Save" HorizontalAlignment="Left" Margin="23,206,0,0" VerticalAlignment="Top" Width="75" />
        <Button x:Name="BtnBrowse" Content="Browse" HorizontalAlignment="Left" Margin="149,206,0,0" VerticalAlignment="Top" Width="75" Click="Save"/>
        <Button x:Name="BtnShow" Content="Show" HorizontalAlignment="Left" Margin="294,206,0,0" VerticalAlignment="Top" Width="75"/>
        <WindowsFormsHost Grid.Column="0" Margin="448,28,75,243">
            <wf:PictureBox x:Name="pictureBox1" Height="150" Width="150" SizeMode="StretchImage"/>
        </WindowsFormsHost>
    </Grid>
cs
private void Browse(object sender, RoutedEventArgs e)
            SqlConnection cn = SqlConnection(global::DatabaseApp.Properties.Settings.Default.Database1ConnectionString);
            try
                OpenFileDialog dlg = new OpenFileDialog();
                dlg.Filter = "JPG Files (*.jpg)|*.jpg|GIF Files (*.gif)|*.gif|All Files(*.*)|*.*";
                dlg.Title = "Select Student Picture";
                if (dlg.ShowDialog() == DialogResult.OK)
                    imgLoc = dlg.FileName.ToString();
                    picStu.ImageLocation = imgLoc;
            catch(Exception ex)
                System.Windows.MessageBox.Show(ex.Message);
Thank you
Jayjay john

Answer 1

Hi Joakins,
I think Lloyd has a point here in that all I see there which is really database related is a connection string.
Maybe your question is more general though and you're just asking how to work with a database as a general principle.
Personally, I like entity framework and would recommend that.
You can read a shed load of stuff about it.
https://msdn.microsoft.com/en-gb/data/ef.aspx?f=255&MSPPError=-2147217396
With WPF almost every dev uses MVVM and I'm no exception.
You may find this interesting:
http://social.technet.microsoft.com/wiki/contents/articles/28209.wpf-entity-framework-mvvm-walk-through-1.aspx
The article for the second in the series is only partly written, but the sample is complete:
https://gallery.technet.microsoft.com/WPF-Entity-Framework-MVVM-78cdc204
Hope that helps.
Recent Technet articles: Property List Editing;
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