我已使用以下代码将数据插入到SqlCe数据库中:
using (DBContacts context = new DBContacts(ConnectionString)) { TblContacts tblCtc = new TblContacts(); tblCtc.FirstName = txtBoxFirstNm.Text; tblCtc.LastName = txtBoxLastNm.Text; tblCtc.Mobile1 = txtMobile1.Text; tblCtc.Email1 = txtEmail1.Text; context.TblContacts.InsertOnSubmit(tblCtc); context.SubmitChanges(); MessageBox.Show("Inserted Ok."); }
问题:
1)如何使用Linq To SQL中的select并显示检索到的数据?
using (DBContacts context = new DBContacts(ConnectionString)) { IEnumerable ctc = from c in context.TblContacts select c; // what to get the result and display ?? // txtBlkFirstname.Text = ctc.FirstName ?? // txtBlkLastname.Text = ctc.LastName ?? ..... }
1a)使用哪种? IQueryable或IEnumerable?
1b)Select语句返回什么?如何处理数据返回?
1c)如何从Iqueryable或IEnumerable中获取数据并为TextBlock控件赋值?
------如何将数据绑定到ListBox
答案 0 :(得分:2)
public List<TblContacts> GetAllContact()
{
using (DBContacts context = new DBContacts(ConnectionString))
var contacts = from m in context.TblContacts select m;
return contacts.Take(100).ToList();
}
我在WCF服务中使用的类似内容,也应该在您的应用中使用,我希望,
尝试将列表框源绑定到GetAllContacts(),然后在该列表框中将其数据绑定到各个字段
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<StackPanel Name="contentP" Opacity="1">
<ListBox Height="623" Margin="-20,0,0,0" Name="listBox1" Width="473">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Height="132">
<Image Source="{Binding ImageSource}" Height="75" Width="75" VerticalAlignment="Top" Margin="15,10,10,0"/>
<StackPanel Width="380">
<ContentControl Margin="0,10,0,0" HorizontalAlignment="Left">
<HyperlinkButton HorizontalAlignment="Left" Style="{StaticResource HyperlinkButtonStyle}" Content="{Binding Title}" Foreground="#FFC8AB14" NavigateUri="{Binding Link}" TargetName="_blank"/>
</ContentControl>
<TextBlock Margin="10,10,30,0" Text="{Binding Message}" Foreground="{StaticResource PhoneAccentBrush}" TextWrapping="Wrap" FontSize="20" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Grid>
在您的代码中,您将“listbox1”ItemsSource设置为您的DBQuery的源代码,不知道如何使用我的WCF服务在您的情况下执行此操作,但它的内容可能是这个
listbox1.ItemsSource = (result of your query ("e.Result;");