Refresh Grid with new DataContext WPF

I have a grid with a domain service binded to the data context. I would like to refresh that data context.

I have the code:

            <Grid DataContext="{Binding Data, ElementName=userDomainDataSource}" Name="gridAccountDetails">
                <sdk:Label Content="Address Line" HorizontalAlignment="Left" Margin="443,67,0,0" d:LayoutOverrides="VerticalAlignment" VerticalAlignment="Top" />
                <TextBox HorizontalAlignment="Left" Margin="537,59,0,0" x:Name="txtAccountDetailsAddress" Text="{Binding addressline, Mode=OneWay, NotifyOnValidationError=true, TargetNullValue='', ValidatesOnExceptions=true}" Width="233" d:LayoutOverrides="VerticalAlignment" Height="24" VerticalAlignment="Top" DataContext="{Binding}" />
                <sdk:Label Content="County" HorizontalAlignment="Left" Margin="443,142,0,143" d:LayoutOverrides="Height" />
                <TextBox HorizontalAlignment="Left" Margin="537,134,0,143" x:Name="txtAccountDetailsCounty" Text="{Binding county, Mode=TwoWay, NotifyOnValidationError=true, TargetNullValue='', ValidatesOnExceptions=true}" Width="233" />
                <sdk:Label Content="Email" HorizontalAlignment="Left" Margin="26,143,0,142" d:LayoutOverrides="HorizontalAlignment, Height" />
                <TextBox HorizontalAlignment="Left" Margin="114,136,0,142" x:Name="txtAccountDetailsEmail" Text="{Binding email, Mode=TwoWay, NotifyOnValidationError=true, TargetNullValue='', ValidatesOnExceptions=true}" Width="233" d:LayoutOverrides="HorizontalAlignment" />

                <sdk:Label Content="First Name" HorizontalAlignment="Left" Margin="26,67,0,0" VerticalAlignment="Top" />
                <TextBox HorizontalAlignment="Left" Margin="114,60,0,0" x:Name="txtAccountDetailsFirstname" Text="{Binding firstname, Mode=TwoWay, NotifyOnValidationError=true, ValidatesOnExceptions=true}" Width="233" Height="23" VerticalAlignment="Top" d:LayoutOverrides="HorizontalAlignment" />

                <sdk:Label Content="Last Name" HorizontalAlignment="Left" Margin="26,104,0,0" VerticalAlignment="Top" />
                <TextBox HorizontalAlignment="Left" Margin="114,97,0,0" x:Name="txtAccountDetailsLastname" Text="{Binding lastname, Mode=TwoWay, NotifyOnValidationError=true, TargetNullValue='', ValidatesOnExceptions=true}" Width="233" Height="23" VerticalAlignment="Top" d:LayoutOverrides="HorizontalAlignment" />
                <sdk:Label Content="Postcode" HorizontalAlignment="Left" Margin="443,0,0,104" VerticalAlignment="Bottom" />
                <TextBox HorizontalAlignment="Left" Margin="537,0,0,104" x:Name="txtAccountDetailsPostcode" Text="{Binding postcode, Mode=TwoWay, NotifyOnValidationError=true, TargetNullValue='', ValidatesOnExceptions=true}" Width="233" Height="24" VerticalAlignment="Bottom" />
                <sdk:Label Content="Town" Margin="0,105,323,0" VerticalAlignment="Top" HorizontalAlignment="Right" />
                <TextBox HorizontalAlignment="Left" Margin="537,0,0,180" x:Name="txtAccountDetailsTown" Text="{Binding town, Mode=TwoWay, NotifyOnValidationError=true, TargetNullValue='', ValidatesOnExceptions=true}" Width="233" Height="24" VerticalAlignment="Bottom" />
                <Button Content="Edit Account Details" HorizontalAlignment="Right" Margin="0,0,26,35" VerticalAlignment="Bottom" Width="136"/>
   开发者_如何学编程         </Grid>

I have set the domain source with the code:

EntityQuery<Web.User> qry =
                    from u in usrClass.getQuery()
                    where u.userId == usrClass.getUserId()
                    select u;
                LoadOperation<Web.User> loadU = usrClass.loadUsersQuery(qry);
                userDomainDataSource.DataContext = loadU.Entities;

I have tried using:

gridAccountDetails.DataContext = userDomainDataSource.DataContext;

and

gridAccountDetails.DataContext = userDomainDataSource.Data;

with no luck

But I would like to refresh the datasource so the new values get put into the textboxes, as these can be changed by the user.

Can anyone provide any information. Thanks

Well you have to tell "gridAccountDetails" that the "Data" of "userDomainDataSource" changed. Most widely used for this is to raise a PropertyChanged event altough I'm not sure how this would fit with your service, possibly consider a buffer from the service to your Grid.

One more thing once binded I wouldn't touch the datacontext of your Grid, you're binding it and then overwriting.