T-SQL ESSENTIALS in .net C#

Display 2d Data Matrix barcode in .net C# T-SQL ESSENTIALS

let rec cases supp = seq { match supp with | [] -> yield Map.empty | v::rest -> yield! rest |> cases |> Seq.map (Map.add v false) yield! rest |> cases |> Seq.map (Map.add v true) } let truthTable x = x |> support |> Set.toList |> cases |> Seq.map (fun env -> env,eval env x) let satisfiable x = x |> truthTable |> Seq.exists(fun (env,res) -> res) let tautology x = x |> truthTable |> Seq.forall (fun (env,res) -> res) let tautologyWithCounterExample x = x |> truthTable |> Seq.tryFind (fun (env,res) -> not res) |> Option.map fst let printCounterExample = (function None -> printfn "tautology verified OK" | Some env -> printfn "tautology failed on %A" (Seq.toList env)) The types of these functions are as follows: val val val val val val val val eval : Map<Var,bool> -> Prop -> bool support : Prop -> Set<Var> cases : 'a list -> seq<Map<'a,bool>> when 'a : comparison truthTable : Prop -> seq<Map<Var,bool> * bool> satisfiable : Prop -> bool tautology : Prop -> bool tautologyWithCounterExample : Prop -> Map<Var,bool> option printCounterExample : seq<'a> option -> unit

// Clear the input txtAgent.Text = ""; } // Update the grid lstLeads.Items[lstLeads.SelectedIndex] = l; lstLeads.Items.Refresh(); WorkflowApplication i = new WorkflowApplication(new EnterLead()); SetupInstance(i); i.Load(id); try { i.ResumeBookmark("GetAssignment", l); } catch (Exception e2) { AddEvent(e2.Message); } } } private void LoadExistingLeads() { LeadDataDataContext dc = new LeadDataDataContext(_connectionString); dc.Refresh(RefreshMode.OverwriteCurrentValues, dc.Leads); IEnumerable<Lead> q = dc.Leads .Where<Lead>(x => x.Status == "Open" || x.Status == "Assigned"); foreach (Lead l in q) { AddNewLead(l); } } private void SetupInstance(WorkflowApplication i) { // Setup the instance store i.InstanceStore = _instanceStore; // Setup the PersistableIdle event handler i.PersistableIdle = (waiea) => PersistableIdleAction.Unload; // Setup the connection string i.Extensions.Add(_dbExtension); // Display the accumulated comments i.Completed = (wacea) => {

The preceding command uses the owa virtual directory, but it could have used Exchange, Public, Exchweb or Exadmin as well. To re-create the directory, use the following command (again replacing owa in the quoted portion of the command with the specified virtual directory you are re-creating:

<Grid x:Name="LayoutRoot" Background="White"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition Height="50" /> </Grid.RowDefinitions> <toolkit:WrapPanel Name="wrapPanel1" /> <Button x:Name="addItem" Click="addItem_Click" Content="Add New Item" Grid.Row="1" /> </Grid> </UserControl> 3. Now we need to add the code behind the button click event. Right click on addItem_Click in the XAML and choose Navigate to Event Handler. This will take you to the code behind of MainPage.xaml. Add the following code within the addItem_Click event handler. private void addItem_Click(object sender, RoutedEventArgs e) { Rectangle newRect = new Rectangle(); newRect.Width = 50; newRect.Height = 50; newRect.Margin = new Thickness(5); newRect.Fill = new SolidColorBrush(Color.FromArgb(255, 0, 0, 0)); wrapPanel1.Children.Add(newRect); } 4. We can now test the application. Once the application appears, start pressing the Add New Item button and watch the items appear horizontally as well as wrap to a new row when a new item cannot fit within the width of the control (see Figure 3-19).

In 2, you were exposed to what properties are and how to use them. Properties are similar to something you may already be familiar with environment variables. The main difference is that a property is defined within the scope of an MSBuild execution, whereas an environment variable is available throughout the machine. In your builds, you may want to reference these environment variables, and doing so is easy! To use the value of an environment variable, you simply refer to that just as you would if it were a property. Refer to the following target, which prints the value for the Path environment variable: <Target Name="PrintSystemPath"> <Message Text="Path: $(Path)"/> </Target> To invoke this target at the command line, execute >msbuild MetaDataEx.csproj /t:PrintSystemPath. Figure 3-15 shows the output from this invocation.

public interface IServerChannelSink { IServerChannelSink NextChannelSink { get; } ServerProcessing ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream, ref IMessage responseMsg, ref ITransportHeaders responseHeaders, ref Stream responseStream); void AsyncProcessResponse(IServerResponseChannelSinkStack sinkStack, object state, IMessage msg, ITransportHeaders headers, Stream stream); Stream GetResponseStream(IServerResponseChannelSinkStack sinkStack, object state, IMessage msg, ITransportHeaders headers); }

You will notice that this class reads the data from an XML file called PeopleCollection.xml. This XML file contains four records, each of which corresponds to an attribute of the Person class. Here are the entries in that file: