I have a business object in my XAF application which inherits from the standard Scheduler'Event' class. In the list view I get the default scheduler list view where the boxes display the descriptive text. I want to display additional text in those boxes. I looked around and found "ScheduleControl.InitAppointmentDisplayText" event but could not figure out how to implement it within my class.
You can implement the following code within a view controller within the Module.Win project.
namespace Project.Module.Win.Controllers{
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Scheduler.Win;
using DevExpress.XtraScheduler;
public partial class SchedulerViewController : ObjectViewController<ListView, Project.Module.BusinessObjects.Event>
{
public SchedulerViewController()
{
this.InitializeComponent();
this.RegisterActions(this.components);
}
protected override void OnViewControlsCreated()
{
base.OnViewControlsCreated();
SchedulerListEditor listEditor = View.Editor as SchedulerListEditor;
if (listEditor != null)
{
SchedulerControl scheduler = listEditor.SchedulerControl;
if (scheduler != null)
{
scheduler.InitAppointmentDisplayText += new AppointmentDisplayTextEventHandler(this.SchedulerControl_InitAppointmentDisplayText);
}
}
}
private void SchedulerControl_InitAppointmentDisplayText(object sender, AppointmentDisplayTextEventArgs e)
{
MyEventObject myEventObject = this.ObjectSpace.GetObjectByKey<MyEventObject>(e.Appointment.Id);
if (myEventObject != null)
{
e.Text = string.Concat("Text Goes Here - ", myEventObject.FieldValue);
}
}
}
Related
This is a know error when using C# expressions in windows workflow. The article at https://learn.microsoft.com/en-us/dotnet/framework/windows-workflow-foundation/csharp-expressions#CodeWorkflows explains the reason and how to fix it. It all works fine for me in standard workflows, but as soon as I add a custom NativeActivity to the WF, I get that same error again !
Below the code of how I load the XAML workflow and the simple NativeActivity (which is the ONLY activity in the test workflow and inside that activity is a simple assign expression).
Loading and invoking WF via XAML:
`XamlXmlReaderSettings settings = new XamlXmlReaderSettings()
{
LocalAssembly = GetContextAssembly()
};
XamlReader reader = reader = ActivityXamlServices.CreateReader(new XamlXmlReader(fileURL, settings));
ActivityXamlServicesSettings serviceSettings = new ActivityXamlServicesSettings
{
CompileExpressions = true
};
var activity = ActivityXamlServices.Load(reader, serviceSettings);
WorkflowInvoker.Invoke(activity);`
Doing it in code throws same Exception:
Variable<string> foo = new Variable<string>
{
Name = "Foo"
};
Activity activity = new Sequence
{
Variables = { foo },
Activities =
{
new TimeExecuteUntilAborted
{
Activities =
{
new Assign<string>
{
To = new CSharpReference<string>("Foo"),
Value = new CSharpValue<string>("new Random().Next(1, 101).ToString()")
}
}
}
}
};
CompileExpressions(activity);//the method from the article mentioned above
WorkflowInvoker.Invoke(activity);
The Native Activity:
[Designer("System.Activities.Core.Presentation.SequenceDesigner, System.Activities.Core.Presentation")]
public sealed class TimeExecuteUntilAborted : NativeActivity
{
private Sequence innerSequence = new Sequence();
[Browsable(false)]
public Collection<Activity> Activities
{
get
{
return innerSequence.Activities;
}
}
[Browsable(false)]
public Collection<Variable> Variables
{
get
{
return innerSequence.Variables;
}
}
protected override void CacheMetadata(NativeActivityMetadata metadata)
{
metadata.AddImplementationChild(innerSequence);
}
protected override void Execute(NativeActivityContext context)
{
context.ScheduleActivity(innerSequence);
}
}
Your TimeExecutedUntilAborted class seems to be the culprit. I was able to swap in one of my own template NativeActivities instead and your workflow executed fine with the expressions. I'm guessing that your class is causing an issue in the compiler method when it parses your code. I used this doc as an example for my NativeActivity: https://msdn.microsoft.com/en-us/library/system.activities.nativeactivity(v=vs.110).aspx.
Sizzle Finger's answer is no solution but pointed me into the right direction to simply check what is different. It came out that the simple call to the base class method was missing:
protected override void CacheMetadata(NativeActivityMetadata metadata)
{
base.CacheMetadata(metadata); // !! This needs to be added
metadata.AddImplementationChild(innerSequence);
}
I'm a newbie in ASP.NET and I'm stuck at populating a List when web page load.
I have a class that, when instantiated, will add some objects into a list. This class has a method to add objects to a list (I made this a method because I need to reuse it later). This is the code for this class:
public class Task()
{
private List<ObjectA> objList;
....// other variables and properties
public Task()
{
objList = new List<ObjectA>();
// first add 2 obj into the list
AddObjToList(objList);
AddObjToList(objList);
}
public void AddObjToList(List<ObjectA> objList)
{
bool exist = false;
ObjectA obj = new ObjectA(); // each obj has unique properties
foreach(var o in objList)
{
if(o.objName == obj.objName)
{
exist = true;
break;
}
}
if(!exist)
{
objList.add(obj);
}
}
}
I have a web page that, when loaded, I want it to populate the objList with 2 starting objects. This is my code behind for the web page:
protected void Page_Load(object sender, EventArgs e)
{
Task newTask = new Task();
// the following label control is to check the number of
// elements in the List
lblMSG.Text = newTask.getObjList.Count.ToString();
}
The problem is, when I run in debug mode, the list is populated with 2 objects just as I wanted. But when not in debug mode, when the page loaded, the label showed that the list has only 1 object. I tried to call the new Task() with isPostBack but the result is the same. What did I do wrong? What could I do to make it work?
I'm implementing a DynamicItemStart button inside a Menu Controller. I'm loading the dynamic items for this button when Visual Studio starts. Everything is loaded correctly so the initialize method is called an I see all the new items in this Dynamic button. After the package is completely loaded I want to add more items to this Dynamic button, but since the package is already loaded the initialize method is not called again and I cannot see the new items in this Dynamic button. I only see the ones that were loaded when VS started.
Is there any way that I can force the update of this Dynamic button so it shows the new items?. I want to be able to update the VS UI after I added more items but outside the Initialize method.
The implementation I did is very similar to the one showed on this msdn example:
http://msdn.microsoft.com/en-us/library/bb166492.aspx
Does anyone know if an Update of the UI can be done by demand?
Any hints are greatly appreciated.
I finally got this working. The main thing is the implementation of a derived class of OleMenuCommand that implements a new constructor with a Predicate. This predicate is used to check if a new command is a match within the DynamicItemStart button.
public class DynamicItemMenuCommand : OleMenuCommand
{
private Predicate<int> matches;
public DynamicItemMenuCommand(CommandID rootId, Predicate<int> matches, EventHandler invokeHandler, EventHandler beforeQueryStatusHandler)
: base(invokeHandler, null, beforeQueryStatusHandler, rootId)
{
if (matches == null)
{
throw new ArgumentNullException("Matches predicate cannot be null.");
}
this.matches = matches;
}
public override bool DynamicItemMatch(int cmdId)
{
if (this.matches(cmdId))
{
this.MatchedCommandId = cmdId;
return true;
}
this.MatchedCommandId = 0;
return false;
}
}
The above class should be used when adding the commands on execution time. Here's the code that creates the commands
public class ListMenu
{
private int _baselistID = (int)PkgCmdIDList.cmdidMRUList;
private List<IVsDataExplorerConnection> _connectionsList;
public ListMenu(ref OleMenuCommandService mcs)
{
InitMRUMenu(ref mcs);
}
internal void InitMRUMenu(ref OleMenuCommandService mcs)
{
if (mcs != null)
{
//_baselistID has the guid value of the DynamicStartItem
CommandID dynamicItemRootId = new CommandID(GuidList.guidIDEToolbarCmdSet, _baselistID);
DynamicItemMenuCommand dynamicMenuCommand = new DynamicItemMenuCommand(dynamicItemRootId, isValidDynamicItem, OnInvokedDynamicItem, OnBeforeQueryStatusDynamicItem);
mcs.AddCommand(dynamicMenuCommand);
}
}
private bool IsValidDynamicItem(int commandId)
{
return ((commandId - _baselistID) < connectionsCount); // here is the place to put the criteria to add a new command to the dynamic button
}
private void OnInvokedDynamicItem(object sender, EventArgs args)
{
DynamicItemMenuCommand invokedCommand = (DynamicItemMenuCommand)sender;
if (null != invokedCommand)
{
.....
}
}
private void OnBeforeQueryStatusDynamicItem(object sender, EventArgs args)
{
DynamicItemMenuCommand matchedCommand = (DynamicItemMenuCommand)sender;
bool isRootItem = (matchedCommand.MatchedCommandId == 0);
matchedCommand.Enabled = true;
matchedCommand.Visible = true;
int indexForDisplay = (isRootItem ? 0 : (matchedCommand.MatchedCommandId - _baselistID));
matchedCommand.Text = "Text for the command";
matchedCommand.MatchedCommandId = 0;
}
}
I had to review a lot of documentation since it was not very clear how the commands can be added on execution time. So I hope this save some time whoever has to implement anything similar.
The missing piece for me was figuring out how to control the addition of new items.
It took me some time to figure out that the matches predicate (the IsValidDynamicItem method in the sample) controls how many items get added - as long as it returns true, the OnBeforeQueryStatusDynamicItem gets invoked and can set the details (Enabled/Visible/Checked/Text etc.) of the match to be added to the menu.
I'm experiencing some problems and right now I don't know how to solve it. The web control simply updates a clock represented by a label every second. My issue is that the web control exposes a property called 'Formato' where the user can select to display in format 12 or 24 hours. This is done with an enum type where in spanish Doce means 12 and Veinticuatro means 24. This is the code for the server control:
namespace Ejercicio2RelojControl
{
public enum _FormatoHora
{
Doce,
Veinticuatro
}
[DefaultProperty("FormatoHora")]
[ToolboxData("<{0}:Ejercicio2RelojControl runat=server></{0}:Ejercicio2RelojControl>")]
[ToolboxBitmap(typeof(Ejercicio2RelojControl), "Ejercicio2RelojControl.Ejercicio2RelojControl.ico")]
//[Designer("Ejercicio2RelojControl.Ejercicio2RelojControlDesigner, Ejercicio2RelojControl")]
public class Ejercicio2RelojControl : WebControl
{
public Ejercicio2RelojControl()
{
}
[
//Bindable(true),
Category("Appearance"),
//DefaultValue(_FormatoHora.Doce),
Description(""),
]
public virtual _FormatoHora FormatoHora
{
get
{
//object t = ViewState["FormatoHora"];
//return (t == null) ? _FormatoHora.Doce : (_FormatoHora)t;
object obj2 = this.ViewState["_FormatoHora"];
if (obj2 != null)
{
return (_FormatoHora)obj2;
}
return _FormatoHora.Doce;
}
set
{
ViewState["_FormatoHora"] = value;
}
}
//Create one TimerControl
Timer timer = new Timer();
private Label clockLabel = new Label();
// Declare one Updatepanel
UpdatePanel updatePanel = new UpdatePanel();
// Now override the Load event of Current Web Control
protected override void OnLoad(EventArgs e)
{
//Text = "hh:mm:ss";
// Create Ids for Control
timer.ID = ID + "_tiker";
clockLabel.ID = ID + "_l";
// get the contentTemplate Control Instance
Control controlContainer = updatePanel.ContentTemplateContainer;
// add Label and timer control in Update Panel
controlContainer.Controls.Add(clockLabel);
controlContainer.Controls.Add(timer);
// Add control Trigger in update panel on Tick Event
updatePanel.Triggers.Add(new AsyncPostBackTrigger() { ControlID = timer.ID, EventName = "Tick" });
updatePanel.ChildrenAsTriggers = true;
// Set default clock time in label
clockLabel.Text = DateTime.Now.ToString("h:mm:ss tt");
//clockLabel.Text = DateTime.Now.ToString("H:mm:ss");
// Set Interval
timer.Interval = 1000;
// Add handler to timer
timer.Tick += new EventHandler<EventArgs>(timer_Tick);
updatePanel.RenderMode = UpdatePanelRenderMode.Block;
//Add update panel to the base control collection.
base.Controls.Add(updatePanel);
}
protected override void RenderContents(HtmlTextWriter output)
{
output.Write(FormatoHora);
}
void timer_Tick(object sender, EventArgs e)
{
// Set current date time in label to move current at each Tick Event
clockLabel.Text = DateTime.Now.ToString("h:mm:ss tt");
//clockLabel.Text = DateTime.Now.ToString("H:mm:ss");
}
}
}
Now it's time to test the custom control in an asp.net web application.
<cc1:Ejercicio2RelojControl ID="Ejercicio2RelojControl1" runat="server" />
Works great! BUT when I add the property "Formato" fails at compile time:
<cc1:Ejercicio2RelojControl ID="Ejercicio2RelojControl1" runat="server" Formato="Doce" />
Compiler Error Message: CS0117: 'Ejercicio2RelojControl.Ejercicio2RelojControl' does not contain a definition for 'FormatoHora'
Why is the property Formato making the web app crash at compile time?
Thanks a lot.
EDIT:
namespace Ejercicio2RelojControl
{
public enum FormatoHora
{
Doce,
Veinticuatro
}
[DefaultProperty("FormatoHora")]
[ToolboxData("<{0}:Ejercicio2RelojControl runat=server></{0}:Ejercicio2RelojControl>")]
public class Ejercicio2RelojControl : WebControl, INamingContainer
{
public FormatoHora FormatoHora
{
get
{
object obj2 = this.ViewState["FormatoHora"];
if (obj2 != null)
{
return (FormatoHora)obj2;
}
return FormatoHora.Doce;
}
set
{
ViewState["FormatoHora"] = value;
}
}
As you can see I've changed the public property. Now the error has changed. Is the following:
Compiler Error Message: CS0120: An object reference is required for the non-static field, method, or property 'Ejercicio2RelojControl.Ejercicio2RelojControl.FormatoHora.get'
Any help appreciated. Thanks
EDIT 2:
I've discovered that the problem is on the set {}. If I comment it, all is working fine but then I cannot change FormatoHora between 12 and 24 because of is read only due to only get{} is implemented. Any help with the implementation of set{} ?
I am here for giving you the solution:
You are using the same name for the namespace and for the webcontrol (Ejercicio2RelojControl) . Simply change that and your code will work fine.
Hope it helps, despite the fact some years have passed :)
I need to databind formatted text to a RichTextBox. For formatting it seems that I will have to create a series of Runs with their specific formats and then add them to a paragraph and add it to the blocks property on the RichTextBox. I tried to bind a paragraph property to Blocks but it doesn't seem to allow that. Paragraph doesn't have an itemsource to bind it to a list of Runs. How can I possibly databind the list of Runs to a RichTextBox Widget ?
Thanks
Here is the solution I came up with. I created a custom RichTextViewer class and inherited from RichTextBox.
using System.Windows.Documents;
using System.Windows.Markup;
using System.Windows.Media;
namespace System.Windows.Controls
{
public class RichTextViewer : RichTextBox
{
public const string RichTextPropertyName = "RichText";
public static readonly DependencyProperty RichTextProperty =
DependencyProperty.Register(RichTextPropertyName,
typeof (string),
typeof (RichTextBox),
new PropertyMetadata(
new PropertyChangedCallback
(RichTextPropertyChanged)));
public RichTextViewer()
{
IsReadOnly = true;
Background = new SolidColorBrush {Opacity = 0};
BorderThickness = new Thickness(0);
}
public string RichText
{
get { return (string) GetValue(RichTextProperty); }
set { SetValue(RichTextProperty, value); }
}
private static void RichTextPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
{
((RichTextBox) dependencyObject).Blocks.Add(
XamlReader.Load((string) dependencyPropertyChangedEventArgs.NewValue) as Paragraph);
}
}
}