I have created a Telerik report and I am setting the datasource on runtime to an object with some properties and a List. I am using the properties in the page and report header sections and i want to use the list as the details. Now the problem is binding to the List's item properties in the details section. I have played around with the expression builder and it seems that i should access the properties like this :
[=Fields.myList.Item.myProperty]
when i run the program i get a nice big red rectangle with the following error :
An error has occured while processing TextBox 'textBox28':Common Language Runtime detected an invalid program.
I have tried to change different variants of expression which also gives me other errors
[=Fields.myList.myPropery]
An error has occured while processing TextBox 'textBox28': The expression contains object 'myProperty' that is not defined in the current context.
The closest i have gotton was with the object it self, which outputs the object.toString()
[=Fields.myList]
I found a working solution although not what i was looking for, I created my own class with properties and made a List. I then retrieved the data from the db did the changes i wanted to do in the class and set the datasource of the report to the list. This is working quite well.
I struggled with this error:
An error has occured while processing TextBox 'textBox28': The expression contains object 'myProperty' that is not defined in the current context.
The solution I came up with was to make my model object inherit from List. For example:
public class MyReportModel : List<MyEntityDto> {
}
The look of the report wizard makes it seem like this isn't necessary, but I found no other way around this error.
This is for Telerik Reporting Q3 2013.
Related
I have a task to export a repeat grid's content to Excel. I have read an
article, but I still can't realize how to properly use it. I tried to repeat article's steps to provide pzRDExportWrapper, but after I click "Save" button I get the error:
Method: Rule-Obj-Activity instance not found:
Sb-FW-CTrackFW-Work.pzRDExportWrapper. Details: Invalid value for
Activity name passed to ActivityAssembler.
Could anybody give me any suggestions? Thank you.
You invoke activity from another activity which applies to class Sb-FW-CTrackFW-Work. Rule Resolution use primary context Sb-FW-CTrackFW-Work class and try invoke activity pzRDExportWrapper from it and you get error (because rule resolution can't found invoked activity in this class).
Activity pzRDExportWrapper applies to Rule-Obj-Report-Definition class. Try invoke from it.
Try activity step as below:
Call Rule-Obj-Report-Definition.pzRDExportWrapper
Or use step page for this step which defined as applies to Rule-Obj-Report-Definition class(you can declare it on Pages&Classes tab)
Okay. I have resolved the issue (thank you njc). I have two sections on a lone web page.
A context of the first section is my custom data page Co-Name-FW-Data-Search. The Search page has some single value properties which are initialized by an user via an UI.
The second section is a repeat grid section, a report definition as a source. My Search page pointed out in a Pages and Classes tab. Also there is a Page, which is created by report definition and contains results. The report definition takes Search’s values as parameters.
So, I have created an activity and passed the Search page and a Cods-Pega-List MyResultList as parameters. There are some steps in the activity:
Check if Search is null. If true- skip step; else - transfer Search properties into Params props with Data Transform.
Set Param.exportmode = "excel"
Call pzRDExportWrapper with Step Page MyResultList.pyReportDefinition. Pass current parameter page.
P.S.: If it doesn’t work try to play with report definition’s settings.
P.P.S.: An only minus of pzExportWrapper is that it invokes report definition again.
I have an MS ReportViewer report that is bound to a datasource, that is requesting a property that it shouldnt. I have checked all of the fields on the report and I cant find anywhere its used.
Putting a break point on the property shows its definately being called, but I cant find out from where as its the ReportViewer is making the call.
****Is there a way to find out where this property is being called from?**
Here is what I have checked so far:
Stack Trace: shows managed code, checked the disassembly but couldn't see anything obvious.
Call hierarchy shows all the places that property is called from - none of which are on the report.
Update:
Tried n8wrl's suggestion of throwing an exception, but the stack is still on unmanaged code.
Update 2
I have also tried adding Xml and Script ignore tags in case the object as being serialized somewhere but that didn't work (unless they are not the correct tags to ignore serialization?)
Ok, I have come up with a solution. I assumed this had something to do with serialization so I passed the datasource in to a System.Web.Script.Serialization.JavaScriptSerializer.
When serializing the object I found all of the properties that were causing the code to bomb out. I added [ScriptIgnore] tags to these properties to stop them begin serialized as they were not used.
System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
serializer.RecursionLimit = int.MaxValue;
object o = serializer.Serialize(base.CurrentOrder);
I have followed this tutorial for the most part to explain what I am doing. http://www.asp.net/data-access/tutorials/creating-a-business-logic-layer-vb
What i need to do is figure out the best way to approach to be able to update my formview. I do not understand what the tutorial is trying to explain to me so i tried it the way i have updated a gridview before. But I am receiving "No parameterless constructor defined for this object." I tried to debug and view the callstack but it does not really tell me much.
I have my sql stored procedure to update which when executed works fine.
I also have another class in which i reference the application details class
applicant.vb
This is the code in order for when you click the view details link on the gridview it passes you off to another page that shows that applicants details it is within the same applicant.vb class
I am trying to update using the following method on the .aspx page but i receive the following error "No parameterless constructor defined for this object."
Memberdetails.aspx
Without knowing which line of code is causing that error, I can't say for sure, however, my guess is that your error is on this line of code.
_applicantadapter = New applicantTableAdapter
Put an open parentheses after applicantTableAdapter to see the different constructor signatures available to you for that type. I bet you'll see none of the options allow no parameters.
That error means that the object type you are trying to instantiate requires that you include parameter(s) (and you are not).
I found another similar question, but don't quite follow the explanation there, and not sure if it applies the same to me.
I am getting the error:
warning: unable to bind to property 'Description' on class 'Object' (class is not an IEventDispatcher)
this is only when the data is bound to a List as an ArrayList, though. I had it in a Datagrid before (just as an Array) and it did not cause any issue. I'm not expecting to be able to bind any data back to the class 'object' not even sure which object exactly it's referring to.
My list data-provider is an ArrayList.. populated by a result event from an SQL query contained in another class:
private function loadDayComplete():void
{
var Meals:Array = _day.MealResults;
var MealsListResult:ArrayList = new ArrayList(Meals);
MealPanelDataGrid.dataProvider = Meals;
MealListView.dataProvider = MealsListResult;
{
The day class I have is a data holder to get all the data (from several tables) for a 24 hour span.. I have classes for each individual datatype for editing them.
But I'm not sure do I even need to worry about the warning if I don't plan on editing the values? it completely spams the console though whenever I touch anything, so I really would like to get rid of it.
I tried an object proxy as I saw described elsewhere but nothing changed. And I'm pretty confused why it's suddenly an issue on a list component when it wasn't on a datagrid... The text is in label fields right now anyway, which can't even be edited.
The objects causing this warning are probably items inside Meals array.
Make sure that these items are strongly typed (Data Transfer Objects / Value Objects patterns) and that Description field is marked [Bindable].
Depending on the remoting mechanism you are using you may be able to use something like makeObjectsBindable flag which replaces returned Object items with bindable ObjectProxy instances.
But I'll advise strong typing anyway.
You can get rid of it by making your dataProvider an EventDispatcher: ObjectProxy is an EventDispatcher. It will automatically wrap your data to a specified or infinite depth (default behavior).
metaPanelDataGrid.dataProvider = new ObjectProxy(meals);
It's basically the same thing as with ArrayCollection but deeper.
I'm using XtraGrid of DevExpress 2.9.5 to display a blotter of dynamic set of lines. The blotter is integrated into another application, this is why it has to be based on UserControl class and also implement a couple of custom interfaces.
public partial class BlotterForm : UserControl, ISMMdiEmbeddable, ISMAssociatedMFCWindow
{
private BindingList<BlotterTrade> fDeals;
....
}
As the data is binded to control using BindedList, any change should be reflected in the form automatically. And if I try to add new line to fDeals like follows:
public void AddDeal()
{
fDeals.Add(new BlotterTrade(1,2,3));
}
... i can see the line, but it's content is rubbish.
I tried to do the same in a small test application. It works ok with only difference that the blotter in test application is based on DevExpress.XtraEditors.XtraForm. To me it looks now that the form of original blotter doesn't overload some method or miss some event. But I cannot find out what exactly is missed.
Can somebody tell me what I do wrong or don't do?
Thanks.
A couple of things:
BindingList doesn't always work too well with DevExpress, and it's suggested to use XPCollection instead.
Do you have any more info about how you setup your columns in the xtragrid? If you use incorrect field names in the column, then they won't show what you're looking for.
If the params you're using (1, 2, 3) are ids stored as fkeys to other objects (not sure if you're using xpo or not) then they won't show up correctly either (there'll likely be a '+' in the cell instead of any values).
[aside] be sure that blottertrade implements INotifyPropertyChanged for better interaction with the grid.
Thanks to everybody for the answers and comments. I think I sorted out the problem. It was actually related to interaction between native C++ and C# layers in my application. The object that was supposed to be displayed in XtraGrid was created in C++ layer, the grid was displayed asynchronously with object construction/deconstruction, that's why at the moment when the grid was ready to display it, the object itself didn't exist. Hence the rubbish. It's good the grid itself was not crashing or firing exceptions.