I have a complex list as a resource in the following form:-
sectionList
Sections
Section 0
Section 1
.
.
Section 12
Each of those have few properties like 'Name', ie. Section 0 have a property 'Name' and so on.
In my Xaml i have a ComboBox which i want to bind it's ItemsSource to get the Name property of each Section in this ComboBox. When i use ItemsSource="{Binding Path=Section}" i get only a list of the Types not the actual Name property. With that i mean the list looks like below:-
AppName.ClassName+Section (This is the Type)
AppName.ClassName+Section
.
.
.
AppName.ClassName+Section
So my question is, how to get the property Name instead of the Type in this ComboBox?
Hope this an enough discription otherwise i will be more than glad to explain more.
Use 'DisplayMemberName' on the combobox to pass in the name of the field you wish to display.
See WPF Combobox DisplayMemberPath for a usage example (use the solution, not the question as it is incorrect!)
Related
I have some ExtJs component.
I set itemId for it, but id is autogenerated.
Now Ext.getCmp('autogenerated-id') returns my component.
But Ext.ComponentQuery.query('#autogenerated-id') returns an empty array.
But:
Ext.ComponentQuery.query('[id=assets-information-form-1918]') again returns my component. :)
I use ExtJs 6.5.3 classic.
It seems like itemId config property hides autogenerated id from Ext.ComponentQuery, so they become mutually exclusive.
I don't need other means for search or advice to set id for the component, to write letter to Sencha support or to write post on their forum.
I need:
Means to force my Ext.ComponentQuery.query('#autogenerated-id') to
find the Component for which getId() returns 'autogenerated-id'.
If it is not possible by design, I need a link to some documentation
describing this behavior, a link to some bug report, or a filename and line number in ExtJs sources + a little snippet copy/paste from there.
From the documentation
Summary Provides searching of Components within Ext.ComponentManager
(globally) or a specific Ext.container.Container on the document with
a similar syntax to a CSS selector. Returns Array of matching
Components, or empty Array.
Ext.ComonpentQuery.query('#itemId') returns and array. Your cold above is using the auto-generated id of the component. The # indicates to query based on the component itemId and not the component id.
Try
Ext.ComponentQuery.query('assets-information-form-1918');
which will return an array, as noted in the documentation.
Ext.getCmp()
This is shorthand reference to Ext.ComponentManager#get. Looks up an
existing Ext.Component by id
Therefore it returns the component object.
Ext.ComponentQuery.query('#itemId')[0] would return the first object in the array.
Ext.ComponentQuery is the Sencha preferred method because it is more powerful when used as it does return an array so you an also query items by xtype and other attributes.
In a Umbraco 7 solution, i have a Tags Content picker on all pages. Pages can with this, set tags on each page.
I then want to get alle pages, within the intire site, that has, lets say tag 111 (id, not name).
I have tried with:
var ids = Model.MacroParameters["tags"]; //the tags to show
CurrentPage.AncestorOrSelf(1).Descendants().Where(x => ids.Contains(x.tags.ToString()));
But that gives me the error:
Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type
Whats the correct way?
Solved it with;
Umbraco.Content(rootId).Descendants().Where("tags.Contains(#0)", ids);
You have a few options, depending on whether you prefer a dynamic or strongly typed view model.
Strongly Typed API
Umbraco.TypedContentAtRoot().Descendants().Where(x => x.tags.Contains(ids));
Dynamic API
Umbraco.ContentAtRoot().Descendants().Where("tags.Contains(#0)", ids);
Please note that the Contains statement may give you inconsistent results, as the tags property seems to be returning a comma separated list. In that case you can try splitting the string or install the Core Property Value Converters package and get the tags as IEnumerable<IPublishedContent>
Always try to avoid using Descendants, especially on the root node.
To get the tags for a property:
ApplicationContext.Current.Services.TagService.GetTagsForProperty(Model.Content.Id, "propertyname")
To find content with a specific tag:
ApplicationContext.Current.Services.TagService.GetTaggedContentByTag("tag")
I'm trying to create a dynamic survey application in Prime Faces. I have a list of Question Objects that each contains a list of AnswerChoices. These are given to the f:selectItems value attribute. This is fine. The question object also contains a List of selectedValues which is given to the relevant selectOne/many component.
Because I'm looking to be generic, there will be questions that have multiple selected values and also some that have only one selected value. I wanted to be able to point the selectOne and selectMany components to the List of strings within the relevant Question object that represents the selectedValues.
This works ok for the selectMany component, but not for the selectOne component which needs to be pointed at a singular object rather than a list. Is there an easy way around this that I'm missing - as I'd like to only have one object representing the selectedValues if possible
You can use brace notation to bind the value to a list/array item at a specific index. The below example binds the value to the 1st item of the list/array.
<h:selectOneMenu value="#{bean.selectedAnswers[0]}" />
There's however a caveat: you need to prepare the list/array with the single item yourself during bean's (post)construction. JSF/EL won't do that in case of a <h:selectOneMenu>.
E.g.
#PostConstruct
public void init() {
selectedAnswers = new ArrayList<Answer>();
selectedAnswers.add(null);
}
It doesn't harm to reuse this preinitializated property for UISelectMany components by the way.
Value field in ListBox table has String[64] type. Is there posible to expand this 64-characters limitation? I need to store some directory pathes there.
It's probably (never tried) possible in WiX to override the default schema of he ListBox table. I know in InstallShield I just go to the direct editor and adjust it. WiX has a template schema that is used to build the MSI and you might be able to use the Table element to redefine it. Or it might just give you an error message saying you are defining a well known table.
However, I'm not sure if there would be any side effects in the ListBox control if you exceed 64 char. I don't see anything in the MSI SDK saying what's allowed so I guess your milage may vary.
Here's a trick that you might like though. It's called the evil twin dialog trick. See, in MSI there's a bug that UI elements don't refresh very well and this trick works around it. Consider this:
Dialog1 with ListBox associated to property TESTPROP and Items One value 1 and Two value 2.
Textlabel that displayes [TESTPROP].
When start the dialog the text label is empty after clicking a row in the listbox. Click back and next and suddenly it has the expected text of 1 and 2.
Now create a clone of this dialog ( Dialog2 ) and put a control event on the Listbox of dialog1 that says NewDialog Dialog2 condition=1 and put a control event on the Listbox of dialog2 that says NewDialog Dialog1 condition = 1
Now when you run it the screen refreshes ( although with a big of an ugly flicker ) See it looks like it's the same dialog only it's really the evil twin dialog that's being transitioned to so that the data refreshes correctly.
Now for extra credit use your custom actions to do something like this
ListBox Item 1 Text C:\Pro...Foo\Bob value LISTBOXDIRPROP1
ListBox Item 2 Text C:\Pro...Foo\Ed value LISTBOXDIRPROP2
Property LISTBOXDIRPROP1 = C:\Program Files\Foo\Bob
Property LISTBOXDIRPROP2 = C:\Program Files\Foo\Ed
Then set your TextLabel to display [[TESTPROP]]. This tells it to get deference the value of the value of the property. In other words, TESTPRO = LISTBOXDIRPROP1 = C:\Proggram Files\Foo\Bob
This trick would allow you to display a line that fits the 64 char constraint yet gives additional information when the user selects it.
In the label we have item.ID + '-'+ item.Description
the value is item which is the object returned from the service.
When a selection is made 001-MyChoice for ex. from the autocomplete, the value which is the datacontract object is bound to the autocomplete field as [Object object]. How can I get 001-MyChoice to be bound for the selection ???
Pls help..
It's difficult to tell when you haven't posted any code to review. What format is your data returned from the service? JSON, XML?
I'm sure you're already looked at this link, but here it is just in case:
http://jqueryui.com/demos/autocomplete/#remote
Post some sample code of your js and some sample data of what your service returns for a better answer.
The autocomplete tags returned from your web service need to contain the tag 'term' and I think "ID", then the default call can help pull them out. Although not a perfect example if you look at the Jasonp example in the jQueryUI docs, that may help.
This is from memory but something like
{"term":"dog", "ID": "123"}, {"term":"cat","ID": "2"}
So you have 001-MyChoice as the label and you want it bound as the value?
Then don't specify the object returned as the value. Label and value are not required by the autocomplete. You can specify both if you want one in the dropdown select (label) and the other (value) used as the value of the select.
If you want the select item and the value to be the same, then put the same item in either the label or the value property.
From the jquery autocomplete docs:
The label property is displayed in the suggestion menu. The value will be inserted into the input element after the user selected something from the menu. If just one property is specified, it will be used for both, eg. if you provide only value-properties, the value will also be used as the label.
If you need to use the datacontract object, then just assign it to a variable in the select callback function of the autocomplete and you can use it as that.