WPF Discussion Boards

Mycroft Holmes6-Dec-11 14:21

6-Dec-11 14:21

Hmm I find clarity can be a major issue, I find myself repeating a description using slightly different wording just to see the light of understanding appear in their eyes.

If you used a collection of objects what property would you use to display in the treenode?

Never underestimate the power of human stupidity
RAH

SledgeHammer016-Dec-11 14:25

6-Dec-11 14:25

Well, OP didn't get your response either Smile | :)

. Now you and I are actually on the same page, but just arguing about semantics haha. Yeah, I guess you can't really do it with a generic object collection... in my original response, I suggested the use of a common base class and putting the properties there... but you really have to structure the properties so you have them for both types.

Mycroft Holmes6-Dec-11 16:22

6-Dec-11 16:22

SledgeHammer01 wrote:
Well, OP didn't get your response either

I know- as I said clarity can be an issue with me.

I'll be extremely interested in Kevin's ultimate solution to see if it is something new!

Never underestimate the power of human stupidity
RAH

Kevin Marois6-Dec-11 14:08

6-Dec-11 14:08

I don't agree with that. I have other projects with collections of different types, and this type of data template works fine. I just can't see what's wrong here.

Everything makes sense in someone's mind

Mycroft Holmes6-Dec-11 14:18

6-Dec-11 14:18

I'll be interested in your eventual solution.

Never underestimate the power of human stupidity
RAH

SledgeHammer016-Dec-11 14:21

6-Dec-11 14:21

See my other response. You can have multiple object types, but you must combine them into a SINGLE collection. Right now you have 2 separate collections a FolderCollection and a FileCollection or whatever you call them. You need to have a generic ObjectCollection or whatever and use the template to decide how to render... or you can manually insert into the tree, but thats lame. Just throwing that out there as an option though Smile | :)

SledgeHammer016-Dec-11 13:53

6-Dec-11 13:53

I don't think you can do it the way you are trying to. HierachialDataTemplate only supports a single ItemsSource at any given level. What you want to do is define your models something like:

FileModelBase
FileModel
FolderModel

and put all the common code into the base class. Then, instead of having a Folders collection and a Files collection, you just have a single collection that holds both types. You can use triggers in your data template to change the rendering based on the type. Well, not on the type, but maybe a bool or enum in FileModelBase.

Kevin Marois8-Dec-11 7:12

8-Dec-11 7:12

Well, you and Mycroft were right. My confusion came from another project I did where I had 2 collections on each object. However, I went back & found that in that project I wasn't displaying the second collection.

I implemented Mycroft's solution - create a single class with a Children collection.

Thanks to you both.

Everything makes sense in someone's mind

Re: Popup vs Tooltip

Pete O'Hanlon6-Dec-11 4:48

Pete O'Hanlon

6-Dec-11 4:48

Superficially, you could think that they are the same thing (indeed, a tooltip behaves just like a popup with the TooltipService controlling the lifetime and display of the popup). They aren't the same thing though - basically, a popup allows you a lot more programattic control over where it appears, how it's triggered and how it's unloaded, etc.

If you just want to display a little bit of text (possibly with an image) against a control, use a tooltip. If you want something that can be triggered over the top of something else, and can do things such as handling interaction, use a popup.

Forgive your enemies - it messes with their heads

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Re: Popup vs Tooltip

SledgeHammer016-Dec-11 10:42

6-Dec-11 10:42

Actually, there are a few other subtle differences:

* Tooltips aren't allowed to have logical or visual parents while Popups can
* Tooltips are content controls and have a content template while a Popup does not

Re: Popup vs Tooltip

SledgeHammer016-Dec-11 11:35

Best way to save/load data locally. WPF

6-Dec-11 11:35

The second point is WAY more important Smile | :)

.

With a ContentControl, you specify your business object (of ANY type -- note it is system.object) as the content and use the content template to specify how to render it. With a Popup, there is no such mechanism, you can't specify your business object as the content because only visuals are allowed. So you would have to hard code the Popup to your business object. I suppose you could template the whole thing and swap out templates at runtime, but thats just re-inventing the wheel of what a ContentControl already does.

Paul Harsent5-Dec-11 3:51

Paul Harsent

5-Dec-11 3:51

Afternoon,

I was wondering what people though the best way to save data locally, I dont want to export to txt files. When I was developing for Windows phone, I used isoloated storage, but ov this isnt available.

Thanks.

Re: Best way to save/load data locally. WPF

Pete O'Hanlon5-Dec-11 4:40

Pete O'Hanlon

5-Dec-11 4:40

Of course IsolatedStorage is available in WPF. If it isn't then there's some smoke and mirrors going on in our current codebase which uses it.

Forgive your enemies - it messes with their heads

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Re: Best way to save/load data locally. WPF

SledgeHammer015-Dec-11 5:04

Re: Best way to save/load data locally. WPF

5-Dec-11 5:04

Just use the application settings. Thats what they are there for Smile | :)

. Unless its big data, then you shouldn't store it there. You didn't say what kind of data you want to store.

John-ph6-Dec-11 0:29

John-ph

6-Dec-11 0:29

1. Create an object that describes your data
2. Serialize it as XML file
3. If your data contains any bitmaps, add those to a seperate folder
4. zip the whole content and add the file extension that is associated with your WPF application
5. save the file

do the reverse order to get it loaded. select the File, Unzip and deserialize

- Regards -
J O N

A good thing is a bad thing if it keeps you from the best thing. - Dr. Adrian Rogers

wpf grid

akstemptation4-Dec-11 23:32

akstemptation

4-Dec-11 23:32

Hi,

I want to define a grid. Over which when i move/drag some user control like calender it triggers some event.

Re: wpf grid

Abhinav S5-Dec-11 18:21

Abhinav S

5-Dec-11 18:21

Have a look at[^] Drag drop facilities as provided by WPF.

Web service reference in app.config file issue

^That's Aragon4-Dec-11 19:43

^That's Aragon

4-Dec-11 19:43

Hi,

I have added a web service reference in my WPF application. VS automatically adds some binding tags and endpoint address like http://mydomain.com/services/sample.asmx in the app.config file.Now when I deploy this application with setup project and install it, application folder contains myapplication.exe.config file which displays this endpoint address and other binding details. I need to hide this details from the user. As user may change this details.

1. Should I hide binding details anyhow? so that it will not be visible to the application user.
2. Can I move this reference to any other file or may be in the project dll itself?

Your help would be appreciated.

Regards

Mycroft Holmes4-Dec-11 20:25

4-Dec-11 20:25

You can feed the endpoint in from your code - there are a couple of articles on dynamic endpoint set up.

However I would not bother if a user fiddles with a config file you need to shoot the user. It is easy (for you) to recover from the problem and it will identify an idiot in your organisation.

Never underestimate the power of human stupidity
RAH

^That's Aragon4-Dec-11 20:46

^That's Aragon

4-Dec-11 20:46

Thanks for the suggestion Mycroft.

Mycroft Holmes wrote:
However I would not bother if a user fiddles with a config file you need to shoot the user. It is easy (for you) to recover from the problem and it will identify an idiot in your organisation.

That is good point. Cool | :cool:

Actually I am implementing user activity tracking application, so if user is idle for X min it will call a web service and add idle entry in the database for that user. This details will be used in the reporting.

Now we are technical team, anyone can change this endpoint and stop the web service call. so I must have to take some security steps. Wink | ;)

I will try to follow dynamic binding from the code side.

Thanks for the help.

Regards

Mycroft Holmes4-Dec-11 21:17

4-Dec-11 21:17

Why not reverse the reporting process - n# Activities in x minutes then if they break the connection they get ragged on for not working. Or change the way you present it, if they pass a reasonable minimum threshold then they are rewarded instead of hassled.

Morale must be really crappy in your organisation if such a negative outlook is predominant.

Never underestimate the power of human stupidity
RAH

^That's Aragon4-Dec-11 23:32

^That's Aragon

4-Dec-11 23:32

Mycroft Holmes wrote:
Morale must be really crappy in your organisation if such a negative outlook is predominant.

Yes, you are absolutely right. Thumbs Up | :thumbsup:

This small application is only for monitoring employees idle status on his/her PC and not the working status. Frown | :(

Like someone talk on phone or may take small coffee break more than define criteria(i.e. X min), then system will add a entry in the database and notify use about it.

So to minimize small break(which is too usual Cool | :cool:

) , organization is approaching this application and it is too annoying for me. Sigh | :sigh:

Regards

Pete O'Hanlon5-Dec-11 0:49

Pete O'Hanlon

5-Dec-11 0:49

If I were you, and I was working in such a controlling environment, I would look for another job. No good can come from such an application.

Forgive your enemies - it messes with their heads

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Binding Question

Kevin Marois3-Dec-11 7:58

3-Dec-11 7:58

I have this data template:

<DataTemplate DataType="{x:Type models:PartModel}">
    <StackPanel Orientation="Horizontal">
        <Image Source="/Abtech.Spares.UI;component/Media/Graphics/motherboard_enabled_96x96.png"
					Height="16"
					Width="16"
                    Margin="0,0,3,0"/>
        <Button x:Name="cmdTribal"
                    Margin="2,0,2,0"
                    Command="{Binding ElementName=ThisView, Path=DataContext.SelectTribalCommand}">
            <Image Source="/Abtech.Spares.UI;component/Media/Graphics/abtech_triangle_blue_small.png"/>
        </Button>
        <TextBlock Text="{Binding PartNumber}"></TextBlock>
        <TextBlock Text="{Binding Tribal.TribalNumber}" 
                    Margin="3,0,0,3"
                    Foreground="Blue"/>
        <TextBlock Text="-"
                    Margin="3,0,3,0"/>
        <TextBlock Text="{Binding PartDescription}"></TextBlock>
    </StackPanel>
</DataTemplate>

The PartModel has a property called Tribal, which is an instance of another model called TribalMode. On the TribalModel class is a property called TribalNumber. I can see the Tribal number displayed just fine when the data is loaded.

In the code behind after the data is loaded, I'm updating the tribal numbers, but the change doesn't show in the UI.

What's wrong here?

Everything makes sense in someone's mind

Re: Binding Question

Kevin Marois3-Dec-11 8:03