Comments by SteveBaldwin21

SteveBaldwin21 15-Sep-13 15:18pm View

The problem I see is the collection modified during enumeration when adding the new images.

SteveBaldwin21 18-Aug-13 18:27pm View

Haha. An Asynchronous operation then.:)

SteveBaldwin21 12-Aug-13 8:54am View

<pre lang="cs">for (int i = 0; i < PlantCount; i++)
{

_PlantCollection.Add(new PlantCollection()
{
Name = _ListOfPlantNames[i],
URLOfPlant = ListOfURLs()[i],
PlantThumbnail = new BitmapImage(new Uri(ListOfImageSources()[i])),
SafeToFeed = ListOfSafeText()[i],
PlantTrafficColour = ListOfTrafficColours()[i]
});
}</pre>

<pre>PlantListView.ItemsSource = _PlantCollection;</pre>

^^ My listview that displays the plants in the UI.

If the PlantCount is null/0/empty - no items are shown in the Listview. If no Listview items are shown this is an indication that the PlantCount has 0 as a value in the loop, because if I add a value instead of the PlantCount it works as intended.

Hope this makes sense?
Thank you.

SteveBaldwin21 12-Aug-13 8:46am View

This answer worked. Thank you very much David.

SteveBaldwin21 12-Aug-13 8:37am View

I see on my question I had wrote the return inside the loop, my apologies as this was not in my code. This happened when I was trying to adjust the formatting in the "<pre>" section. I will try the code below and thank you!.

SteveBaldwin21 12-Aug-13 8:36am View

sorry - I mean null rather than 0. No items appear in the listbox meaning that the loop is not iterating because the count is null.

Sorry again.

SteveBaldwin21 12-Aug-13 8:31am View

Yep, its called when the list's are assigned to one. Yes the xpath is correct as the values are all correct. It's just I need the count to iterate how many plants to add to the ListView without causing duplication.

SteveBaldwin21 12-Aug-13 8:25am View

I did and it passed a value of 0.

SteveBaldwin21 12-Aug-13 7:09am View

Ignore this. I made a copy of the list so that it would not directly affect it.

Thank you anyway!

SteveBaldwin21 12-Aug-13 6:43am View

Oh! Sorry, Thank you!

SteveBaldwin21 12-Aug-13 6:37am View

Thank you for the reply. I tried this but VS2010 did not recongize the Container.PlantCollection?

SteveBaldwin21 9-Aug-13 20:27pm View

Thank you for your reply. Very informative with the practical approach.

SteveBaldwin21 9-Aug-13 20:25pm View

I have had a few replies with great answers that will help me greatly. I have not stated that anyone is trying to claim a programming paradigm is superior to another, actually the opposite. I was not fully aware of the logical approach of the structured to object which I will begin to incorporate. Again naivety from a newbie showing :(.

Thank you.

SteveBaldwin21 9-Aug-13 20:11pm View

Brilliant answer and thank you. The last paragraph made perfect sense to my situation.

For example in my parser program. I have three classes following the SPR -

i. WebContentHandler - which principle is to 'handle' the WebRequest functions.
ii. Parser - which principle is to parse then assign the parsed data into generics.
iii. ParsedCollections - which contains the properties and methods of the generics that are passed to the UI/Databinding.

Still with this example and my structure, I find it is not very OOP at all... and the naming is not very 'real world' at all. Even still procedural would be so much simpler - even with tons more code. I just need to keep on reading and learning.

SteveBaldwin21 5-Aug-13 12:44pm View

Just seen this! Didn't realise it had a multiple overload.

Thank you!

SteveBaldwin21 5-Aug-13 8:27am View

Thank you, your suggestion did work in a single instance but when in a loop it returns incorrect values.

SteveBaldwin21 5-Aug-13 8:09am View

I have updated the question, thank you.

It works in a single instance however when in a Foreach loop, it returns values;

0
-1
-1
-1
-1
-1
0
0

SteveBaldwin21 1-Jul-13 18:39pm View

I have been reading most the afternoon on the DRY and SOLID concepts and will completely review my design.

I thank you very much for your advice and help + the kick up the ass to realise mistakes and learn correctly.

Thank you for your time Sergey.

SteveBaldwin21 1-Jul-13 16:10pm View

I would love to, but only if you have time to answer it would be greatly appreciated.

1. My concern with using the class constructor is that, if I increase the amount of parameters on the constructors say for an image, this is going to be quite a lengthy code for each weed purely in the constructor parameters, Seeing as there could 100+ weeds.

2. DRY problem; for each of the weeds, I have the properties passed to a textblock in the form, which results in a large number of repetitive code. What could I do to avoid this? Could a solution be;

For the list_box conditional statements override the properties with 1 instantiation..

Weed WeedItem = new Weed(...)

but then it is still repeating everything again...

Hope this made sense.

Thank you

SteveBaldwin21 1-Jul-13 15:43pm View

This made sense also, again thank you for taking the time to answer my question. I have become a bit stumped on how to approach this after this information.

SteveBaldwin21 1-Jul-13 15:22pm View

Perfect example and explanation, thank you.

SteveBaldwin21 1-Jul-13 14:57pm View

"#2: I would most certainly NOT use a method "Chicory" because it does not describe what it does and you would get a method for each new weed."

For what reason would methods be worse than the class constructors for each weed.

Weeds Chicory = new Weeds(...)
Weeds Dandelion = new Weeds(...)
etc..

Thank you

SteveBaldwin21 1-Jul-13 13:36pm View

Thank you for your reply Sergey, I understood some of your reply but found the last part quite confusing.

"Hard-coding as you demonstrated it is simply not acceptable."

If you have the time please could you point me or explain with an example of hard-coding and how I am using it also why it is unacceptable.

Again thank you for your time.

SteveBaldwin21 1-Jul-13 8:50am View

Thank you for the this reply, very informative.

"#4 Edible is Yes/No ? use a Boolean"
Edible - "Yes, Stems Only" or "Yes, Flowers Only" for example.

Thank you again.

SteveBaldwin21 1-Jul-13 7:56am View

Sorry might not of been so clear; Properties and Chicory() are within (Public Class Weed) and the Use examples are within the Windows Form.

Edible and Regularity will contain more information but for these examples I just kept "Yes" and "Moderate".

SteveBaldwin21 28-Jun-13 14:39pm View

Thank you! That worked perfectly.

SteveBaldwin21 27-Jun-13 16:17pm View

Thank you CHill60.

SteveBaldwin21 27-Jun-13 16:17pm View

Thank you for the bullet points very informative.

I had confused a constructor with a method and I caused myself much confusion; This really helped me understand Constructors though.

Thanks all for the replies.

SteveBaldwin21 27-Jun-13 15:06pm View

"Doing less is catastrophic, doing more is bad."

I would be very grateful if you could take the time and elaborate on this.

Thank you!

SteveBaldwin21 27-Jun-13 15:04pm View

Ah I see, this made sense.

I did misunderstand what the book said completely, or at least how I understood it was intended.

So just playing on example of the database write scenario; what would the negative effect of calling a constructor to write data.

Comments by SteveBaldwin21 (Top 30 by date)