Parse Array

[shapper]

Hello,

I have the following class ( Level is just a simple enumeration ):

public class Theme {
public Subject Subject { get; set; }
public List<LevelLevel s { get; set; }
public string Note { get; set; }
}

And MyThemes is a List<Theme>

I am filling "public string[] Themes" from a form and getting:

Themes[0] = Economy|Base,Su perior|Note 1
Themes[1] = Math|Base|Note 2

Now I need to fill MyThemes with these values:

for (int i = 0; i < this.Themes.Len gth; i++) {

this.Themes = this.Themes[i].Split(new char[] { '|' },
StringSplitOpti ons.RemoveEmpty Entries).Select (t =new Theme { Subject
= ???, Levels = ???, Note = ??? }).ToList();

}

I am a little bit confused about this.

For each Theme, Theme[i] I split it using "|" and then:
- First value is Subject
- Second value are the Levels in a CSV format (needs to be converted
to a list)
- Third value is the note

Can't I integrate Linq and Split to get this instead of using more
loops?

Thanks,
Miguel

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

Re: Parse Array

shapper wrote:

Hello,
>
I have the following class ( Level is just a simple enumeration ):
>
public class Theme {
public Subject Subject { get; set; }
public List<LevelLevel s { get; set; }
public string Note { get; set; }
}
>
And MyThemes is a List<Theme>
>
I am filling "public string[] Themes" from a form and getting:
>
Themes[0] = Economy|Base,Su perior|Note 1
Themes[1] = Math|Base|Note 2
>
Now I need to fill MyThemes with these values:
>
for (int i = 0; i < this.Themes.Len gth; i++) {
>
this.Themes = this.Themes[i].Split(new char[] { '|' },
StringSplitOpti ons.RemoveEmpty Entries).Select (t =new Theme { Subject
= ???, Levels = ???, Note = ??? }).ToList();
>
}
>
I am a little bit confused about this.
>
For each Theme, Theme[i] I split it using "|" and then:
- First value is Subject
- Second value are the Levels in a CSV format (needs to be converted
to a list)
- Third value is the note
>
Can't I integrate Linq and Split to get this instead of using more
loops?
>
Thanks,
Miguel
>

You can't put a list of Theme objects in a string array. Besides, you
are making a list containing a single object for every iteration of the
list, so you would overwrite the previous item each time.

Make a constructor for the Theme class that takes a string, then you can
use LINQ to create a list of objects from the string array.

Something like:

public class Theme {
public Subject Subject { get; private set; }
public List<LevelLevel s { get; private set; }
public string Note { get; private set; }

public Theme(string data) {
string[] items = data.Split('|') ;
Subject = Enum.Parse(type of(Subject), items[0]);
Levels = new List<Level>();
foreach (string s in items[1].Split(',')) {
Levels.Add(Enum .Parse(typeof(L evel), s));
}
Note = items[2];
}

}

List<Theme= this.Themes.Sel ect(t =new Theme(t)).ToLis t();

--
Göran Andersson
_____

http://www.guffa.com

[shapper]

Re: Parse Array

On Oct 30, 2:30 pm, Göran Andersson <gu...@guffa.co mwrote:

shapper wrote:

Hello,

>

I have the following class ( Level is just a simple enumeration ):

>

  public class Theme {
    public Subject Subject { get; set; }
    public List<LevelLevel s { get; set; }
    public string Note { get; set; }
  }

>

And MyThemes is a List<Theme>

>

I am filling "public string[] Themes" from a form and getting:

>

Themes[0] = Economy|Base,Su perior|Note 1
Themes[1] = Math|Base|Note 2

>

Now I need to fill MyThemes with these values:

>

   for (int i = 0; i < this.Themes.Len gth; i++) {

>

   this.Themes = this.Themes[i].Split(new char[] { '|' },
StringSplitOpti ons.RemoveEmpty Entries).Select (t =new Theme { Subject
= ???, Levels = ???, Note = ??? }).ToList();

>

   }

>

I am a little bit confused about this.

>

For each Theme, Theme[i] I split it using "|" and then:
- First value is Subject
- Second value are the Levels in a CSV format (needs to be converted
to a list)
- Third value is the note

>

Can't I integrate Linq and Split to get this instead of using more
loops?

>

Thanks,
Miguel

>
You can't put a list of Theme objects in a string array. Besides, you
are making a list containing a single object for every iteration of the
list, so you would overwrite the previous item each time.
>
Make a constructor for the Theme class that takes a string, then you can
use LINQ to create a list of objects from the string array.
>
Something like:
>
public class Theme {
    public Subject Subject { get; private set; }
    public List<LevelLevel s { get; private set; }
    public string Note { get; private set; }
>
    public Theme(string data) {
       string[] items = data.Split('|') ;
       Subject = Enum.Parse(type of(Subject), items[0]);
       Levels = new List<Level>();
       foreach (string s in items[1].Split(',')) {
          Levels.Add(Enum .Parse(typeof(L evel), s));
       }
       Note = items[2];
    }
>
}
>
List<Theme= this.Themes.Sel ect(t =new Theme(t)).ToLis t();
>
--
Göran Andersson
_____http://www.guffa.com

Thanks! It worked fine ... just needed some casting:
Subject = (Subject)Enum.P arse(typeof(Sub ject), items[0]);
and
Levels.Add((Lev el)Enum.Parse(t ypeof(Level), s));