ArrayLists question...

  • Thread starter Thread starter Bernardo
  • Start date Start date
B

Bernardo

Hi,

I want to store n structures(class) in a Array (I don't
know if it is a god method like this but...)

Anyone knows how can I access an element of the Array?
Array.item(Class).property..?

Here is the code I have
ArrayList ColModulos = new ArrayList();
declaracoes ClsDeclaracoes = new declaracoes();

for ( int i = 0; i<20; i++ )
{
ClsDeclaracoes.MSG_STR="TESTE" + i;
ColModulos.Add(ClsDeclaracoes);
}

Thanks,
BP
 
HI Bernardo,

The problem is cause ArrayList is a array of instances of object. not of
ClsDeclaracoes .

You can do two things:
1- Cast it back:
(( ClsDeclaracoes )ColModulos[index]).Property

2- Use an strong typed collection , this is what I recommend. If you don;t
how to do it just let me know and I will give you an implementation of it
where you only have to change the type.


Cheers,
 
Hi,

Thanks, Can you send me some examples of Typed collection
array.
Thanks a lot

-----Original Message-----
HI Bernardo,

The problem is cause ArrayList is a array of instances of object. not of
ClsDeclaracoes .

You can do two things:
1- Cast it back:
(( ClsDeclaracoes )ColModulos[index]).Property

2- Use an strong typed collection , this is what I recommend. If you don;t
how to do it just let me know and I will give you an implementation of it
where you only have to change the type.


Cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

Bernardo said:
Hi,

I want to store n structures(class) in a Array (I don't
know if it is a god method like this but...)

Anyone knows how can I access an element of the Array?
Array.item(Class).property..?

Here is the code I have
ArrayList ColModulos = new ArrayList();
declaracoes ClsDeclaracoes = new declaracoes();

for ( int i = 0; i<20; i++ )
{
ClsDeclaracoes.MSG_STR="TESTE" + i;
ColModulos.Add(ClsDeclaracoes);
}

Thanks,
BP
Click to expand...


.
Click to expand...
 
Hi.
I also use ArrayList to put datas from database,using
SQLdatareader, into dropdown list. I want to convert item
from that dropdownlist to integer.How to do that?
Thank you
 
Hi,

You can use:
int i = Convert.ToInt32( dropdownlistControl.SelectedValue);

Please be aware that this does not checks for possible errors.

Thank,
 
Hi,

Find below the code of a Strong typed collection, I already set the type to
ClSDeclaracoes.

Hope this help,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation


//******************************* CODE START
using System;

using System.Collections;

public class ClsDeclaracoesCollection:CollectionBase
{
public ClsDeclaracoes Insert( int index, ClsDeclaracoes newelem )
{
this.InnerList.Insert( index, newelem);
return newelem;
}
public ClsDeclaracoes Add( ClsDeclaracoes newelem)
{
this.InnerList.Add( newelem);
return newelem;
}

public ClsDeclaracoes this[int index]
{
get
{
return (ClsDeclaracoes) InnerList[index];
}
set
{
InnerList[index] = value;
}
}

//You may have to change this to refrect your correct ID name/type
public ClsDeclaracoes Find(int id)
{
foreach(ClsDeclaracoes current in InnerList)
if ( current.ID == id )
return current;
return null;
}

public void Remove( ClsDeclaracoes elem)
{
InnerList.Remove( elem);

}


public ClsDeclaracoesCollection(){}
private ClsDeclaracoesCollection( ArrayList newarray)
{
InnerList.Clear();
foreach( ClsDeclaracoes location in newarray)
{
Add( location);
}
}



public ClsDeclaracoesCollection Clone()
{
return new ClsDeclaracoesCollection( InnerList);
}


}
//******************************* CODE END



Hi,

Thanks, Can you send me some examples of Typed collection
array.
Thanks a lot

-----Original Message-----
HI Bernardo,

The problem is cause ArrayList is a array of instances of object. not of
ClsDeclaracoes .

You can do two things:
1- Cast it back:
(( ClsDeclaracoes )ColModulos[index]).Property

2- Use an strong typed collection , this is what I recommend. If you don;t
how to do it just let me know and I will give you an implementation of it
where you only have to change the type.


Cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

Bernardo said:
Hi,

I want to store n structures(class) in a Array (I don't
know if it is a god method like this but...)

Anyone knows how can I access an element of the Array?
Array.item(Class).property..?

Here is the code I have
ArrayList ColModulos = new ArrayList();
declaracoes ClsDeclaracoes = new declaracoes();

for ( int i = 0; i<20; i++ )
{
ClsDeclaracoes.MSG_STR="TESTE" + i;
ColModulos.Add(ClsDeclaracoes);
}

Thanks,
BP
Click to expand...


.
Click to expand...
Click to expand...
 
Back
Top