saving collections in Settings.Settings

[Irfan]

hi,

I wanted to save a simple collection in Settings.Settings but i am not able
to retrieve it.

Although no errors while saving it but no value are retrieved either.
Do i have to do something different.Am i missing something?

This is what i do;
SortedList x = new SortedList();
x.Add(1, 1);
x.Add(2, 2);
x.Add(3, 3);
Properties.Settings.Default.lst = x;
Properties.Settings.Default.Save();

Regards,
Irfan

 

[Kevin Spencer]

Does the class member already exist in your Settings file? Remember that is
is a class. The member must already exist.

--
HTH,

Kevin Spencer
Microsoft MVP
Bit Player
http://unclechutney.blogspot.com

Expect the unaccepted.

 

[Irfan]

thanks Kevin, The collection is a collection of integers only. There are no
classes as such.

This is a simple example

SortedList x = new SortedList();
x.Add(1, 1);
x.Add(2, 2);
x.Add(3, 3);
Properties.Settings.Default.lst = x;
Properties.Settings.Default.Save();

 

[Kevin Spencer]

Of course there is a class. It is an instance of
System.Collections.SortedList. You need to create a member of the Settings
class that is a SortedList.

When you refer to

Properties.Settings.Default.lst

You are referring to a member of a class (Properties.Settings.Default). The
member must exist in order to assign a value to it.

Application Settings must be serializable in order to be stored in the
application configuration file. I don't believe that
System.Collections.SortedList is serializable straight out of the box, but
it might be. Take a look at the following article about Application Settings
Architecture for help. It is possible to serialize *anything* as text, if
you implement your own serializer:

http://msdn2.microsoft.com/en-us/library/8eyb2ct1.aspx
--
HTH,

Kevin Spencer
Microsoft MVP
Bit Player
http://unclechutney.blogspot.com

Expect the unaccepted.

 

[Irfan]

Kevin
Many thanks for your replies,

irfan

Of course there is a class. It is an instance of
System.Collections.SortedList. You need to create a member of the Settings
class that is a SortedList.

When you refer to

Properties.Settings.Default.lst

You are referring to a member of a class (Properties.Settings.Default).
The member must exist in order to assign a value to it.

Application Settings must be serializable in order to be stored in the
application configuration file. I don't believe that
System.Collections.SortedList is serializable straight out of the box, but
it might be. Take a look at the following article about Application
Settings Architecture for help. It is possible to serialize *anything* as
text, if you implement your own serializer:

http://msdn2.microsoft.com/en-us/library/8eyb2ct1.aspx
--
HTH,

Kevin Spencer
Microsoft MVP
Bit Player
http://unclechutney.blogspot.com

Expect the unaccepted.