Add item at start

[shapper]

Hello,

I am creating a list of Role as follows:

IList<Roleroles = new List<Role>();
roles.Add(new Role { Type = RoleType.Administrator, Name =
"Administrador", Open = false });
...

After I add all roles I need to add a new role at the start of the
list.

Can I do this?

Thanks,
Miguel

[Jeff Johnson]

"shapper" <md*****@gmail.comwrote in message
news:73**********************************@w24g2000 prd.googlegroups.com...

After I add all roles I need to add a new role at the start of the
list.

Look at the Insert() method.

[Stanimir Stoyanov]

roles.Insert(0, new Role { ... });
--
Stanimir Stoyanov
http://stoyanoff.info

"shapper" <md*****@gmail.comwrote in message
news:73**********************************@w24g2000 prd.googlegroups.com...

Hello,

I am creating a list of Role as follows:

IList<Roleroles = new List<Role>();
roles.Add(new Role { Type = RoleType.Administrator, Name =
"Administrador", Open = false });
...

After I add all roles I need to add a new role at the start of the
list.

Can I do this?

Thanks,
Miguel

[shapper]

On Nov 5, 7:55*pm, "Jeff Johnson" <[e-mail]:

"shapper" <[e-mail] in message

news:73**********************************@w24g2000 prd.googlegroups.com...

After I add all roles I need to add a new role at the start of the
list.

Look at the Insert() method.

Yes, I have tried it as follows:

MyRoles = Role.List(null, true).Insert(0, new Role { Name =
"Administrator", Open = true, Type = null });

Role.List returns an IList<Role>

But I get the following error:
Cannot implicitly convert type 'void' to
'System.Collections.Generic.IList<MyApp.Role>'

Any idea why this is happening?

Thanks,
Miguel

[Stanimir Stoyanov]

The correct lines of code are

MyRoles = Role.List(null, true);
MyRoles.Insert(0, new Role { Name = "Administrator", Open = true, Type =
null });

You were trying to assign the result of the Insert method (or the lack
thereof) to MyRoles. Instead, you should assign the result of your
Role.List() method to your List reference and then just call Insert() on the
new instance.
--
Stanimir Stoyanov
http://stoyanoff.info

"shapper" <md*****@gmail.comwrote in message
news:44**********************************@v22g2000 pro.googlegroups.com...
On Nov 5, 7:55 pm, "Jeff Johnson" <[e-mail]:

"shapper" <[e-mail] in message

news:73**********************************@w24g2000 prd.googlegroups.com...

After I add all roles I need to add a new role at the start of the
list.

Look at the Insert() method.

Yes, I have tried it as follows:

MyRoles = Role.List(null, true).Insert(0, new Role { Name =
"Administrator", Open = true, Type = null });

Role.List returns an IList<Role>

But I get the following error:
Cannot implicitly convert type 'void' to
'System.Collections.Generic.IList<MyApp.Role>'

Any idea why this is happening?

Thanks,
Miguel

[shapper]

On Nov 5, 8:54*pm, "Stanimir Stoyanov" <[e-mail]>
wrote:

The correct lines of code are

MyRoles = Role.List(null, true);
MyRoles.Insert(0, new Role { Name = "Administrator", Open = true, Type =
null });

You were trying to assign the result of the Insert method (or the lack
thereof) to MyRoles. Instead, you should assign the result of your
Role.List() method to your List reference and then just call Insert() on the
new instance.
--
Stanimir Stoyanovhttp://stoyanoff.info

"shapper" <[e-mail] in message

news:44**********************************@v22g2000 pro.googlegroups.com...
On Nov 5, 7:55 pm, "Jeff Johnson" <[e-mail]:

"shapper" <[e-mail] in message

news:73**********************************@w24g2000 prd.googlegroups.com....

After I add all roles I need to add a new role at the start of the
list.

Look at the Insert() method.

Yes, I have tried it as follows:

MyRoles = Role.List(null, true).Insert(0, new Role { Name =
"Administrator", Open = true, Type = null });

Role.List returns an IList<Role>

But I get the following error:
Cannot implicitly convert type 'void' to
'System.Collections.Generic.IList<MyApp.Role>'

Any idea why this is happening?

Thanks,
Miguel

Yes, I know ... but I was trying to do this in one code line ...
that's why I was trying this

[Peter Duniho]

On Wed, 05 Nov 2008 12:43:11 -0800, shapper <md*****@gmail.comwrote:

[...]
MyRoles = Role.List(null, true).Insert(0, new Role { Name =
"Administrator", Open = true, Type = null });

Role.List returns an IList<Role>

But I get the following error:
Cannot implicitly convert type 'void' to
'System.Collections.Generic.IList<MyApp.Role>'

Any idea why this is happening?

Stanimir already explained the error. Personally, I think your goal of
doing it all in one line is at least a bit of an "over-reach", and may in
fact be contrary to nice, readable code. But, if you insist, you could do
this:

(MyRoles = Role.List(null, true)).Insert(0, new Role { Name =
"Administrator", Open = true, Type = null });

But honestly, I'd prefer the code Stanimir posted over the above. Just
because you _can_ obfuscate the code doesn't mean you should. :)

Pete