Programmatically add claim to a list - sharepoint-2010

Question

I wrote a small piece of code which add a claim to a site in Sharepoint.
I proceed like that :
using (SPSite site = new SPSite(url))
{
using (SPWeb web = site.OpenWeb())
{
SPClaimProviderManager claimMgr = SPClaimProviderManager.Local;
if (claimMgr != null)
{
SPClaim claim = new SPClaim(type, claim_name, Microsoft.IdentityModel.Claims.ClaimValueTypes.String, SPOriginalIssuers.Format(SPOriginalIssuerType.ClaimProvider, provider));
string userName = claimMgr.EncodeClaim(claim);
SPUserInfo info = new SPUserInfo
{ LoginName = userName,
Name = name };
SPRoleAssignment roleAssignment = new SPRoleAssignment(info.LoginName, info.Email, info.Name, info.Notes);
roleAssignment.RoleDefinitionBindings.Add(web.RoleDefinitions["Read"]);
web.RoleAssignments.Add(roleAssignment);
web.Update();
}
}
}
Pretty easy but i would like to add the claim to a list that i created. By now, i'm using SPSite and SPWeb to access the site but i need to go deeper :) and i can't find the way to do ...
Thank you in advance!

Answer 1

Since both, SPWeb and SPList, inherit from SPSecurableObject all you have to do is load the SPList object for that list you want to alter the permissions.
A SPList can be loaded either by URL or by list title:
SPList listByTitle = web.Lists["Tasks"];
SPList listByUrl = web.GetList("/server/relative/Lists/Tasks");
In your example:
using (SPSite site = new SPSite(url))
{
using (SPWeb web = site.OpenWeb())
{
SPClaimProviderManager claimMgr = SPClaimProviderManager.Local;
if (claimMgr != null)
{
SPClaim claim = new SPClaim(type, claim_name, Microsoft.IdentityModel.Claims.ClaimValueTypes.String, SPOriginalIssuers.Format(SPOriginalIssuerType.ClaimProvider, provider));
string userName = claimMgr.EncodeClaim(claim);
SPUserInfo info = new SPUserInfo
{ LoginName = userName,
Name = name };
SPRoleAssignment roleAssignment = new SPRoleAssignment(info.LoginName, info.Email, info.Name, info.Notes);
roleAssignment.RoleDefinitionBindings.Add(web.RoleDefinitions["Read"]);
// web.RoleAssignments.Add(roleAssignment);
// web.Update();
SPList list = web.Lists["TheListTitle"];
list.RoleAssignments.Add(roleAssignment);
}
}
}
It is not required to update the web or list after the modification of the role assignments.