Create a New SharePoint Permission Level and Bind it to an Existing SharePoint Group

Create a New SharePoint Permission Level and Bind it to an Existing SharePoint Group

这个例子是新建一个  permission level,名字为Example_xxxxxxxxxxx.建好之后.绑定这个permission level 到一个已经存在的组名字为Foo.

using (SPSite site = new SPSite( "http://moss/sites/PermExample" ))
{
using (SPWeb rootWeb = site.RootWeb)
{
string permissionLevelName = "Example_"+System.DateTime.Now.Ticks.ToString();

// Create a new Permission Level
SPRoleDefinition newPermissionLevel = new SPRoleDefinition();
newPermissionLevel.Name = permissionLevelName;
newPermissionLevel.Description = "Example Permission Level";
newPermissionLevel.BasePermissions =
SPBasePermissions.AddListItems |
SPBasePermissions.BrowseDirectories |
SPBasePermissions.EditListItems |
SPBasePermissions.DeleteListItems |
SPBasePermissions.AddDelPrivateWebParts;

// Add the permission level to web
rootWeb.RoleDefinitions.Add(newPermissionLevel);

// Bind to the permission level we just added
newPermissionLevel = rootWeb.RoleDefinitions[permissionLevelName];

// Create a new role Assignment using the SharePoint Group "Foo"
SPRoleAssignment roleAssignment = new SPRoleAssignment( (SPPrincipal)rootWeb.SiteGroups[ "Foo" ] );

// Add the Permission Level to the Foo SharePoint Group
roleAssignment.RoleDefinitionBindings.Add(newPermissionLevel);

// Add the new Role Assignment to the web
rootWeb.RoleAssignments.Add(roleAssignment);

rootWeb.Close();
}
site.Close();
}

这样就新建成功了.也绑定到了已经存在的组.!

另一种是不写代码直接在网站上添加的方法

Create a permission level

If there is no permission level similar to the one you need, you can create one and include just the permissions that you need.

1:On the Site Settings page, under Users and Permissions, click Advanced permissions.

2:On the toolbar, click Settings, and then click Permission Levels.

3:On the toolbar, click Add a Permission Level.

4:On the Add a Permission Level page, in the Name box, type a name for the new permission level..

5:In the Description box, type a description for the new permission level..

6:In the list of permissions, select the check boxes to add permissions to the permission level

7:Click Create.

http://office.microsoft.com/en-us/windows-sharepoint-services-help/permission-levels-and-permissions-HA010100149.aspx

The following tables list and describe the permission levels that you can assign to users and SharePoint groups and the permissions you can assign to permission levels. For each permission, the permission level that it is associated with it, by default,
is listed. For each permission, any permissions dependent on it are listed, as well as any default permission levels that include the permission.

Default permission levels in Windows SharePoint Services 3.0

Permission Level	Description
Full Control	This permission level contains all permissions. Assigned to the Site name Owners SharePoint group, by default. This permission level cannot be customized or deleted.
Design	Can create lists and document libraries, edit pages and apply themes, borders, and style sheets in the Web site. Not assigned to any SharePoint group, by default.
Contribute	Can add, edit, and delete items in existing lists and document libraries. Assigned to the Site name Members SharePoint group, by default.
Read	Read-only access to the Web site. Users and SharePoint groups with this permission level can view items and pages, open items, and documents. Assigned to the Site name Visitors SharePoint group, by default.
Limited Access	The Limited Access permission level is designed to be combined with fine-grained permissions to give users access to a specific list, document library, item, or document, without giving them access to the entire site. However, to access a list or library, for example, a user must have permission to open the parent Web site and read shared data such as the theme and navigation bars of the Web site. The Limited Access permission level cannot be customized or deleted. Note You cannot assign this permission level to users or SharePoint groups. Instead, Windows SharePoint Services 3.0 automatically assigns this permission level to users and SharePoint groups when you grant them access to an object on your site that requires that they have access to a higher level object on which they do not have permissions. For example, if you grant users access to an item in a list and they do not have access to the list itself, Windows SharePoint Services 3.0 automatically grants them Limited Access on the list, and also the site, if needed.

List, site, and personal permissions

Windows SharePoint Services 3.0 includes 33 permissions, which are used in the five default permission levels. You can change which permissions are included in a particular permission level (except for the Limited Access and Full Control permission levels)
or create a new permission level to contain a specific set of permissions that you specify.

Permissions are categorized as list permissions, site permissions, and personal permissions, depending upon the objects to which they can be applied. For example, site permissions apply to a particular site, list permissions apply only to lists and libraries,
and personal permissions apply only to things like personal views, private Web Parts, etc. The following tables show permissions and the permission levels they are assigned to, by default.

List Permissions

Permission	Full Control	Design	Contribute	Read	Limited Access
Manage Lists	X	X
Override Check-Out	X	X
Add Items	X	X	X
Edit Items	X	X	X
Delete Items	X	X	X
View Items	X	X	X	X
Approve Items	X	X
Open Items	X	X	X	X
View Versions	X	X	X	X
Delete Versions	X	X	X
Create Alerts	X	X	X	X
View Application Pages	X	X	X	X	X

Site Permissions

Permission	Full Control	Design	Contribute	Read	Limited Access
Manage Permissions	X
View Usage Data	X
Create Subsites	X
Manage Web Site	X
Add and Customize Pages	X	X
Apply Themes and Borders	X	X
Apply Style Sheets	X	X
Create Groups	X
Browse Directories	X	X	X
Use Self-Service Site Creation	X	X	X	X
View Pages	X	X	X	X
Enumerate Permissions	X
Browse User Information	X	X	X	X	X
Manage Alerts	X
Use Remote Interfaces	X	X	X	X	X
Use Client Integration Features	X	X	X	X	X
Open	X	X	X	X	X
Edit Personal User Information	X	X	X

Personal Permissions

Permission	Full Control	Design	Contribute	Read	Limited Access
Manage Personal Views	X	X	X
Add/Remove Private Web Parts	X	X	X
Update Personal Web Parts	X	X	X

Dependencies and descriptions

Many permissions are dependent on other permissions. When you select a permission that is dependent on another, the permission on which it is dependent is also automatically selected. Likewise, clearing a permission on which other permissions are dependent
also clears the dependent permissions. The following tables describe what each permission is used for and lists dependent permissions, if applicable.

List permissions

Permission	Description	Dependent permissions
Manage Lists	Create and delete lists, add or remove columns in a list, and add or remove public views of a list.	View Items, View Pages, Open, Manage Personal Views
Override Check-Out	Discard or check in a document which is checked out to another user.	View Items, View Pages, Open
Add Items	Add items to lists, add documents to document libraries, and add Web discussion comments.	View Items, View Pages, Open
Edit Items	Edit items in lists, edit documents in document libraries, edit Web discussion comments in documents, and customize Web Part Pages in document libraries.	View Items, View Pages, Open
Delete Items	Delete items from a list, documents from a document library, and Web discussion comments in documents.	View Items, View Pages, Open
View Items	View items in lists, documents in document libraries, and Web discussion comments.	View Pages, Open
Approve Items	Approve a minor version of a list item or document.	Edit Items, View Items, View Pages, Open
Open Items	View the source of documents with server-side file handlers.	View Items, View Pages, Open
View Versions	View past versions of a list item or document.	View Items, View Pages, Open
Delete Versions	Delete past versions of a list item or document.	View Items, View Versions, View Pages, Open
Create Alerts	Create e-mail alerts.	View Items, View Pages, Open
View Application Pages	View documents and views in a list or document library.	Open

Site permissions

Permission	Description	Dependent permissions
Manage Permissions	Create and change permission levels on the Web site and assign permissions to users and groups.	Approve Items, Enumerate Permissions, Open
View Usage Data	View reports on Web site usage.	Approve Items, Open
Create Subsites	Create subsites such as team sites, Meeting Workspace sites, and Document Workspace sites.	View Pages, Open
Manage Web Site	Perform all administration tasks for the Web site as well as manage content.	View Pages, Open
Add and Customize Pages	Add, change, or delete HTML pages or Web Part pages, and edit the Web site using a Windows SharePoint Services-compatible editor.	View Items, Browse Directories, View Pages, Open
Apply Themes and Borders	Apply a theme or borders to the entire Web site.	View Pages, Open
Apply Style Sheets	Apply a style sheet (.css file) to the Web site.	View Pages, Open
Create Groups	Create a group of users that can be used anywhere within the site collection.	View Pages, Open
Browse Directories	Enumerate files and folders in a Web site using an interface such as SharePoint Designer or Web-based Distributed Authoring and Versioning (Web DAV).	View Pages, Open
Use Self-Service Site Creation	Create a Web site using Self-Service Site Creation.	View Pages, Open
View Pages	View pages in a Web site.	Open
Enumerate Permissions	Enumerate permissions on the Web site, list, folder, document, or list item.	View Items, Open Items, View Versions, Browse Directories, View Pages, Open
Browse User Information	View information about users of the Web site.	Open
Manage Alerts	Manage alerts for all users of the Web site	View Items, Create Alerts, View Pages, Open
Use Remote Interfaces	Use Simple Object Access Protocol (SOAP), Web DAV, or SharePoint Designer interfaces to access the Web site.	Open
Open	Open a Web site, list, or folder to access items inside that container.	No dependent permissions
Edit Personal User Information	Allow a user to change his or her own user information, such as adding a picture.	Browse User Information, Open

Personal permissions

Permission	Description	Dependent permissions
Manage Personal Views	Create, change, and delete personal views of lists.	View Items, View Pages, Open
Add/Remove Private Web Parts	Add or remove private Web Parts on a Web Part Page.	View Items, View Pages, Open, Update Personal Web Parts
Update Personal Web Parts	Update Web Parts to display personalized information.	View Items, View Pages, Open