如何授予SPItem的SPGroup权限?

问题描述

我试图找到一个简单的示例，该示例如何为列表项Z提供特定的Sharepoint组X(权限级别Y)-但找不到示例代码.

I tried to find a simple example how to give a certain Sharepoint group X, a permission level Y, for list item Z - but can't find example code.

为该项目分配特定的用户权限(本例中为阅读器")时，我能想到的最短代码如下:

The shortest code I could come up with for assigning a specific user permissions ("Reader" in this case) for the item is the following:

SPRoleDefinition spRole = spWeb.RoleDefinitions["Reader"];
SPRoleAssignment roleAssignment= new SPRoleAssignment("//myDomain/myUser",
                                                      "[email protected]",
                                                      "Name", "Notes");
roleAssignment.RoleDefinitionBindings.Add(spRole);

SPListItem listItem = spWeb.GetListItem("http://<URL to item somewhere on the Site>");
listItem.BreakRoleInheritance(true);
listItem.RoleAssegnments.Add(roleAssignment);
listItem.Update();

我知道SPRoleAssignment.Add也可以使用SPPrincipal，而SPPrincipal反过来是一个小组-我只是不知道该怎么写.

I know that SPRoleAssignment.Add can also take an SPPrincipal which in turn is a group - I just don't know how do write it.

请给我一些示例代码，以了解如何向我的项目中添加具有读者"权限级别的现有Sharepoint组(例如"MyGroup").

Please give me some example code for how to add an existing Sharepoint group (e.g. "MyGroup") with the "Reader" permission level to my item.

推荐答案

实际上，这很容易-代替SPRoleAssignment("user","name"...)，我可以在角色分配中添加SPGroup，这样就可以了！完整代码如下:

Actually it was rather easy - instead of the SPRoleAssignment("user","name"...) I could just add an SPGroup to the role assignment and it worked! Full code following:

//note: using SiteGroups is "safer",
//because also groups which don't yet have any permissions are included
SPGroup spGroup = spWeb.SiteGroups["MyGroup"];
SPRoleDefinition spRole = spWeb.RoleDefinitions["Read"];

SPRoleAssignment roleAssignment= new SPRoleAssignment(spGroup);
roleAssignment.RoleDefinitionBindings.Add(spRole);

SPListItem listItem = spWeb.GetListItem("http://<URL to item somewhere on the Site>");
listItem.BreakRoleInheritance(true);
listItem.RoleAssignments.Add(roleAssignment);
listItem.Update();

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