检查 Webmatrix 中的角色

Question

我在 pages_UsersInRoles 中添加了两个用户和两个角色。我正在尝试检查登录到应用程序的用户的角色。

这是我的代码：

var UserId = WebSecurity.GetUserId(HttpContext.Current.User.Identity.Name);
var User = WebSecurity.CurrentUserName;
var db = Database.Open("ApplicationServices");
var stQueryString = "SELECT * FROM Table1 WHERE (UserId) = (UserId) ORDER BY SubmitDate DESC";
var data = db.Query(stQueryString, UserId);  
var grid = new WebGrid(data, rowsPerPage:20);

var AdminQueryString = "SELECT * FROM Table1 ORDER BY SubmitDate DESC";
var AdminData = db.Query(AdminQueryString);
var AdminGrid = new WebGrid(AdminData, rowsPerPage:20);

 <div id="Divgrid">
     @if (Roles.IsUserInRole(UserId, "admin") && (AdminData.Any())){
              @AdminGrid.GetHtml(
              tableStyle: "grid",
              headerStyle: "grid-header",
              footerStyle: "grid-footer",
              alternatingRowStyle: "grid-alternating-row",
              selectedRowStyle: "grid-selected-row",
              rowStyle: "grid-row-style",
              columns: AdminGrid.Columns(
                   AdminGrid.Column(header:"", format:@<a href="View/@item.Id">View</a>),
                   AdminGrid.Column(header:"", format:@<a href="Treatment/@item.Id">Treatment</a>),
                   AdminGrid.Column("Name", format:@<text>@item.ClientName</text>),
                   AdminGrid.Column("Date", format:@<text>@item.SubmitDate</text>))) }
        else if (Roles.IsUserInRole(UserId, "user") && (data.Any())) {
                 @grid.GetHtml(
                 tableStyle: "grid",
                 headerStyle: "grid-header",
                 footerStyle: "grid-footer",
                 alternatingRowStyle: "grid-alternating-row",
                 selectedRowStyle: "grid-selected-row",
                 rowStyle: "grid-row-style",
                 columns: grid.Columns(
                      grid.Column(header:"", format:@<a href="View/@item.Id">View</a>),
                      grid.Column(header:"", format:@<a href="Treatment/@item.Id">Treatment</a>),
                      grid.Column("Name", format:@<text>@item.ClientName</text>),
                      grid.Column("Date", format:@<text>@item.SubmitDate</text>))) }                    

   </div>

这是我得到的错误：

CS1502：“System.Web.Security.Roles.IsUserInRole(string, string)”的最佳重载方法匹配有一些无效参数

Answer 1

IsUserInRole 有两个参数，第一个是用户名，而不是用户 ID。您可以使用 WebSecurity.CurrentUserName 代替您拥有 UserID 的位置。

一个问题是查询需要更改以允许将用户名作为参数传递：

var stQueryString = "SELECT * FROM Table1 WHERE UserId = @0 ORDER BY SubmitDate DESC";

@0 表示接受 Query 中传递的参数。