如何在SPSecurityTrimmedControl修剪內容時顯示其他內容

Question

使用SPSecurityTrimmedControl隱藏/顯示內容很簡單。有沒有辦法顯示其他內容，當SPSecurityTrimmedControl的條件是而不是遇到？我的品牌網站應根據用戶角色交換內容。 重寫行爲並沒有這樣做，因爲ShouldRender方法是內部的並且控制着Render方法的行爲。

Answer 1

我想出了一些我自己。

示例用法：

<uc:TemplatedSecurityTrimmedControl runat="server" Permissions="ManageLists"> 
    <Authorised> 
    authorised content goes here 
    </Authorised> 
    <Unauthorised> 
     unauthorised content goes here 
    </Unauthorised> 
</uc:TemplatedSecurityTrimmedControl> 

代碼：

/// <summary> 
/// Templated version of the SPSecurityTrimmedControl 
/// </summary> 
[Bindable(false), ParseChildren(true), PersistChildren(false), 
SharePointPermission(SecurityAction.LinkDemand, ObjectModel = true), 
AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal), 
SharePointPermission(SecurityAction.InheritanceDemand, ObjectModel = true), 
AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)] 
public class TemplatedSecurityTrimmedControl : SPSecurityTrimmedControl, INamingContainer 
{ 
    #region Fields (1)  

    private bool _visible = true; 

    #endregion Fields  

    #region Properties (3)  

    /// <summary> 
    /// Content container for authorised users 
    /// </summary> 
    [Browsable(false), 
    DefaultValue(null), 
    PersistenceMode(PersistenceMode.InnerProperty), 
    TemplateContainer(typeof(TemplatedSecurityTrimmedControl))] 
    public ITemplate Authorised { get; set; } 

    /// <summary> 
    /// Content container when user is unauthorised 
    /// </summary> 
    [Browsable(false), 
    DefaultValue(null), 
    PersistenceMode(PersistenceMode.InnerProperty), 
    TemplateContainer(typeof(TemplatedSecurityTrimmedControl))] 
    public ITemplate Unauthorised { get; set; } 

    /// <summary> 
    /// Visible state 
    /// </summary> 
    /// <remarks> 
    /// base.Visible uses the ShouldRender() state. 
    /// If ShouldRender() returns false then Visible returns false. 
    /// Though I do want the unauthorised template to be visible. 
    /// </remarks> 
    public override bool Visible 
    { 
     [SharePointPermission(SecurityAction.Demand, ObjectModel = true)] 
     get 
     { 
      return _visible; 
     } 
     [SharePointPermission(SecurityAction.Demand, ObjectModel = true)] 
     set 
     { 
      _visible = value; 
     } 
    } 

    #endregion Properties  

    #region Methods (5)  

    // Public Methods (2)  

    /// <summary> 
    /// Control doesn't have a begin tag 
    /// </summary> 
    /// <param name="writer"></param> 
    public override void RenderBeginTag(HtmlTextWriter writer) 
    { 
     return; 
    } 

    /// <summary> 
    /// Control doesn't have an end tag 
    /// </summary> 
    /// <param name="writer"></param> 
    public override void RenderEndTag(HtmlTextWriter writer) 
    { 
     return; 
    } 
    // Protected Methods (3)  

    /// <summary> 
    /// Create child controls 
    /// </summary> 
    protected override void CreateChildControls() 
    { 
     Controls.Clear(); 

     // Decide which template to render 
     ITemplate template = ShouldRender() ? Authorised : Unauthorised; 

     // Add template to child controls 
     if (template != null) 
     { 
      Control container = new Control(); 
      template.InstantiateIn(container); 
      Controls.Add(container); 
     } 

     base.CreateChildControls(); 
    } 

    /// <summary> 
    /// Render control 
    /// </summary> 
    /// <param name="writer"></param> 
    [SharePointPermission(SecurityAction.Demand, ObjectModel = true)] 
    protected override void Render(HtmlTextWriter writer) 
    { 
     EnsureChildControls(); 

     // Suppress SPSecurityTrimmedControl.Render behavior by calling inner render operations directly 
     this.RenderBeginTag(writer); 
     this.RenderContents(writer); 
     this.RenderEndTag(writer); 
    } 

    /// <summary> 
    /// Decides if authorised content should be rendered 
    /// </summary> 
    /// <remarks> 
    /// base.ShouldRender is internal which makes it inaccessible. ty ILSpy. 
    /// </remarks> 
    protected virtual bool ShouldRender() 
    { 

     return 
      RightsSensitiveVisibilityHelper.UserHasRights(this.PermissionContext, this.Permissions, this.PermissionMode, this.RenderContext, null, null) 
      && (this.PageModes == PageModes.All || (PageModes.Normal & this.PageModes) != (PageModes)0) 
      && (this.AuthenticationRestrictions == AuthenticationRestrictions.AllUsers 
       || ((HttpContext.Current.Request.IsAuthenticated ? AuthenticationRestrictions.AuthenticatedUsersOnly : AuthenticationRestrictions.AnonymousUsersOnly) & this.AuthenticationRestrictions) != (AuthenticationRestrictions)0); 
    } 

    #endregion Methods  
} 

它添加到您safecontrols，你準備好去。