ef core 创建自引用灰了了 public class Menu:IEntity { public int Id { get; set; } public string text { get; set; } public bool group { get; set; } public bool shortout_root { get; set; } public string link { get; set; } public string icon { get; set; } public
public static class AlertExtension { public static void ShowAlert(this Activity activity ,string msg,string title = "", string btnText = "OK"){ AlertDialog.Builder builder = new AlertDialog.Builder(activity); builder.SetTitle(title); b
HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: java.lang.