属性 校验

给属性添加校验，可以避免用户填写不支持的数据，减少开发不必要的错误处理逻辑。

1.属性必填

1. 1. 通过标注RequiredAttitude支持属性必填。

      using GrapeCity.Forguncy.Commands;
      using GrapeCity.Forguncy.Plugin;
      using System.ComponentModel;
      using System.ComponentModel.DataAnnotations;
      using System.Threading.Tasks;
      
      namespace MyPlugin
      {
          [Icon("pack://application:,,,/MyPlugin;component/Resources/Icon.png")]
          [Designer("MyPlugin.Designer.MyPluginServerCommandDesigner, MyPlugin")]
          public class MyPluginServerCommand : Command, ICommandExecutableInServerSideAsync
          {
              [Required]
              public string Name { get; set; }
      
              public async Task<ExecuteResult> ExecuteAsync(IServerCommandExecuteContext dataContext)
              {
                  return new ExecuteResult();
              }
              public override CommandScope GetCommandScope()
              {
                  return CommandScope.ExecutableInServer;
              }
          }
      }

      
      

   2. 效果：
      

2.校验长度

1. 1. 通过MaxLengthAttribute和MinLengthAttribute支持长度校验。

      using GrapeCity.Forguncy.Commands;
      using GrapeCity.Forguncy.Plugin;
      using System.ComponentModel;
      using System.ComponentModel.DataAnnotations;
      using System.Threading.Tasks;
      
      namespace MyPlugin
      {
          [Icon("pack://application:,,,/MyPlugin;component/Resources/Icon.png")]
          [Designer("MyPlugin.Designer.MyPluginServerCommandDesigner, MyPlugin")]
          public class MyPluginServerCommand : Command, ICommandExecutableInServerSideAsync
          {
              [MaxLength(6)]
              [MinLength(1)]
              public string Name { get; set; }
      
              public async Task<ExecuteResult> ExecuteAsync(IServerCommandExecuteContext dataContext)
              {
                  return new ExecuteResult();
              }
              public override CommandScope GetCommandScope()
              {
                  return CommandScope.ExecutableInServer;
              }
          }
      }

      
      

   2. 效果：