如果有人可以帮助我进行VB编码，当我点击保存按钮时显示必填字段是必需的，并且保存的功能在所有必填字段填写之前不应该工作 （请视觉基本代码而不是其他）
答案 0 :(得分：0)
您可以使用按下按钮时发生的简单If函数。
2016-05-29 14:48:24.489 DEBUG 5533 --- [io-7777-exec-10] o.s.s.w.a.ExceptionTranslationFilter : Chain processed normally
2016-05-29 14:48:24.489 DEBUG 5533 --- [io-7777-exec-10] w.c.HttpSessionSecurityContextRepository : SecurityContext 'org.springframework.security.core.context.SecurityContextImpl@42259e42: Authentication: org.springframework.security.authentication.UsernamePasswordAuthenticationToken@42259e42: Principal: org.springframework.security.core.userdetails.User@40fecce: Username: SomeUser; Password: [PROTECTED]; Enabled: true; AccountNonExpired: true; credentialsNonExpired: true; AccountNonLocked: true; Granted Authorities: ROLE_ONE,ROLE_TWO; Credentials: [PROTECTED]; Authenticated: true; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@fffe3f86: RemoteIpAddress: 127.0.0.1; SessionId: 02A95844E8A829868542290D471503F5; Granted Authorities: ROLE_ONE, ROLE_TWO, ROLE_THREE' stored to HttpSession: 'org.apache.catalina.session.StandardSessionFacade@64307ead
2016-05-29 14:48:24.489 DEBUG 5533 --- [io-7777-exec-10] s.s.w.c.SecurityContextPersistenceFilter : SecurityContextHolder now cleared, as request processing completed
在这里，我假设TextBox1和TextBox2是你想要的字段，而Button1是保存按钮。