我得到的错误就像无法绑定到'formGroup',因为它不是一个已知的属性'form'.but我导入FormsModule,ReactiveFormsModule和声明在导入,但我得到同样的错误,请任何一个帮助我感谢我的 代码:无法绑定到'formGroup',因为它不是'form'的已知属性。在角4
<form [formGroup]="loginForm" (submit)="login()" class="md-form-auth form-validation" (keypress)="keyDownFunction($event)">
<fieldset>
<div class="form-group">
<md-input-container class="full-width md-icon-left">
<md-icon class="material-icons">mail_outline</md-icon>
<input mdInput type="email" placeholder="Email"
formControlName="Username">
</md-input-container>
</div>
<div class="form-group">
<md-input-container class="full-width md-icon-left">
<md-icon class="material-icons">lock_outline</md-icon>
<input mdInput type="password" placeholder="Password"
formControlName="Password">
</md-input-container>
</div>
<button [disabled]="!loginForm.valid" md-raised-button type="button" color="primary" class="float-right">
Login
</button>
</fieldset>
</form>
你的组件是怎样的? – Alex
您是否在正确的模块中导入了'ReactiveFormsModule'?请创建一个_minimal_复制。 –