我正在尝试在我的HTML模板中表示一个表单生成器：
this.form = fb.group({
HTTPMethod: [],
processes: fb.group({
Process: fb.group({
id: []
})
})
对于HTTPMethod，我这样做：
<div class="form-group">
<label for="HTTPMethod">Http Method</label>
<select
ngControl="HTTPMethod"
#frequency="ngForm"
id="HTTPMethod"
class="form-control"
required>
<option value="3"></option>
<option *ngFor="#HTTPMethod of HTTPMethods" value="{{ HTTPMethod.label }}">
{{ HTTPMethod.label }}
</option>
</select>
</div>
但我无法遇到错误的进程： control.registerOnChange is not a function in [processes in ] ，这是我的 processes HTML表示：
<div class="form-group">
<label for="processes">Process List</label>
<select
ngControl="processes"
#frequency="ngForm"
id="processes"
class="form-control" required>
<option value=""></option>
<option *ngFor="#process of processes?.processList.list"
value="{{ process.id }}">
{{ process.id }}
</option>
</select>
</div>
Thank you in advance friends !!!