[英]How to bind data on angular material dropdown in angular 5?
basically i am Updating user profile on which i have a user info. 基本上我正在更新具有用户信息的用户资料。 which is to be bind on the user respective fields.
分别绑定到用户各自的字段上。
this.editOfferprice= new FormGroup({
xyz : new FormControl(xxxx,[]),
xxx: new FormControl(xxxx,[Validators.required]),
wwwID : new FormControl(xxxx,[Validators.required]))};
on above code am using formgroup and formcontrol. 在上面的代码上,我使用了formgroup和formcontrol。
<mat-form-field fxFlex="49"> <mat-select placeholder="Select xxx" formControlName="xxx"> <mat-option *ngFor="let P of Pro" [value]="P.ID"> {{P.Name}} </mat-option> </mat-select> <mat-error *ngIf="editOffer.controls['xxx'].errors && editOfferprice.controls['xxx'].errors.required"> You must select NAme</mat-error> </mat-form-field>
i want to know how to bind data on dropdown? 我想知道如何在下拉列表上绑定数据?
使用[ngValue]
*ngFor="let P of Pro" [ngValue]="P.ID">
Try binding using ngModel
in the select like this - 在这样的选择中尝试使用
ngModel
进行绑定-
<mat-form-field>
<select matNativeControl [(ngModel)]="selectedOption" required>
<option *ngFor="let P of Pro [value]="P.ID">{{P.Name}}</option>
</select>
</mat-form-field>
or if you want to use formControl do it like this - 或者,如果您想使用formControl,请按以下步骤进行操作-
[formControl]="yourControl"
Due to this issue in Angular bind the formControl instance instead of using formControlName . 由于Angular中的此问题 ,请绑定formControl实例,而不要使用formControlName 。
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