Material Design Table不接受dataSource對象

Question

我收到以下錯誤：

compiler.js：486未捕獲錯誤：模板解析錯誤：無法綁定到'dataSource'，因為它不是'table'的已知屬性。

我將一個表插入到自定義材料模態組件中，該組件應顯示歷史條目列表。

HistoryComponent：

 import { Component, OnInit, ViewChild } from "@angular/core"; import { MatTableDataSource, MatSort } from "@angular/material"; @Component({ selector: "app-history", templateUrl: "./history.component.html", styleUrls: ["./history.component.scss"], }) export class HistoryComponent implements OnInit { displayedColumns = ["position", "name", "weight", "symbol"]; dataSource = ELEMENT_DATA; constructor() { } ngOnInit() { } } export interface Element { name: string; position: number; weight: number; symbol: string; } const ELEMENT_DATA: Element[] = [ {position: 1, name: "Hydrogen", weight: 1.0079, symbol: "H"}, {position: 2, name: "Helium", weight: 4.0026, symbol: "He"}, {position: 3, name: "Lithium", weight: 6.941, symbol: "Li"}, {position: 4, name: "Beryllium", weight: 9.0122, symbol: "Be"}, {position: 5, name: "Boron", weight: 10.811, symbol: "B"}, {position: 6, name: "Carbon", weight: 12.0107, symbol: "C"}, {position: 7, name: "Nitrogen", weight: 14.0067, symbol: "N"}, {position: 8, name: "Oxygen", weight: 15.9994, symbol: "O"}, {position: 9, name: "Fluorine", weight: 18.9984, symbol: "F"}, {position: 10, name: "Neon", weight: 20.1797, symbol: "Ne"}, {position: 11, name: "Sodium", weight: 22.9897, symbol: "Na"}, {position: 12, name: "Magnesium", weight: 24.305, symbol: "Mg"}, {position: 13, name: "Aluminum", weight: 26.9815, symbol: "Al"}, {position: 14, name: "Silicon", weight: 28.0855, symbol: "Si"}, {position: 15, name: "Phosphorus", weight: 30.9738, symbol: "P"}, {position: 16, name: "Sulfur", weight: 32.065, symbol: "S"}, {position: 17, name: "Chlorine", weight: 35.453, symbol: "Cl"}, {position: 18, name: "Argon", weight: 39.948, symbol: "Ar"}, {position: 19, name: "Potassium", weight: 39.0983, symbol: "K"}, {position: 20, name: "Calcium", weight: 40.078, symbol: "Ca"}, ]; 

 <h2 mat-dialog-title>History</h2> <mat-dialog-content> <div class="example-container mat-elevation-z8"> <table mat-table #table [dataSource]="dataSource" matSort> <!-- Position Column --> <ng-container matColumnDef="position"> <th mat-header-cell *matHeaderCellDef mat-sort-header> No. </th> <td mat-cell *matCellDef="let element"> {{element.position}} </td> </ng-container> <!-- Name Column --> <ng-container matColumnDef="name"> <th mat-header-cell *matHeaderCellDef mat-sort-header> Name </th> <td mat-cell *matCellDef="let element"> {{element.name}} </td> </ng-container> <!-- Weight Column --> <ng-container matColumnDef="weight"> <th mat-header-cell *matHeaderCellDef mat-sort-header> Weight </th> <td mat-cell *matCellDef="let element"> {{element.weight}} </td> </ng-container> <!-- Symbol Column --> <ng-container matColumnDef="symbol"> <th mat-header-cell *matHeaderCellDef mat-sort-header> Symbol </th> <td mat-cell *matCellDef="let element"> {{element.symbol}} </td> </ng-container> <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr> <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr> </table> </div> </mat-dialog-content> <mat-dialog-actions> <button mat-button [mat-dialog-close]="true">OK</button> </mat-dialog-actions> 

我在不同的材料模塊中導入了MatTableModule ，僅用於材料設計組件。 這工作正常。

我在這里錯過了什么？

更新：下面的Kim Kern回答我可以再次編譯並且沒有錯誤，但是我的dataSource對象沒有被使用而且表是空的。

Answer 1

選擇器table[mat-table]僅由此提交添加。 這僅適用於@angular/material第6版。 如果您仍然使用版本5，則必須使用標簽mat-table而不是table與指令mat-table ：

<table mat-table #table [dataSource]="dataSource" matSort>

變

<mat-table #table [dataSource]="dataSource" matSort>

Answer 2

我很多次遇到這個問題，但最后我得到了解決方案，解決方案是你沒有導入MatTableModule或者沒有正確導入。 如果仍然沒有找到解決方案，請刪除MatTableModule，然后您將看到您的錯誤將是相同的。