NullInjectorError：添加mat对话框时没有提供MatDialog的提供程序

Question

Am getting "NullInjectorError: No provider for MatDialog", below is the code

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https://stackblitz.com/edit/tms-prototype

Answer 1

You should import MatDialog from the same place where you have imported MatDialogModule since they represent different bundles.

So use:

import { MatDialog, MatDialogRef, MAT_DIALOG_DATA } from '@angular/material/dialog';
                                                                           ^^^^^^^

instead of

import { MatDialog, MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';

because you imported MatDialogModule in SharedModule from @angular/material/dialog

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