类型或命名空间名称“.NET AddTeacherPage”找不到错误

Question

祝你好运。

我在控制台上看到了这些错误：

Severity    Code    Description Project File    Line    Suppression State
Error   CS0246  The type or namespace name 'AddTeacherPage' could not be found (are you missing a using directive or an assembly reference?)    StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_TeacherManage_AddTeacher_cshtml.g.cs   123 Active
Error   CS0246  The type or namespace name 'AddTeacherPage' could not be found (are you missing a using directive or an assembly reference?)    StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_TeacherManage_AddTeacher_cshtml.g.cs   126 Active
Error   CS0246  The type or namespace name 'AddTeacherPage' could not be found (are you missing a using directive or an assembly reference?)    StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_TeacherManage_AddTeacher_cshtml.g.cs   125 Active
Error   CS0246  The type or namespace name 'AddStudentPage' could not be found (are you missing a using directive or an assembly reference?)    StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_StudentManage_AddStudent_cshtml.g.cs   113 Active
Error   CS0246  The type or namespace name 'AddStudentPage' could not be found (are you missing a using directive or an assembly reference?)    StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_StudentManage_AddStudent_cshtml.g.cs   112 Active
Error   CS0246  The type or namespace name 'AddStudentPage' could not be found (are you missing a using directive or an assembly reference?)    StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_StudentManage_AddStudent_cshtml.g.cs   110 Active
Error   CS0246  The type or namespace name 'AddClassPage' could not be found (are you missing a using directive or an assembly reference?)  StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_ClassManage_AddClass_cshtml.g.cs   109 Active
Error   CS0246  The type or namespace name 'AddClassPage' could not be found (are you missing a using directive or an assembly reference?)  StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_ClassManage_AddClass_cshtml.g.cs   108 Active
Error   CS0246  The type or namespace name 'AddClassPage' could not be found (are you missing a using directive or an assembly reference?)  StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_ClassManage_AddClass_cshtml.g.cs   106 Active
Error   CS0246  The type or namespace name 'ManageClassPage' could not be found (are you missing a using directive or an assembly reference?)   StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_ClassManage_ManageClass_cshtml.g.cs    62  Active
Error   CS0246  The type or namespace name 'ManageStudentPage' could not be found (are you missing a using directive or an assembly reference?) StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_StudentManage_ManageStudent_cshtml.g.cs    62  Active
Error   CS0246  The type or namespace name 'ManageTeacherPage' could not be found (are you missing a using directive or an assembly reference?) StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_TeacherManage_ManageTeacher_cshtml.g.cs    62  Active
Error   CS0246  The type or namespace name 'ManageClassPage' could not be found (are you missing a using directive or an assembly reference?)   StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_ClassManage_ManageClass_cshtml.g.cs    61  Active
Error   CS0246  The type or namespace name 'ManageStudentPage' could not be found (are you missing a using directive or an assembly reference?) StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_StudentManage_ManageStudent_cshtml.g.cs    61  Active
Error   CS0246  The type or namespace name 'ManageTeacherPage' could not be found (are you missing a using directive or an assembly reference?) StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_TeacherManage_ManageTeacher_cshtml.g.cs    61  Active
Error   CS0246  The type or namespace name 'ManageClassPage' could not be found (are you missing a using directive or an assembly reference?)   StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_ClassManage_ManageClass_cshtml.g.cs    59  Active
Error   CS0246  The type or namespace name 'ManageStudentPage' could not be found (are you missing a using directive or an assembly reference?) StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_StudentManage_ManageStudent_cshtml.g.cs    59  Active
Error   CS0246  The type or namespace name 'ManageTeacherPage' could not be found (are you missing a using directive or an assembly reference?) StudentAndClassWebApp   C:\Users\emiry\source\repos\StudentAndClassWebApp\StudentAndClassWebApp\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_TeacherManage_ManageTeacher_cshtml.g.cs    59  Active

出于某种原因，在我突然调试它时，它开始出现错误。

由于它们中的错误都是相同的，所以我将代码放在一页：

@page
@model AddTeacherPage
@{
    ViewData["Title"] = "Home page";
}

<div class="p-3 mb-2 bg-dark text-white">
    <h2 class="display-4">Add Teacher</h2>
</div>
<p>Welcome the teacher management page.</p>
<form>
  <div class="form-group">
    <label for="teacherIdInput">Teacher ID (number only):</label>
    <input type="number" class="form-control" min="0" id="TeacherId" placeholder="Teacher ID">
  </div>
  <div class="form-group">
    <label for="teacherNameInput">Teacher Name:</label>
    <input type="text" class="form-control" id="TeacherNameID" placeholder="Teacher Name">
  </div>
  <select class="form-control">
    <label for="teacherClassSelect">Teacher Class</label>
    <option>Test</option>
  </select>
</form>

我怎样才能解决这个问题？提前谢谢你的帮助。

Answer 1

点击第二行的AddTeacherPage。按Ctrl+.采取快速行动。应该有一个选项向页面添加一个using语句，该语句定义包含模型类的命名空间。