Use PageHeader throughout the system

WebApp/Components/Features/Students/Edit.razor

@@ -1,25 +1,30 @@
 @page "/students/edit"
 @attribute [Authorize]
 @using Microsoft.EntityFrameworkCore
+@using WebApp.Components.Shared.Components
 @inject AppDbContext Context
 @inject NavigationManager NavigationManager
 
-<PageTitle>Edit Student - TSA Chapter Organizer</PageTitle>
-
-<MudText Typo="Typo.h3">Edit</MudText>
-<MudText Typo="Typo.h4">Student@(@Student == null ? "" : $" ({Student.Name})")</MudText>
-
-
-
 @if (Student is null)
 {
     <p><em>Loading...</em></p>
+    return;
 }
-else
-{
-    /* https://www.mudblazor.com/components/form */
-    /* https://medium.com/@husainalbar/applying-mudblazor-for-crud-operations-in-our-blazor-project-a343037a52ef */
-    <EditForm method="post" Model="Student" OnValidSubmit="UpdateStudent" FormName="edit" Enhance>
+
+<PageHeader
+    Title="Edit Student"
+    Subtitle="@($"{Student.FirstNameLastName}")"
+    ShowBackButton="true"
+    BackButtonUrl="@(ReturnUrl ?? "/students")">
+    <ActionButtons>
+        <MudButton OnClick="UpdateStudent" Variant="Variant.Filled" Color="Color.Primary">Save</MudButton>
+        <MudButton Href="@(ReturnUrl ?? "/students")" Variant="Variant.Text">Cancel</MudButton>
+    </ActionButtons>
+</PageHeader>
+
+@* https://www.mudblazor.com/components/form *@
+@* https://medium.com/@husainalbar/applying-mudblazor-for-crud-operations-in-our-blazor-project-a343037a52ef *@
+<EditForm method="post" Model="Student" OnValidSubmit="UpdateStudent" FormName="edit" Enhance>
         <AntiforgeryToken />
         <DataAnnotationsValidator/>
         <MudGrid>
@@ -45,10 +50,7 @@ else
                 </MudPaper>
             </MudItem>
         </MudGrid>
-        <MudButton StartIcon="@Icons.Material.Filled.ArrowBack" Href="@(ReturnUrl ?? "/students")">Back</MudButton>
-        <MudButton StartIcon="@Icons.Material.Filled.Save"  OnClick="UpdateStudent">Save</MudButton>
-    </EditForm>
-}
+</EditForm>
 
 @code {
     [SupplyParameterFromQuery]
@@ -74,7 +76,7 @@ else
     // For more information, see https://learn.microsoft.com/aspnet/core/blazor/forms/#mitigate-overposting-attacks.
     private async Task UpdateStudent()
     { 
-        if (Student.OfficerRole == 0)
+        if (Student?.OfficerRole == 0)
             Student.OfficerRole = null;
 
         Context.Attach(Student!).State = EntityState.Modified;