ASP.NET Core Identity布局文件缺失：无法找到指定_Layout.cshtml

Hey there, let's work through these two issues one by one—they're both fixable with straightforward steps:

1. 修复缺失的 /Areas/Identity/Pages/_Layout.cshtml 文件 #

Identity scaffolding doesn't automatically generate this root layout file, so manual creation is the way to go:

• Navigate to your project's Areas/Identity/Pages directory
• Right-click and select Add > New Item, then create a Razor Layout file named _Layout.cshtml
• Copy the content from your existing Views/Shared/_Layout.cshtml into this new file (or customize it to match your project's design—just make sure to keep core parts like @RenderBody() and script references)

Here's a simplified example of what the file could look like:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>@ViewData["Title"] - YourProjectName</title>
    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
</head>
<body>
    <!-- Copy your header + logo code from Views/Shared/_Layout.cshtml here -->
    <header class="navbar navbar-expand-sm navbar-light bg-white border-bottom box-shadow">
        <div class="container">
            <a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">
                <img src="~/images/your-logo.png" alt="Project Logo" height="35" />
                YourProjectName
            </a>
            <!-- Add other navigation links as needed -->
        </div>
    </header>
    <div class="container mt-4">
        <main role="main">
            @RenderBody()
        </main>
    </div>

    <footer class="border-top text-muted mt-5">
        <div class="container">
            &copy; 2024 YourProjectName - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
        </div>
    </footer>

    <script src="~/lib/jquery/dist/jquery.min.js"></script>
    <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
    @await RenderSectionAsync("Scripts", required: false)
</body>
</html>

2. 修复个人资料页的Logo显示问题 #

The logo wasn't showing because the Identity layout file was missing, forcing the Manage page to use a barebones default layout. Now that we've created the correct layout, just verify these two things:

• Use root-relative paths for the logo: In your new Identity _Layout.cshtml, set the logo's src to ~/images/your-logo.png (the ~ points to your website's root directory, so it works no matter which area the page is in)
• Confirm the logo file exists: Make sure your logo is in the wwwroot/images folder, and that its properties are set to "Copy to Output Directory" (right-click the file > Properties > Copy to Output Directory: Copy if newer)
• Double-check the Manage layout reference: Open Areas/Identity/Pages/Account/Manage/_Layout.cshtml and ensure it's pointing to the correct layout:

  @{
      Layout = "/Areas/Identity/Pages/_Layout.cshtml";
  }
  

After making these changes, rebuild and run your project. The profile page should now display your logo just like the home page does.

内容的提问来源于stack exchange，提问作者Hamza Khanzada