Question

您好我在我的InitializeComponent页面中收到了app.xaml.cs的错误我检查了网络，但没有任何解决方案可行。请帮忙。

C＃文件：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using Newtonsoft.Json;

namespace Miser_sApp
{
     public partial class App : Application
    {
          /// <summary>
         /// Provides easy access to the root frame of the Phone Application.
         /// </summary> 
         /// <returns>The root frame of the Phone Application.</returns>
          public PhoneApplicationFrame RootFrame { get; private set; }

         /// <summary> 
         /// Constructor for the Application object.
         /// </summary>
        public App()
         {
             // Global handler for uncaught exceptions. 
              UnhandledException += Application_UnhandledException;

             // Standard Silverlight initialization
             InitializeComponent();

             // Phone-specific initialization
            InitializePhoneApplication();

            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                // Show the areas of the app that are being redrawn in each frame.
                //Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode, 
                 // which shows areas of a page that are handed off to GPU with a colored overlay.
                //Application.Current.Host.Settings.EnableCacheVisualization = true;

                // Disable the application idle detection by setting the UserIdleDetectionMode property of the
                // application's PhoneApplicationService object to Disabled.
                 // Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
                // and consume battery power when the user is not using the phone.
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }

       }

        // Code to execute when the application is launching (eg, from Start)
        // This code will not execute when the application is reactivated
        private void Application_Launching(object sender, LaunchingEventArgs e)
        {
        }

        // Code to execute when the application is activated (brought to foreground)
        // This code will not execute when the application is first launched
        private void Application_Activated(object sender, ActivatedEventArgs e)
        {
        }

         // Code to execute when the application is deactivated (sent to background)
        // This code will not execute when the application is closing
        private void Application_Deactivated(object sender, DeactivatedEventArgs e)
        {
        }

        // Code to execute when the application is closing (eg, user hit Back)
        // This code will not execute when the application is deactivated
        private void Application_Closing(object sender, ClosingEventArgs e)
        {
        }

        // Code to execute if a navigation fails
        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
       {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // A navigation has failed; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        // Code to execute on Unhandled Exceptions
        private void Application_UnhandledException(object sender,    ApplicationUnhandledExceptionEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // An unhandled exception has occurred; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
       }

        #region Phone application initialization

        // Avoid double-initialization
        private bool phoneApplicationInitialized = false;

        // Do not add any additional code to this method
        private void InitializePhoneApplication()
        {
            if (phoneApplicationInitialized)
                return;

            // Create the frame but don't set it as RootVisual yet; this allows the splash
            // screen to remain active until the application is ready to render.
            RootFrame = new PhoneApplicationFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;

            // Handle navigation failures
            RootFrame.NavigationFailed += RootFrame_NavigationFailed;

            // Ensure we don't initialize again
            phoneApplicationInitialized = true;
        }

        // Do not add any additional code to this method
        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
             // Set the root visual to allow the application to render
            if (RootVisual != RootFrame)
                RootVisual = RootFrame;

            // Remove this handler since it is no longer needed
             RootFrame.Navigated -= CompleteInitializePhoneApplication;
        }

        #endregion
    }
}

XAML文件：

<Application 
    x:Class="Miser_sApp.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"       
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone">

    <!--Application Resources-->
    <Application.Resources>
    </Application.Resources>

    <Application.ApplicationLifetimeObjects>
        <!--Required object that handles lifetime events for the application-->
        <shell:PhoneApplicationService 
            Launching="Application_Launching" Closing="Application_Closing" 
            Activated="Application_Activated" Deactivated="Application_Deactivated"/>
    </Application.ApplicationLifetimeObjects>

</Application>

我上传了app.xaml内容。我没有对它做任何改动。

Answer 1

此有两个可能的原因。

最常见的是 x：Class 与MainPage.xaml命名空间不匹配。确保MainPage.xaml中的x：Class具有正确的命名空间。
此问题的第二个最常见原因是MainPage.xaml的“Build Action”未设置为“Page”！

Answer 2

这是同一个问题和答案： The name 'InitializeComponent' does not exist in the current context

从其他项目导入类，或更改xaml文件的路径或xaml或.cs文件后面的命名空间时，可能会出现此错误。

一个：它的名称空间可能与您在新项目中的名称空间不同

namespace TrainerB.MVC.Forms
{
     public partial class AboutDeveloper : ContentPage
     {
          public AboutDeveloper()
          {
               InitializeComponent();
          }
     }
}

正如您所看到的，导入文件中的名称空间以旧项目名称开头：“TrainerB”，但您的新项目可能有不同的名称，因此只需将其更改为正确的新名称项目名称，在.xaml文件和后面的.cs文件中。

<强>两个

将.xaml文件的属性更改为：

构建操作：嵌入式资源

自定义工具： MSBuild：UpdateDesignTimeXaml

Answer 3

确保App.xaml的BuildAction设置为“ApplicationDefinition”
删除项目中的“obj”文件夹，重建。
如果问题仍然存在，请删除命名空间中的“_”字符。

Answer 4

我遇到了相同的构建错误，但构建操作已设置为Page。尝试将Build Action设置为ApplicationDefinition（错误：只能有一个实例），并将其设置回Page，修复了构建错误。听起来像黑魔法，但它对我有用。

Answer 5

这是另一种可能性，在用完所有上述内容之后（以及散布在互联网上的其他一些内容）：确保您的Startup对象在Project Properties＆gt中正确设置为[Project] .App ;应用选项卡。

我已经重命名了一些名称空间，并且在过程中的某个地方将Startup对象设置为＆＃34;（未设置）＆＃34;。

Answer 6

我的解决方案是将Package.appxmanifest的Build Action属性设置为AppxManifest。 :)

Answer 7

1）在xaml文件中，检查x：主布局的名称。重命名它 2）编译。它应该抛出错误 3）返回到xaml文件并提供相同的类名，因为它关联的文件后面的代码有（.cs文件）还包括命名空间。例如：如果命名空间是＆＃34; X＆＃34;和班级名称是＆＃34; Y＆＃34;，x：姓名=＆＃34; X.Y＆＃34; 4）编译。它应该工作。

Answer 8

这对我有用，在给你这个错误的页面上尝试 Ctrl + S 。当我的视觉工作室崩溃（重启）时，出现了错误。我正在处理的页面（重启之前）没有构建失败。这让我觉得没有正确保存。因此， Ctrl + S 。这解决了我的问题。

Answer 9

成功构建后，发生错误时，关闭VS，删除项目中隐藏的.vs文件夹（这将清除intellisense）。打开VS，错误消失了。

Answer 10

就我而言，我已将XAML页的构建操作设置为Embedded Resource，将其恢复为Page即可解决此问题。

当前上下文中不存在名称“InitializeComponent”。无法获得有关网络搜索的任何帮助

10 个答案: