在 vb.net 中序列化 xml 时出现 InvalidOperationException

Question

我有以下 vb.net 代码，我试图从 XML 文件中读取内容并将其存储到自定义类列表中。当调试器尝试执行语句时，我的应用程序崩溃了

 Dim serializer As New XmlSerializer(GetType(ItemInfo))

这里的ItemInfo是我用过的一个类。如果我尝试 GetTyp(ItemInfo) 我得到所需的属性，只是 XML 序列化程序没有被初始化

我的完整代码如下：

Private Sub Form4_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Dim fi As System.IO.FileInfo = New IO.FileInfo(System.IO.Path.Combine(Application.StartupPath, "items.xml"))
    If fi.Exists Then
        Dim lst As New List(Of ItemInfo)
        Dim serializer As New XmlSerializer(GetType(ItemInfo)) ->Stuck here 
        Dim fs As New IO.FileStream("items.xml", IO.FileMode.Open)
        Dim reader As System.Xml.XmlReader = System.Xml.XmlReader.Create(fs)
        lst = serializer.Deserialize(reader)
        fs.Close()
    End If
End Sub

调试窗口的输出：

'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities.Sync\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.Sync.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\assembly\GAC_MSIL\Microsoft.VisualStudio.Debugger.Runtime\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.Debugger.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Users\vparthasarat\Documents\Visual Studio 2013\Projects\temme\temme\bin\Debug\temme.vshost.exe'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_64\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Deployment\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Deployment.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Data.DataSetExtensions\v4.0_4.0.0.0__b77a5c561934e089\System.Data.DataSetExtensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    The thread 0x1d3c has exited with code 259 (0x103).
    The thread 0x2164 has exited with code 259 (0x103).
    The thread 0x1c1c has exited with code 259 (0x103).
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Users\vparthasarat\Documents\Visual Studio 2013\Projects\temme\temme\bin\Debug\temme.exe'. Symbols loaded.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Remoting\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Remoting.dll'. Symbols loaded.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Users\vparthasarat\Documents\Visual Studio 2013\Projects\temme\temme\bin\Debug\System.Windows.Forms.Calendar.dll'. Symbols loaded.
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'Microsoft.GeneratedCode'. 
    A first chance exception of type 'System.InvalidOperationException' occurred in System.Xml.dll
    'temme.vshost.exe' (CLR v4.0.30319: temme.vshost.exe): Loaded 'C:\Windows\assembly\GAC\stdole\7.0.3300.0__b03f5f7f11d50a3a\stdole.dll'. Module was built without symbols.
    The program '[2408] temme.vshost.exe' has exited with code -1073741819 (0xc0000005) 'Access violation'.

有什么建议可以帮助我在这里进步吗？

Answer 1

我看了下面的链接，发现出现这个异常是正常的..

XmlSerializer giving FileNotFoundException at constructor

感谢@sriram 指导我完成这个:)