当我运行我的应用程序时,我有这个异常
Cannot create instance of 'MainWindow' defined in assembly 'MediaTransferTester, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Exception has been thrown by the target of an invocation. Error in markup file 'MainWindow.xaml' Line 1 Position 9.
这是我的 xaml 代码
<Window x:Class="MediaTransferTester.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow"
Width="878"
Height="588">
<Grid Width="853" Height="525">
<GroupBox Name="groupBox1"
Width="504"
Margin="12,12,0,316"
HorizontalAlignment="Left"
Header="EndPoint Config">
<Grid Width="468" Height="139">
<Label Name="label1"
Width="108"
Height="28"
Margin="6,12,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="Loal IPs" />
<Label Name="label2"
Width="108"
Height="28"
Margin="6,46,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="Remote IP" />
<Label Name="label3"
Width="58"
Margin="183,12,0,116"
HorizontalAlignment="Left"
Content="RTP Port" />
<Label Name="label4"
Width="58"
Height="28"
Margin="183,47,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="RTP Port" />
<Label Name="label5"
Height="28"
Margin="6,84,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="TransportType" />
<RadioButton Name="rbUDP"
Height="16"
Margin="112,89,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="UDP"
GroupName="TransportType"
IsChecked="True" />
<RadioButton Name="rbMSTP"
Height="16"
Margin="165,89,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="MSTP"
GroupName="TransportType" />
<RadioButton Name="rbTCPConnect"
Height="16"
Margin="226,89,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="TCP Connect"
GroupName="TransportType" />
<RadioButton Name="rbTcpListen"
Width="76"
Height="16"
Margin="317,89,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="TCP Listen"
GroupName="TransportType" />
<ListBox Name="listBoxEndPointAddress"
Width="102"
Height="37"
Margin="75,11,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Visible" />
<TextBox Name="TBRemoteEndpointIP"
Width="102"
Height="23"
Margin="75,52,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
LostFocus="TBRemoteEndpointIP_LostFocus" />
<TextBox Name="LocalrtpPort"
Width="38"
Height="23"
Margin="247,12,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
LostFocus="LocalrtpPort_LostFocus"
MaxLength="4" />
<TextBox Name="RemotertpPort"
Width="38"
Height="23"
Margin="247,46,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
LostFocus="RemotertpPort_LostFocus"
MaxLength="4" />
<TextBox Name="localTcpPort"
Width="37"
Height="23"
Margin="0,12,75,0"
HorizontalAlignment="Right"
VerticalAlignment="Top"
LostFocus="localTcpPort_LostFocus"
MaxLength="4" />
<TextBox Name="RemoteTcpPort"
Width="37"
Height="23"
Margin="356,46,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
LostFocus="RemoteTcpPort_LostFocus"
MaxLength="4" />
<Label Name="label9"
Width="57"
Margin="291,11,0,117"
HorizontalAlignment="Left"
Content="TCP Port" />
<Label Name="label11"
Width="57"
Height="28"
Margin="291,49,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="TCP Port" />
</Grid>
</GroupBox>
<GroupBox Name="groupBox2"
Width="504"
Height="269"
Margin="12,215,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Header="AudioConfig">
<Grid Width="486"
Height="245"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<Label Name="label6"
Width="90"
Height="28"
Margin="15,30,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="Source Devices" />
<Label Name="label7"
Width="108"
Height="28"
Margin="15,89,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="Sink Devices" />
<Label Name="label10"
Height="28"
Margin="15,150,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="Send Audio Codecs" />
<ListBox Name="SourceDeviceList"
Width="229"
Height="52"
Margin="150,6,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Visible" />
<ListBox Name="SinkDeviceList"
Width="229"
Height="53"
Margin="150,64,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Visible" />
<Label Name="label8"
Width="122"
Height="28"
Margin="15,211,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Content="Receive Audio Codecs" />
<ListBox Name="SendCodecsNamelistBox"
Width="229"
Height="55"
Margin="150,123,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Visible" />
<ListBox Name="ReceiveCodecsNamelistBox"
Width="229"
Height="56"
Margin="150,183,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Visible" />
</Grid>
</GroupBox>
<Button Name="btnStartSend"
Width="75"
Height="23"
Margin="12,490,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Click="btnStartSend_Click"
Content="Start Send" />
<Button Name="btnSaveConfig"
Width="109"
Height="23"
Margin="195,490,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Click="btnSaveConfig_Click"
Content="Save Configration" />
<TextBox Name="StatTextBox"
Width="319"
Height="461"
Margin="522,23,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Background="Black"
FontFamily="Consolas"
FontSize="9"
Foreground="White"
IsEnabled="True"
IsReadOnly="True"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Auto" />
<Button Name="btnStartReceve"
Width="75"
Height="23"
Margin="93,490,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Click="btnStartReceve_Click"
Content="Start Receve" />
</Grid>
</Window>
这是异常详细信息
System.Windows.Markup.XamlParseException 未处理消息=无法创建在程序集“MediaTransferTester,版本=1.0.0.0,文化=中性,PublicKeyToken=null”中定义的“主窗口”实例。调用的目标已引发异常。标记文件“MainWindow.xaml”第 1 行位置 9 中的错误。Source=PresentationFramework LineNumber=1 LinePosition=9 StackTrace:在 System.Windows.Markup.XamlParseException.ThrowException(字符串消息,异常 innerException,Int32 lineNumber,Int32 linePosition,Uri baseUri , XamlObjectIds currentXamlObjectIds, XamlObjectIds contextXamlObjectIds, Type objectType) 在 System.Windows.Markup.XamlParseException.ThrowException(ParserContext parserContext, Int32 lineNumber, Int32 linePosition, String message, Exception innerException) 在系统。Source=mscorlib StackTrace:在 System.RuntimeType.CreateInstanceSlow(Boolean publicOnly,Boolean fillCache)在 System.RuntimeType.CreateInstanceImpl(在 System.RuntimeTypeHandle.CreateInstance(RuntimeType 类型,Boolean publicOnly,Boolean noCheck,Boolean& canBeCached,RuntimeMethodHandle& ctor,Boolean& bNeedSecurityCheck)布尔publicOnly,布尔skipVisibilityChecks,布尔fillCache)在System.Activator.CreateInstance(类型类型,布尔非公共)在System.Windows.Markup.BamlRecordReader.CreateInstanceFromType(类型类型,Int16 typeId,布尔throwOnFail)内部异常:System.NullReferenceException消息=对象引用未设置为对象的实例。来源 = MediaTransferTester StackTrace: