如果你对编程和开发AutoCAD.net 插件还是新手，那么AutoCAD开发者中心最近发布的“My First AutoCAD Plug-in”系列课程绝对值得一看。这个课程面向编程零基础但想对AutoCAD进行扩展的童鞋们。你可以使用免费的Visual Studio Express版本来开发。 AutoCAD开发者中心还提供了The AutoCAD 2010-2012 .NET Wizards项目向导，帮助你来快速的创建一个AutoCAD.net插件，并且这个向导还能帮你做好在Visual Studio Express版本中启动AutoCAD进行调试的相关设置，而这在Visual Studio Express的界面中的没有的。

如果你使用VB.net Express 2010 并利用The AutoCAD 2010-2012 .NET Wizards创建了一个AutoCAD.net 插件，按F5启动调试时，在”即时”窗口中可能会发现很多错误。这些错误并不影响你程序的运行，但你往往需要等待好长时间才能开发调试工作。

相关的错误信息类似：

'----Immediate Window--------------------------------------

System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='ToolBarCustomizeButton' (HashCode=44123454); target element is 'ToolBarToggleButton' (Name='mCustomizeButton'); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='ToolBarCustomizeButton' (HashCode=44123454); target element is 'ToolBarToggleButton' (Name='mCustomizeButton'); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='ToolBarCustomizeButton' (HashCode=44123454); target element is 'RibbonItemControl' (Name=''); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='InfoCenterTextBox' (HashCode=52380055); target element is 'RibbonItemControl' (Name=''); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='InfoCenterTextBox' (HashCode=52380055); target element is 'Button' (Name='PART_AcceptButton'); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='WebServicesLoginButton' (HashCode=720995); target element is 'LoginButtonRibbonItemControl' (Name='mContainer'); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='RibbonToggleButton' (HashCode=43678569); target element is 'RibbonItemControl' (Name=''); target property is 'Name' (type 'String') 
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=AutomationName; DataItem='WebServicesLoginButton' (HashCode=720995); target element is 'WebservicesLoginButtonControl' (Name='mDropDownButton'); target property is 'Name' (type 'String') 
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Autodesk.Private.Windows.ToolBars.ToolBarControl', AncestorLevel='1''. BindingExpression:Path=IsVisible; DataItem=null; target element is 'ImageControl' (Name='mImage'); target property is 'NoTarget' (type 'Object') 
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Autodesk.Private.Windows.ToolBars.ToolBarControl', AncestorLevel='1''. BindingExpression:Path=IsVisible; DataItem=null; target element is 'ImageControl' (Name='mImage'); target property is 'NoTarget' (type 'Object') 
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Autodesk.Private.Windows.ToolBars.ToolBarControl', AncestorLevel='1''. BindingExpression:Path=IsVisible; DataItem=null; target element is 'ImageControl' (Name='mImage'); target property is 'NoTarget' (type 'Object') 
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Autodesk.Private.Windows.ToolBars.ToolBarControl', AncestorLevel='1''. BindingExpression:Path=IsVisible; DataItem=null; target element is 'ImageControl' (Name='mImage'); target property is 'NoTarget' (type 'Object') 
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Autodesk.Private.Windows.ToolBars.ToolBarControl', AncestorLevel='1''.

解决的办法就是添加下面的 <system.diagnostics>节到 Acad.exe.Config中，这个文件可以在你的AutoCAD安装目录中找到：

    <system.diagnostics>
    <sources>                                                                                                                                                                                      
      <source name="System.Windows.Data"               
              switchName="SourceSwitch">
        <listeners>
          <remove name="Default" />
        </listeners>
      </source>
    </sources>
  </system.diagnostics>

添加完成后，类似下面的样子（这里我使用的是Civil 3D）：

<configuration>
    <startup useLegacyV2RuntimeActivationPolicy="true">
        <supportedRuntime version="v4.0"/>
    </startup>
    <!--All assemblies in AutoCAD are fully trusted         
so there's no point generating publisher evidence-->
    <runtime>
        <generatePublisherEvidence enabled="false"/>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">                    
            <probing privatePath="bin\FDO;bin;Plugins\Workflow\Activities"/>
       </assemblyBinding>
   </runtime>
        
    <system.diagnostics>
    <sources>                                                                                                                                                                                      
      <source name="System.Windows.Data"               
              switchName="SourceSwitch">
        <listeners>
          <remove name="Default" />
        </listeners>
      </source>
    </sources>
  </system.diagnostics>

</configuration>

希望对你有帮助。