Could not load file or assembly 'Microsoft.ReportViewer.WebForms' or 'Microsoft.ReportViewer.Common'
Server Error in '/Website1' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Could not load file or assembly 'Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Source Error:
Line 27: <compilation debug="true" targetFramework="4.0">
Line 28: <assemblies>
Line 29: <add assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
Line 30: <add assembly="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
Line 31: <add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
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Source File: D:\IntranetSites\ERP\web.config Line: 29
Assembly Load Trace: The following information can be helpful to determine why the assembly 'Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' could not be loaded.
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].
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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1
开发端测试没有问题，但是发布至服务器之后，运行程序，即发生配置错误，未能加载“ Microsoft.ReportViewer.WebForms ” 或者“Microsoft.ReportViewer.Common ”。
解决与原因，是因为服务器没有找到相关的DLL组件，而在开发端能正确运行，是因为在安装VS2010时，已经有此DLL组件了。
因此可以在添加参考介面找到相关的DLL:
此时你会发现两个版本9.0和10.0版本，你拷贝开发时相对应的版本即可。拷贝到哪里？拷贝至程序集的BIN目录下。Insus.NET是10.0版本的，所以只取这两个Microsoft.ReportViewer.Common.dll 和Microsoft.ReportViewer.WebForms.dll
