Could not load file or assembly 'CrystalDecisi

问题:

I have developed a simple project. where i have to print some crystal report. the project runs very well in local machine, but when i up this on a web hosting server, it shows me an error when crystal report viewing.

Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Assembly Load Trace: The following information can be helpful to determine why the assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' 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].

Please any one can help me .....

回答1:

As I said in comment your crystaldecisions.reportappserver.commlayer.dll is not copied / present on your server. So for this you have to manually copy the dll and paste into you Bin folder

To copy a DLL from visual studio project follow the steps

1.Expand your Project's References hierarchy (Project should not be in debug mod)

2.Right Click on Particular Dll (in your case crystaldecisions.reportappserver.commlayer.dll) and select Properties and set 'Copy Local' attribute to TRUE

3 Build your project. The Dll should be there in your BIN Folder.

回答2:

I had the same error after moving to a new laptop (Windows 10). In addition to setting Copy Local to true as mentioned above, I had to install the Crystal Reports 32-bit runtime engine for .Net Framework, even though everything else is set to run in a 64-bit environment. Hope that helps.

回答3:

Edit Web Config for each crystaldecisions file version make it equal the same version off the dll file (from rght click on it and select from properties from solution explorer ) Eg. crystaldecisions.reportappserver.commlayer.dll --> 13.0.2000.0 after upgrade crystal report to CRforVS_13_0_21 edit it to ---> 13.0.35.00.0

回答4:

In the first plate you have to check that:

• 1) You install a appropriate version of Crystal Reports SDK => http://downloads.i-theses.com/index.php?option=com_downloads&task=downloads&groupid=9&id=101 (for example)
• 2) Add reference to dll => crystaldecisions.reportappserver.commlayer.dll

回答5:

Somehow I had the wrong versions of the DLLs registered in my project.

• I removed the three references to the Crystal Report dlls from my project.
• I right click References, and click Add Reference
• In the popup window, I click the Browse menu on the left and the Browse button
• In the Directory window where your DLLs reside (perhaps your application's bin directory), select the three Crystal Reports DLLs and then click Add.
• Back at the Reference Manager window, click in the first column to the left of the three Crystal dlls, and then click OK
• At this point your Crystal Reports should work again.