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Tuesday, September 14, 2010

Attempted to read or write protected memory. This is often an indication that other memory has been corrupted.


Hit below error when deploy a new app to existing running application.

Attempted to read or write protected memory. This is often an indication that other memory has been corrupted. 
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.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory has been corrupted. 



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.


Try to set the folder permission but still hit the same error after restart iis. 


Next, i try to run the permissions wizard in the IIS. After run it, restart iis and i'm lucky. It work like normal.








Hope this help.



Saturday, July 17, 2010

Convert CString to std::string and vice versa

// convert from std:string to CString
CString errorMsg'
std::string encodeError = "Error 01";
errorMsg = CString(encodeError.c_str());



// convert from CString to std:string
CString csData = "f1db14dfa5d54f0b";
std::string ssData((LPCTSTR)csData);

Convert CString to char array

Again, when use CString, remember to include afxwin.h

char csRoom [20];
BSTR sRoom = "102";

CString myString1(sRoom);
strcpy(csRoom,myString1);

now, value from CString copied to char array

Convert BSTR to CString

When use CString, remember to include afxwin.h in your header.

BSTR sComPortNumber = "COM1";

//declare CString csComPortNumber and convert BSTR cComPortNumber to CString

CString csComPortNumber(sComPortNumber);

DONE.

Monday, March 29, 2010

Failed to access IIS metabase. An unhandled exception occurred during the execution of the current web request. Please review the stack ...

Hit below error when try to setup and new application in IIS.

Server Error in '/encelabs' Application.

--------------------------------------------------------------------------------

Failed to access IIS metabase.

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.Web.Hosting.HostingEnvironmentException: Failed to access IIS metabase.

The process account used to run ASP.NET must have read access to the IIS metabase (e.g. IIS://servername/W3SVC). For information on modifying metabase permissions, please see http://support.microsoft.com/?kbid=267904.

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.
Stack Trace:

[HostingEnvironmentException: Failed to access IIS metabase.]
System.Web.Configuration.MetabaseServerConfig.MapPathCaching(String siteID, VirtualPath path) +3492170
System.Web.Configuration.MetabaseServerConfig.System.Web.Configuration.IConfigMapPath.MapPath(String siteID, VirtualPath vpath) +9
System.Web.Hosting.HostingEnvironment.MapPathActual(VirtualPath virtualPath, Boolean permitNull) +163
System.Web.CachedPathData.GetConfigPathData(String configPath) +382
System.Web.CachedPathData.GetConfigPathData(String configPath) +243
System.Web.CachedPathData.GetApplicationPathData() +68
System.Web.CachedPathData.GetVirtualPathData(VirtualPath virtualPath, Boolean permitPathsOutsideApp) +3385679
System.Web.Configuration.RuntimeConfig.GetLKGRuntimeConfig(VirtualPath path) +189


Version Information: Microsoft .NET Framework

________________________________________________________

Solution:
For my case, the reason hit above error is because.NET Framework was installed before IIS server. To solve the problem, register .NET framework to IIS will do.

How to do that? (please be aware that the sample using for.NET Framework V1.0)

Steps:

1. Click on Start -> Run






2. Type in cmd and click OK





3. Command prompt screen will appear. go to"C:\Windows\Microsoft.NET\Framework\
v2.0.50727" folder by using command cd C:\Windows\Microsoft.NET\Framework\v2.0.50727 and hit enter. Please refer screen below:





4. Type in
aspnet_regiis -i and hit enter.




5. Screen below will be shown and dotnet user installed.




aspnet_regiis -i

alternatively you can copy and paste this command into windows command prompt

%windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -i

Ping a port

Well, sometimes we need to know whether the port in open or block, we need to do some checking or troubleshoot through ping/telnet. We cannot ping a IP with port but we can telnet certain IP together with Port no.

For example:
Go to open command prompt, if we want to check whether port 21 is working for IP 203.166.87.9 what we need to do is
> telnet 203.166.87.9 21

please tell me it's work. thanks

Thursday, March 25, 2010

Could not load file or assembly 'CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependenci

Deploy a web application that uses crystal report basic 10.5 and hit below error when try to access to the application.

"Could not load file or assembly 'CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified."

This is because we dont have crystal report basic runtime installed in the server.

Where do I get the basic (10.5) runtime? It's on your machine:
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages\CrystalReports10_5

My server is a 32 bit machine, so i install CRRedist2008_x86.msi in the machine.

Now what? I still can the same error? Wait, we need to restart the IIS to make it work. After restart the IIS, it's work perfectly.

STOP: c000021a (Fatal System error) The windows subsystem system process terminated unexpectedly with a status 0xc0000005

I hit below error/blue screen when trying to install MSSQL 2005 Express in a Microsoft XP pro SP2 machine:

STOP: c000021a (Fatal System error)
The windows subsystem system process terminated unexpectedly with a status 0xc0000005 (0x7c9106c3 0x0053ec24)

Try for 3 times to reinstall windows and no luck. Hit the same error when installing MSSQL 2005 Express.

Finally found an forum
http://blogs.msdn.com/petersad/archive/2009/01/20/sql-server-2005-sp3-sql-server-2005-sp2-cus-or-sql-server-2008-may-cause-xp-sp2-to-restart.aspx

And hotfix in http://support.microsoft.com/kb/943232

We have to register our email and the hotfix link come with password with send to our email.

After apply both hotfix. My problem solved.