"Object reference not set to an instance of an object. " and connection string

Hi, I am deploying my web through a web hosting services which provides SQL database support. I got following errors whenever I try to open my webpage,which never happen when I run my web on the local machine.

I have my connection string configured in my web.config as below:

<addname="ArtHouseConnection"connectionString="Server=serveripaddress; Integrated Security=True; Database=arteh3_database;User Id=username;Password=password;"providerName="System.Data.SqlClient"/>

<addname="ASPNETDBConnectionString1"connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\ASPNETDB.MDF;Integrated Security=True;User Instance=True"providerName="System.Data.SqlClient"/>

This is the source code where error was generated:

public

staticclass ArtHouseConfiguration

{

//cache connection stringprivatereadonlystaticstring dbConnectionString;//cache data provider nameprivatereadonlystaticstring dbProviderName;

privatereadonlystaticstring siteName;

//initialize constructor propertiesstatic ArtHouseConfiguration()

{

dbConnectionString = ConfigurationManager.ConnectionStrings[

"ArtHouseConnection"].ConnectionString;

dbProviderName = ConfigurationManager.ConnectionStrings[

"ArtHouseConnection"].ProviderName;

siteName = ConfigurationManager.AppSettings["SiteName"];

}

and finally this is the error mg I got:

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 30: static ArtHouseConfiguration()Line 31: {Line 32: dbConnectionString = ConfigurationManager.ConnectionStrings["ArtHouseConnection"].ConnectionString;Line 33: dbProviderName = ConfigurationManager.ConnectionStrings["ArtHouseConnection"].ProviderName;Line 34:

Source File:d:\inetpub\vhosts\artehouse.org\httpdocs\App_Code\ArtHouseConfiguration.cs Line:32

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.] ArtHouseConfiguration..cctor() in d:\inetpub\vhosts\artehouse.org\httpdocs\App_Code\ArtHouseConfiguration.cs:32[TypeInitializationException: The type initializer for 'ArtHouseConfiguration' threw an exception.] ArtHouseConfiguration.get_EnableErrorLogEmail() in d:\inetpub\vhosts\artehouse.org\httpdocs\App_Code\ArtHouseConfiguration.cs:74 Utilities.LogError(Exception ex) in d:\inetpub\vhosts\artehouse.org\httpdocs\App_Code\Utilities.cs:100 ASP.global_asax.Application_Error(Object sender, EventArgs e) in d:\inetpub\vhosts\artehouse.org\httpdocs\Global.asax:20 System.EventHandler.Invoke(Object sender, EventArgs e) +0 System.Web.HttpApplication.RaiseOnError() +182

Anyone got any ideas? thank you!

Hi genjioo,

This seems to have something to do with the web.config file.

Please check if the connections strings have been put under the configuration\connectionStrings section. Here is a typical sample

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<connectionStrings>
<add name="ConnStr1" connectionString="LocalSqlServer: data source=127.0.0.1;Integrated Security=SSPI;Initial Catalog=aspnetdb"
providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>

If it is not put under this, the ConfigurationManager.ConnectionStrings will not be able to find it.

"Cannot find keycodev2.dll or invalid keycode" for certain user account

Hi,

I've created program that sits on a server and provides some reporting functionality. The user submits a SQL Server job that calls this program, passing in some command args.

The SQL Server job is submitted by a C# program that is using a non-sysadmin connection account, therefore it is calling SETUSER to change the job mapping to a local user account, called MYSERVER\SQLServerJobs - I've granted it local admin rights.

Whenever SQL Server attempts to run this job, it's failing with the "Cannot find keycodev2.dll or invalid keycode" error. It's definitely not an install problem, I can run the program from command line using a domain account and it's fine. I guess its a permissions problem with the local account, but I can't put my finger on it!

Again, the local account is in the Administrators group & I've even explicitly granted it rights to the two registry keys

HKEY_CLASSES_ROOT\Interface\{4A4D268A-DF9B-4FC1-8301-D9FEEEF69F9C}

- HKEY_CLASSES_ROOT\TypeLib\{8D43D0B9-C14E-4577-9E67-A9A1EEF82302}

as detailed in some Crystal troubleshooting documents.

Anything else I should check for??

ThanksSOLVED:

I went back onto the machine, logging on as the local user account SQLServerJobs. I then reinstalled the 'CrystallInstaller' setup I had created (just all the merge modules that are required) & made sure the 'For everyone' box was checked - Now works fine.

I reckon i flew through the install the first time round and didn't check the 'For Everyone' box - can't remember to be honest, but would make sense!!