"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.