conectionstring error on server page

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my application in localhost running successfully but whenever am running on server after hosting am getting the fallowing error plz help me..thank you in advance .

<br />
Server Error in '/' Application.<br />

The connection name 'ConnectionString' was not found in the applications configuration or the connection string is empty.

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.InvalidOperationException: The connection name 'ConnectionString' was not found in the applications configuration or the connection string is empty.

Source Error:

Line 9: Testimonials :

Line 10:
Line 11: <asp:DataList ID="DataList1" runat="server"
Line 12: onselectedindexchanged="DataList1_SelectedIndexChanged1" ConnectionString="<%$ ConnectionStrings:ConnectionString %>">
Line 13:

Source File: \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\Testimonials2.aspx Line: 11

Stack Trace:

[InvalidOperationException: The connection name 'ConnectionString' was not found in the applications configuration or the connection string is empty.]
System.Web.Compilation.ConnectionStringsExpressionBuilder.GetConnectionString(String connectionStringName) +2471546
ASP.testimonials2_aspx.__BuildControlDataList1() in \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\Testimonials2.aspx:11
ASP.testimonials2_aspx.__BuildControlContent2(Control __ctrl) in \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\Testimonials2.aspx:5
System.Web.UI.CompiledTemplateBuilder.InstantiateIn(Control container) +12
ASP._4isolutions_master.__BuildControlContentPlaceHolder1() in \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\4isolutions.master:49
ASP._4isolutions_master.__BuildControlform1() in \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\4isolutions.master:16
ASP._4isolutions_master.__BuildControlTree(_4isolutions_master __ctrl) in \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\4isolutions.master:1
ASP._4isolutions_master.FrameworkInitialize() in \\fs8-n01\stor11wc2dfw1\450429\592629\www.4i-solutions.com\web\content\4isolutions.master.cs:912308
System.Web.UI.UserControl.InitializeAsUserControlInternal() +35
System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, IDictionary contentTemplateCollection) +8673087
System.Web.UI.Page.get_Master() +51
System.Web.UI.Page.ApplyMasterPage() +15
System.Web.UI.Page.PerformPreInit() +45
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +282

Version Information: Microsoft .NET Framework Version:2.0.50727.4961; ASP.NET Version:2.0.50727.4955

Posted 28-Nov-11 19:21pm

sreedharmasula

Updated 28-Nov-11 19:29pm

Prince Antony G

v3

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D K N T H 29-Nov-11 1:25am

are you using iis7?

3 solutions

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Nickos_me · Answer 1 · 2011-11-28T19:25:00

Solution 1

Check your web.config that can be found in website/application library on your web server.

Posted 28-Nov-11 19:25pm

Nickos_me

Comments

sreedharmasula 29-Nov-11 1:32am

i hav been added connectionstring still am getting the error
<connectionstrings>
<clear>
<remove name="LocalSqlServer">

<add name="4i-solutions" connectionstring="Data Source=mssql0818.wc2\inst2;Initial Catalog=450429_4isolution;Integrated Security=False; User ID=450429_4isolution; Password=solut@123A"
="" providername="System.Data.SqlClient">

koolprasad2003 · Answer 2 · 2011-11-28T19:27:00

Solution 2

You have not added connection string TAG in in your WEB.CONFIG

XML

<connectionStrings>
<add name="ConnectionString" connectionstring="Data Source=DBServerName;Integrated Security=false;Initial Catalog=DBName;User ID=DBLogin;Password=DBPassword" providername="System.Data.SqlClient" />

Posted 28-Nov-11 19:27pm

koolprasad2003

Updated 28-Nov-11 19:29pm

v2

Comments

sreedharmasula 29-Nov-11 1:32am

i hav been added connectionstring still am getting the error
<connectionstrings>
<clear>
<remove name="LocalSqlServer">

<add name="4i-solutions" connectionstring="Data Source=mssql0818.wc2\inst2;Initial Catalog=450429_4isolution;Integrated Security=False; User ID=450429_4isolution; Password=solut@123A"
="" providername="System.Data.SqlClient">

koolprasad2003 29-Nov-11 1:56am

Have you checked your connectionstring Name is "ConnectionString".
There might be chane of 'SPACE' in <asp:DataList> ConnectionString attribute.
check it.

Prince Antony G · Answer 3 · 2011-11-28T19:33:00

Solution 3

Check ur Webconfig file.

C#

<connectionstrings>
    <add name="ConnectionString" connectionstring="Data Source=ACC;Initial Catalog=TestProject;Persist Security Info=true; User Id=sa;Password=sa;" providername="System.Data.SqlClient" />
</connectionstrings>

Posted 28-Nov-11 19:33pm

Prince Antony G

v2