Security exception while opening an OleDBConnection

[Guest]

Hi,

I've created a web application and through this I want to import Excel data
to database.
Following is the code that I've written,

*******************************************************************
string fileLocation = txtboxFileName.Text.ToString();
string sheetName = "Import";
string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source="+fileLocation+";Extended Properties=Excel 8.0";
string strSQL = "select * from ["+sheetName+"$]";

OleDbConnection cn = new OleDbConnection(connectionString); // It's failing
here

cn.Open();
OleDbCommand cm = new OleDbCommand(strSQL,cn);
OleDbDataAdapter da = new OleDbDataAdapter(cm);
DataSet excelDS = new DataSet();
da.Fill(excelDS);
......................
......................
......................
*******************************************************************

I've used OleDBConnection for reading the excel, but it's giving me a
Security Exception.
Here's the exception:

####################################################################
Server Error in '/PreSa' Application.
--------------------------------------------------------------------------------

Security Exception
Description: The application attempted to perform an operation not allowed
by the security policy. To grant this application the required permission
please contact your system administrator or change the application's trust
level in the configuration file.

Exception Details: System.Security.SecurityException: Request failed.

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:

[SecurityException: Request failed.]
Try2.WebUserControl2.btnSend_Click(Object sender, EventArgs e) +0
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108

System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +2112
System.Web.UI.Page.ProcessRequest() +217
System.Web.UI.Page.ProcessRequest(HttpContext context) +18

System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +179
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
completedSynchronously) +87




--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.2300; ASP.NET
Version:1.1.4322.2300

####################################################################

Please help me as it's very urgent.

Thanks a ton.


Regards,
Lotus

 

[Scott Allen]

I've used OleDBConnection for reading the excel, but it's giving me a
Security Exception.
Here's the exception:

Someone has configured your application (or all web applications on
the machine) to run at less than full trust.

I'd start by looking in machine.config
(%WindowsDir%\Microsoft.NET\Framework\v1.1.4322\CONFIG)
for an element like: <trust level="Medium" ... />.

If not in machine.config, you might find it in your own web.config, or
a web.config in a higher directory.

See Using Code Access Security with ASP.NET [1] for more information.

[1]
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/html/THCMCh09.asp

 

[Guest]

No Scott,
It's still in "Full"...Even though am getting the error.
Please help me.

Thanks.

I've used OleDBConnection for reading the excel, but it's giving me a
Security Exception.
Here's the exception:

Someone has configured your application (or all web applications on
the machine) to run at less than full trust.

I'd start by looking in machine.config
(%WindowsDir%\Microsoft.NET\Framework\v1.1.4322\CONFIG)
for an element like: <trust level="Medium" ... />.

If not in machine.config, you might find it in your own web.config, or
a web.config in a higher directory.

See Using Code Access Security with ASP.NET [1] for more information.

[1]
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/html/THCMCh09.asp

 

[Scott Allen]

No Scott,
It's still in "Full"...Even though am getting the error.
Please help me.

Thanks.

What operating system? Is this a server you own or is it hosted?