Security exception while opening an OleDBConnection

C

CyberLotus

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
 
H

Henning Krause [MVP]

Hello,

under .NET 1.1, the OleDBProvider needs fulltrust.
This has been resolved under .NET 2.0

Greetings,
Henning Krause

CyberLotus said:
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
Click to expand...
 
C

CyberLotus

Hi,
I've checked in machine.config, it's still in "Full"...Even though am
getting the error.
Please help me.

Thanks.

Henning Krause said:
Hello,

under .NET 1.1, the OleDBProvider needs fulltrust.
This has been resolved under .NET 2.0

Greetings,
Henning Krause

CyberLotus said:
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
Click to expand...
Click to expand...
 
P

Patrick.O.Ige

CyberLotus have you given it the right permissions?
there are some issues with MS Access database too with asp.net ver 1.1
Try looking at my blog here at :- http://spaces.msn.com/naijacoder
and i posted a similar solution for MS access database.
Hope that Helps
Patrick



CyberLotus said:
Hi,
I've checked in machine.config, it's still in "Full"...Even though am
getting the error.
Please help me.

Thanks.

Henning Krause said:
Hello,

under .NET 1.1, the OleDBProvider needs fulltrust.
This has been resolved under .NET 2.0

Greetings,
Henning Krause

CyberLotus said:
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
Click to expand...
Click to expand...
Click to expand...
 

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