I'm developing an intranet site in ASP.NET 2.0 but I can't seem to
connect to the DB from within my code. I've created a .vb class that
houses a private Connection() that other functions within the class can
call to connect to the database. In the calling function, I've declared
my connection object and called the "Open" method on the object.
However, when I attempt to execute the stored procedure command by
calling the "ExecuteScalar" method, I get the following error:
"ExecuteScalar requires an open and available Connection. The
connection's current state is closed."
Here's the code from my class:
Imports System.Data
Imports System.Data.SqlClient
Namespace Encompass
Public Class EncompassSecurity
Public Shared Function GetHRIDByNTUserID(ByVal strNTUserID) As String
Dim strHRID As String
'Create command object
Dim cmd As New SqlCommand("usp_Get_HRID_By_NTUserID", Connection())
cmd.CommandType = CommandType.StoredProcedure
'Open DB connection
Dim DBConnection As SqlConnection = Connection()
DBConnection.Open()
'Input parameters
Dim inNTUserParam As New SqlParameter("@dotnet.itags.org.NT_UserID", SqlDbType.VarChar)
inNTUserParam.Direction = ParameterDirection.Input
inNTUserParam.Value = strNTUserID
cmd.Parameters.Add(inNTUserParam)
'Output parameters
Dim outHRIDParam As New SqlParameter("@dotnet.itags.org.HRID", SqlDbType.Int)
outHRIDParam.Direction = ParameterDirection.Output
cmd.Parameters.Add(outHRIDParam)
'Run stored procedure
strHRID = cmd.ExecuteScalar()
Return (strHRID)
'Close DB connection
DBConnection.Close()
End Function
Private Shared Function Connection() As SqlConnection
Dim strConnectionString As String
strConnectionString = ConfigurationManager.ConnectionStrings(
"Conn").ConnectionString
Return New SqlConnection(strConnectionString)
End Function
End Class
End
Namespace
Here's the code from my web.config file:
<?
xml version="1.0"?>
<!--
Note: As an alternative to hand editing this file you can use the
web admin tool to configure settings for your application. Use
the Website->Asp.Net Configuration option in Visual Studio.
A full list of settings and comments can be found in
machine.config.comments usually located in
\Windows\Microsoft.Net\Framework\v2.x\Config
-->
<
configuration
xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<
connectionStrings>
<
add name="Conn" connectionString="Data Source=ServerName;Initial
Catalog=NPASDV;uid=UserName;password=***
****;"
providerName="System.Data.SqlClient" />
</
connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
Visual Basic options:
Set strict="true" to disallow all data type conversions
where data loss can occur.
Set explicit="true" to force declaration of all variables.
-->
<
roleManager defaultProvider="AspNetWindowsTokenRoleProvider" />
<
compilation debug="true" strict="false" explicit="true" />
<
pages>
<
namespaces>
<
clear />
<
add namespace="System" />
<
add namespace="System.Collections" />
<
add namespace="System.Collections.Specialized" />
<
add namespace="System.Configuration" />
<
add namespace="System.Text" />
<
add namespace="System.Text.RegularExpressions" />
<
add namespace="System.Web" />
<
add namespace="System.Web.Caching" />
<
add namespace="System.Web.SessionState" />
<
add namespace="System.Web.Security" />
<
add namespace="System.Web.Profile" />
<
add namespace="System.Web.UI" />
<
add namespace="System.Web.UI.WebControls" />
<
add namespace="System.Web.UI.WebControls.WebParts" />
<
add namespace="System.Web.UI.HtmlControls" />
</
namespaces>
</
pages>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<
authentication mode="Windows" />
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
</
system.web>
</
configuration>
What am I doing wrong? Any help would be most appreciated!!
Manuel Garr, MCPYou have created a Commad object with a connection object which is not open
yet.
Dim DBConnection As SqlConnection = Connection()
DBConnection.Open()
Dim cmd As New SqlCommand("usp_Get_HRID_By_NTUserID", DBConnection)
cmd.CommandType = CommandType.StoredProcedure
"mlg1906" <mlg1906@.discussions.microsoft.com> wrote in message
news:86C67AB7-8F4E-42A4-B0C8-CB7FC7DE7CD6@.microsoft.com...
> I'm developing an intranet site in ASP.NET 2.0 but I can't seem to
> connect to the DB from within my code. I've created a .vb class that
> houses a private Connection() that other functions within the class can
> call to connect to the database. In the calling function, I've declared
> my connection object and called the "Open" method on the object.
> However, when I attempt to execute the stored procedure command by
> calling the "ExecuteScalar" method, I get the following error:
> "ExecuteScalar requires an open and available Connection. The
> connection's current state is closed."
>
> Here's the code from my class:
>
> Imports System.Data
> Imports System.Data.SqlClient
>
> Namespace Encompass
>
> Public Class EncompassSecurity
>
> Public Shared Function GetHRIDByNTUserID(ByVal strNTUserID) As String
>
> Dim strHRID As String
>
> 'Create command object
>
> Dim cmd As New SqlCommand("usp_Get_HRID_By_NTUserID", Connection())
> cmd.CommandType = CommandType.StoredProcedure
>
> 'Open DB connection
>
> Dim DBConnection As SqlConnection = Connection()
> DBConnection.Open()
>
> 'Input parameters
>
> Dim inNTUserParam As New SqlParameter("@.NT_UserID", SqlDbType.VarChar)
> inNTUserParam.Direction = ParameterDirection.Input
>
> inNTUserParam.Value = strNTUserID
>
> cmd.Parameters.Add(inNTUserParam)
>
> 'Output parameters
>
> Dim outHRIDParam As New SqlParameter("@.HRID", SqlDbType.Int)
> outHRIDParam.Direction = ParameterDirection.Output
>
> cmd.Parameters.Add(outHRIDParam)
>
> 'Run stored procedure
> strHRID = cmd.ExecuteScalar()
>
> Return (strHRID)
>
> 'Close DB connection
> DBConnection.Close()
>
> End Function
>
> Private Shared Function Connection() As SqlConnection
>
> Dim strConnectionString As String
> strConnectionString = ConfigurationManager.ConnectionStrings(
>
> "Conn").ConnectionString
>
> Return New SqlConnection(strConnectionString)
>
> End Function
>
> End Class
> End
>
> Namespace
> Here's the code from my web.config file:
>
> <?
>
> xml version="1.0"?>
> <!--
>
> Note: As an alternative to hand editing this file you can use the
>
> web admin tool to configure settings for your application. Use
>
> the Website->Asp.Net Configuration option in Visual Studio.
>
> A full list of settings and comments can be found in
>
> machine.config.comments usually located in
>
> \Windows\Microsoft.Net\Framework\v2.x\Config
>
> -->
>
> <
>
> configuration
> xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
> <
>
> connectionStrings>
> <
>
> add name="Conn" connectionString="Data Source=ServerName;Initial
> Catalog=NPASDV;uid=UserName;password=***
****;"
>
> providerName="System.Data.SqlClient" />
> </
>
> connectionStrings>
>
> <system.web>
> <!--
>
> Set compilation debug="true" to insert debugging
>
> symbols into the compiled page. Because this
>
> affects performance, set this value to true only
>
> during development.
>
> Visual Basic options:
>
> Set strict="true" to disallow all data type conversions
>
> where data loss can occur.
>
> Set explicit="true" to force declaration of all variables.
>
> -->
> <
>
> roleManager defaultProvider="AspNetWindowsTokenRoleProvider" />
> <
>
> compilation debug="true" strict="false" explicit="true" />
> <
>
> pages>
> <
>
> namespaces>
> <
>
> clear />
> <
>
> add namespace="System" />
> <
>
> add namespace="System.Collections" />
> <
>
> add namespace="System.Collections.Specialized" />
> <
>
> add namespace="System.Configuration" />
> <
>
> add namespace="System.Text" />
> <
>
> add namespace="System.Text.RegularExpressions" />
> <
>
> add namespace="System.Web" />
> <
>
> add namespace="System.Web.Caching" />
> <
>
> add namespace="System.Web.SessionState" />
> <
>
> add namespace="System.Web.Security" />
> <
>
> add namespace="System.Web.Profile" />
> <
>
> add namespace="System.Web.UI" />
> <
>
> add namespace="System.Web.UI.WebControls" />
> <
>
> add namespace="System.Web.UI.WebControls.WebParts" />
> <
>
> add namespace="System.Web.UI.HtmlControls" />
> </
>
> namespaces>
> </
>
> pages>
> <!--
>
> The <authentication> section enables configuration
>
> of the security authentication mode used by
>
> ASP.NET to identify an incoming user.
>
> -->
> <
>
> authentication mode="Windows" />
>
> <!--
>
> The <customErrors> section enables configuration
>
> of what to do if/when an unhandled error occurs
>
> during the execution of a request. Specifically,
>
> it enables developers to configure html error pages
>
> to be displayed in place of a error stack trace.
>
> <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
>
> <error statusCode="403" redirect="NoAccess.htm" />
>
> <error statusCode="404" redirect="FileNotFound.htm" />
>
> </customErrors>
>
> -->
> </
>
> system.web>
> </
>
> configuration>
> What am I doing wrong? Any help would be most appreciated!!
>
> --
> Manuel Garr, MCP
>
Winista wrote:
> You have created a Commad object with a connection object which is not ope
n
> yet.
> Dim DBConnection As SqlConnection = Connection()
> DBConnection.Open()
> Dim cmd As New SqlCommand("usp_Get_HRID_By_NTUserID", DBConnection)
> cmd.CommandType = CommandType.StoredProcedure
>
A command object can be created without the connection being opened.
However, your code is partially correct. The only thing that needs to
be changed is the call to DBConnection.Open() should be made right
before the cmd.ExecuteScalar() call.
> "mlg1906" <mlg1906@.discussions.microsoft.com> wrote in message
> news:86C67AB7-8F4E-42A4-B0C8-CB7FC7DE7CD6@.microsoft.com...
--
Manuel
"Winista" wrote:
> You have created a Commad object with a connection object which is not ope
n
> yet.
> Dim DBConnection As SqlConnection = Connection()
> DBConnection.Open()
> Dim cmd As New SqlCommand("usp_Get_HRID_By_NTUserID", DBConnection)
> cmd.CommandType = CommandType.StoredProcedure
> "mlg1906" <mlg1906@.discussions.microsoft.com> wrote in message
> news:86C67AB7-8F4E-42A4-B0C8-CB7FC7DE7CD6@.microsoft.com...
Thanks for you help too!
--
Manuel
"tdavisjr" wrote:
> Winista wrote:
>
> A command object can be created without the connection being opened.
> However, your code is partially correct. The only thing that needs to
> be changed is the call to DBConnection.Open() should be made right
> before the cmd.ExecuteScalar() call.
>
>
>
Thanks so much for your help. It's working now.
--
Manuel
"Winista" wrote:
> You have created a Commad object with a connection object which is not ope
n
> yet.
> Dim DBConnection As SqlConnection = Connection()
> DBConnection.Open()
> Dim cmd As New SqlCommand("usp_Get_HRID_By_NTUserID", DBConnection)
> cmd.CommandType = CommandType.StoredProcedure
> "mlg1906" <mlg1906@.discussions.microsoft.com> wrote in message
> news:86C67AB7-8F4E-42A4-B0C8-CB7FC7DE7CD6@.microsoft.com...
