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database access(enterprisedb)

kanchuparthi.rams kanchuparthi.rams is offline
Junior Member
Join Date: May 2008
Posts: 2
I am using enterprisedb as my backend and VB dotnet 2003 is the frent end
while i accessing the database i got the error below

A system error has occurred. Please contact your System Administrator.

Click here to return to the previous screen.

System Message details:

Error Message: Object reference not set to an instance of an object.
Page URL: http://localhost/example/forms/login.aspx
Stack Trace:
at EnterpriseDB.EDBClient.EDBCommand.ExecuteReader(Co mmandBehavior cb)
at example.Framework.Data.OltpDatabases.DatabaseConne ctString(String DatabaseID) in C:\Inetpub\wwwroot\example\classes\example.Framewo rk.Data.vb:line 46
at example.Framework.Data.OltpEngine.get_ConnectStrin g(String DatabaseID) in C:\Inetpub\wwwroot\example\classes\example.Framewo rk.Data.vb:line 99
at example.Framework.Data.OltpEngine.GetDataCommand(S tring Sql, String DatabaseID) in C:\Inetpub\wwwroot\example\classes\example.Framewo rk.Data.vb:line 164
at example.Framework.Business.Operator.Login(String OperatorUserName, String OperatorUserPassword, Boolean& ExistsButNotActive) in C:\Inetpub\wwwroot\example\classes\example.Framewo rk.Business.Operator.vb:line 141
at example.Controls.ucLogin.btnSubmit_Click(Object sender, EventArgs e) in C:\Inetpub\wwwroot\example\controls\ucLogin.ascx.v b:line 57
at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
at System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData)
at System.Web.UI.Page.ProcessRequestMain()

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