Question

I am having issues accessing my ConnectionString in the web config.

Here is my web config.

<configuration>
 <appSettings/>
 <connectionStrings>
    <add name="UAFConnectionString" connectionString="Provider=SQLOLEDB;Data Source=INLISAP003;Password=5q1server2005;User ID=sa;Initial Catalog=UserAccessForm"
   providerName="System.Data.OleDb" />
</connectionStrings>

Here is my code for the button click,

Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration
Partial Class _Default

    Inherits System.Web.UI.Page
    Dim mySqlCon As SqlConnection
    Dim strConnection As String

    Sub OpenCon()
        strConnection = ConfigurationManager.ConnectionStrings("UAFConnectionString").ConnectionString
        mySqlCon = New SqlConnection(strConnection)
        mySqlCon.Open()
    End Sub

    Sub CloseCon()
        mySqlCon.Close()
        mySqlCon.Dispose()
    End Sub

OpenCon()
            Dim SQL As String = "SELECT * FROM tbl_UserAccount WHERE StafID='" & txtUsername.Text & "' AND Password='" & txtPassword.Text & "' "
            Dim DR As SqlDataReader
            Dim CMD As New SqlCommand(SQL, mySqlCon)
            DR = CMD.ExecuteReader(System.Data.CommandBehavior.CloseConnection)

            DR.Read()
            If DR.HasRows = False Then
                MsgBox("Invalid User name OR Password", MsgBoxStyle.Critical, "Login ERROR")
                txtUsername.Focus()
                Exit Sub
            End If

Here is my error message.

System.ArgumentException: Keyword not
supported: ‘provider’. at
System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable
parsetable, String connectionString,
Boolean buildChain, Hashtable
synonyms, Boolean firstKey) at
System.Data.Common.DbConnectionOptions..ctor(String
connectionString, Hashtable synonyms,
Boolean useOdbcRules) at
System.Data.SqlClient.SqlConnectionString..ctor(String
connectionString) at
System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String
connectionString, DbConnectionOptions
previous) at
System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(String
connectionString,
DbConnectionPoolGroupOptions
poolOptions, DbConnectionOptions&
userConnectionOptions) at
System.Data.SqlClient.SqlConnection.ConnectionString_Set(String
value) at
System.Data.SqlClient.SqlConnection.set_ConnectionString(String
value) at
System.Data.SqlClient.SqlConnection..ctor(String
connectionString) at
_Default.OpenCon() in D:\WEB-SITES\PROJECT002\Default.aspx.vb:line 12 at _Default.btnLogin_Click(Object
sender, EventArgs e) in
D:\WEB-SITES\PROJECT002\Default.aspx.vb:line 35

Answer 1

You are already using a specific provider : SLQConnection ! Adding a provider keywork in your connection string is unsupported when using a specific provider. The provider keyword is needed when you use the generic OleDbConnection to let ADO.NET knows which provider to use.

Remove the provider key and its value from your connection string and all should be fine. Or user a OleDbConnection.