ASP.NET C＃数据库连接不起作用

Question

I have this connection string in my web.config :

<connectionStrings>
    <add name="SQLServerConnectionString"
         connectionString= "..."
         providerName="System.Data.SqlClient" />
</connectionStrings>

And this simple C# code to pull from the db:

dbAD.SelectCommand = new OleDbCommand("SELECT * FROM Profile ORDER BY FullName ASC", dbConnect);
dbAD.Fill(dbRS, "Profile");

if (dbRS.Tables("Profile").Rows.Count > 0)
{
    foreach (DataRow employee in dbRS.Tables("Profile").Rows)
    {
        Response.Write("Employee: " + Profile("FullName") + " " + Profile("Academy") + "<p>");
    }
}

However, I get an error:

The name 'dbAD' does not exist in the current context

I take it I need to define dbAD , or a few other variables before hand, but I'd only be guessing.

Thanks in advance!

Answer 1

try this code:

i up:

        using System.Data;
        using System.Data.OleDb;
        using System.Web.Configuration;



        OleDbConnection oledbCnn=null;
        OleDbDataAdapter oledbAdapter = null;
        DataSet ds=null;

        string connetionString = WebConfigurationManager.ConnectionStrings["SQLServerConnectionString"].ConnectionString;
        string sql = "SELECT * FROM Profile ORDER BY FullName ASC";


        try
        {
            oledbCnn = new OleDbConnection(connetionString);
            oledbCnn.Open();

            oledbAdapter = new OleDbDataAdapter(sql, oledbCnn);

            ds = new DataSet();
            oledbAdapter.Fill(ds, "Profile");

            foreach (DataRow row in ds.Tables["Profile"].Rows)
            {
                Response.Write("Employee: " + " " + row["FullName"].ToString() + " " + row["Academy"].ToString() + "<p>");
            }

            oledbCnn.Close();
        }
        catch (Exception ex)
        {
            Response.Write("Can not open connection ! ");
        }
        finally
        {
            if (oledbCnn != null) oledbCnn.Dispose();
            if (oledbAdapter != null) oledbAdapter.Dispose();
            if (ds != null) ds.Dispose();
        }