问将SQL代码导入到Access 2007

EN

protected void btnProcess_Click(object sender, EventArgs e)
{
    //Open the connections to the access and SQL databases
    string sqlDBCnn = @"Data Source=.\SQLEXPRESS;Integrated Security=True;AttachDBFileName=|DataDirectory|\mydb.mdf;user instance=true";
    string accessDBCnn = @"Provider=Microsoft.Jet.OleDB.4.0;Data Source=C:\mydb.mdb";

    OleDbConnection cnnAcc = new OleDbConnection(accessDBCnn);
    cnnAcc.Open();

    SqlConnection cnnSql = new SqlConnection(sqlDBCnn);
    cnnSql.Open();

    SqlCommand cmSql = new SqlCommand("DELETE tablename", cnnSql);
    cmSql.ExecuteNonQuery();

    //Retrieve the data from the Access Database
    OleDbCommand cmdAcc = new OleDbCommand("SELECT * FROM tablename", cnnAcc);
    OleDbDataReader drAcc = cmdAcc.ExecuteReader();

    using (drAcc)
    {
        if (drAcc.HasRows)
        {
            //Loop through the access database records and add them to the database
            while (drAcc.Read())
            {
                SqlCommand cmdSql = new SqlCommand("INSERT INTO tablename(Category, Head, Val) VALUES(@cat,@head,@val)",cnnSql);

                SqlParameter parCat = new SqlParameter("cat",System.Data.SqlDbType.VarChar,150);
                SqlParameter parHead = new SqlParameter("head",System.Data.SqlDbType.VarChar,150);
                SqlParameter parVal = new SqlParameter("val",System.Data.SqlDbType.VarChar);
                parCat.Value = drAcc["Category"].ToString();
                parHead.Value = drAcc["Head"].ToString();
                parVal.Value = drAcc["Val"].ToString();
                cmdSql.Parameters.Add(parCat);
                cmdSql.Parameters.Add(parHead);
                cmdSql.Parameters.Add(parVal);

                cmdSql.ExecuteNonQuery();
            }
        }
    }

    lblMsg.Text = "<p /> All Done Kapitone!";

}