execute stored procedures

I decided to used stored procedures in my last project (HR/Benefits/Payroll related web application). I wanted one procedure to execute all my stored procedures, no matter what the list of parameters:

using System;
using System.Data;
using System.Collections;
using System.Data.SqlClient;
using System.Data.OleDb;

  public DataSet returnAnyStoredProcOleDB(string spName, ArrayList myParams)
  {
   SqlDataAdapter da = new SqlDataAdapter();
   DataSet ds = new DataSet();
   string questionMarks = null;
   StringBuilder list = new StringBuilder();
   string testString = null;
   SqlConnection cn = new SqlConnection(connectionString);
   SqlCommand cmdSel = new SqlCommand(spName, cn);
   da.SelectCommand = cmdSel;
   cmdSel.CommandType = CommandType.StoredProcedure;
   try
   {
    cn.Open();
    if (myParams != null)
    {
     foreach(dbcParams q in myParams)
     {
      list.Append("?,");
      cmdSel.Parameters.Add("@" + q.ParamName, q.ParamValue);
      testString = testString + " " + "ParamName=" + q.ParamName + " ParamVal=" + q.ParamValue.ToString();
     }
     list.Length -= 1;  //remove trailing comma
     questionMarks = list.ToString();
    }
    da.Fill(ds);
    cn.Close();
    bool returnLog = false;
    returnLog = ErrorLog.ErrorRoutine(false, " params = > " + testString);
    cn.Dispose();
    
   }
   catch (Exception e)//yeah, I know, lazy...this is just an example
   {
    bool returnLog = false;  //logging code I'll post about in the future
    returnLog = ErrorLog.ErrorRoutine(false, e, e.ToString() + spName + " " + "=spName, params = > " + testString);
    errorMessage = e.ToString();
   
   } 
   return ds;
  }