Beispiel #1
0
        /// <summary>Closes the reader.</summary>
        public void Close()
        {
            if (CloseBaseStream)
            {
                reader?.Close();
            }

            reader = null;
        }
        private void learnFormAssetFile(string path)
        {
            FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
            DataReader dr = new DataReader(fs);
            int version = AssetToolUtility.GetAssetsFileVersion(path);
            var serializeAssets = SerializeAssetFactory.CreateWithVersion(version);
            serializeAssets.DeSerialize(dr);
            var assetTypeTreeDB = AssetToolUtility.GenerateTypeTreeDataBase(serializeAssets);
            typeTreeDatabase = assetTypeTreeDB.Merage(typeTreeDatabase);
            dr.Close();
            fs.Dispose();

        }
Beispiel #3
0
 public void CloseReader()
 {
     DataReader?.Close();
 }
        public override bool ParseBytesAndExecute(byte[] data)
        {
            DataStream ds   = new DataStream(data);
            DataReader dr   = new DataReader(ds);
            long       PEID = dr.ReadLong();
            byte       type = dr.ReadByte();
            Entity     e    = TheClient.TheRegion.GetEntity(PEID);

            if (type == 0)
            {
                if (e is PlayerEntity)
                {
                    ((PlayerEntity)e).InVehicle = true;
                    int          drivecount = dr.ReadInt();
                    int          steercount = dr.ReadInt();
                    PlayerEntity player     = (PlayerEntity)e;
                    player.DrivingMotors.Clear();
                    player.SteeringMotors.Clear();
                    for (int i = 0; i < drivecount; i++)
                    {
                        long jid = dr.ReadLong();
                        JointVehicleMotor jvm = (JointVehicleMotor)TheClient.TheRegion.GetJoint(jid);
                        if (jvm == null)
                        {
                            dr.Close();
                            return(false);
                        }
                        player.DrivingMotors.Add(jvm);
                    }
                    for (int i = 0; i < steercount; i++)
                    {
                        long jid = dr.ReadLong();
                        JointVehicleMotor jvm = (JointVehicleMotor)TheClient.TheRegion.GetJoint(jid);
                        if (jvm == null)
                        {
                            dr.Close();
                            return(false);
                        }
                        player.SteeringMotors.Add(jvm);
                    }
                    dr.Close();
                    return(true);
                }
                // TODO: other CharacterEntity's
            }
            else if (type == 1)
            {
                if (e is PlayerEntity)
                {
                    long   heloid = dr.ReadLong();
                    Entity helo   = TheClient.TheRegion.GetEntity(heloid);
                    if (!(helo is ModelEntity))
                    {
                        dr.Close();
                        return(false);
                    }
                    ((PlayerEntity)e).InVehicle = true;
                    ((PlayerEntity)e).Vehicle   = helo;
                    ModelEntity helomod = (ModelEntity)helo;
                    helomod.TurnIntoHelicopter((PlayerEntity)e);
                    dr.Close();
                    return(true);
                }
                // TODO: other CharacterEntity's
                dr.Close();
                return(true);
            }
            else if (type == 2)
            {
                if (e is PlayerEntity)
                {
                    long   planeid = dr.ReadLong();
                    Entity plane   = TheClient.TheRegion.GetEntity(planeid);
                    if (!(plane is ModelEntity))
                    {
                        dr.Close();
                        return(false);
                    }
                    ((PlayerEntity)e).InVehicle = true;
                    ((PlayerEntity)e).Vehicle   = plane;
                    ModelEntity planemod = (ModelEntity)plane;
                    planemod.TurnIntoPlane((PlayerEntity)e);
                    dr.Close();
                    return(true);
                }
                // TODO: other CharacterEntity's
                dr.Close();
                return(true);
            }
            dr.Close();
            return(false);
        }
 /// <summary>
 /// 关闭读取器。
 /// </summary>
 public override void Close()
 {
     DataReader?.Close();
 }
Beispiel #6
0
        public void DoAssetRollup()
        {
            // Loop through each asset and fill the ASSET_SECTION_<network_id> table according to the rollup logic.
            AssetRollupMessaging.AddMessge("Begin asset rollup in network: " + m_networkID + " at " + DateTime.Now.ToString("HH:mm:ss"));
            String       query = "";
            StreamWriter tw    = null;

            if (DBOp.IsTableInDatabase("ASSET_SECTION_" + m_networkID))
            {
                // Drop the table as we are going to make a new one.
                try
                {
                    DBMgr.ExecuteNonQuery("DROP TABLE ASSET_SECTION_" + m_networkID);
                }
                catch (Exception exc)
                {
                    throw exc;
                }
            }

            // Creating the ASSET_SECTION_<networkID> table.
            AssetRollupMessaging.AddMessge("Creating ASSET_SECTION table...");
            List <DatabaseManager.TableParameters> listColumn = new List <DatabaseManager.TableParameters>();

            listColumn.Add(new DatabaseManager.TableParameters("GEO_ID", DataType.Int, false, false));
            listColumn.Add(new DatabaseManager.TableParameters("SECTIONID", DataType.Int, false, false));
            listColumn.Add(new DatabaseManager.TableParameters("ASSET_TYPE", DataType.VarChar(-1), false));
            listColumn.Add(new DatabaseManager.TableParameters("FACILITY", DataType.VarChar(-1), false));
            listColumn.Add(new DatabaseManager.TableParameters("BEGIN_STATION", DataType.Float, true));
            listColumn.Add(new DatabaseManager.TableParameters("END_STATION", DataType.Float, true));
            listColumn.Add(new DatabaseManager.TableParameters("DIRECTION", DataType.VarChar(50), true));
            listColumn.Add(new DatabaseManager.TableParameters("SECTION", DataType.VarChar(-1), true));
            listColumn.Add(new DatabaseManager.TableParameters("AREA", DataType.Float, true));
            listColumn.Add(new DatabaseManager.TableParameters("UNITS", DataType.VarChar(50), true));

            String strTable = "ASSET_SECTION_" + m_networkID;

            try
            {
                DBMgr.CreateTable(strTable, listColumn);
            }
            catch (Exception exc)
            {
                throw exc;
            }

            // Get a text writer and file ready to do a bulk copy.
            String strMyDocumentsFolder = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

            strMyDocumentsFolder += "\\RoadCare Projects\\Temp";
            Directory.CreateDirectory(strMyDocumentsFolder);

            // LRS, Get the LRS data from each asset table...
            foreach (String assetName in m_assetNames)
            {
                AssetRollupMessaging.AddMessge("Rolling up LRS based asset " + assetName + "...");
                ConnectionParameters cp = DBMgr.GetAssetConnectionObject(assetName);
                List <String>        assetColumnNames = DBMgr.GetTableColumns(assetName, cp);
                if (assetColumnNames.Contains("BEGIN_STATION"))
                {
                    switch (cp.Provider)
                    {
                    case "MSSQL":
                        query = "SELECT GEO_ID, FACILITY, DIRECTION, BEGIN_STATION, END_STATION FROM " + assetName + " WHERE (FACILITY <> '' AND FACILITY IS NOT NULL) ORDER BY FACILITY, DIRECTION, BEGIN_STATION";
                        break;

                    case "ORACLE":
                        query = "SELECT GEO_ID, FACILITY, DIRECTION, BEGIN_STATION, END_STATION FROM " + assetName + " WHERE (FACILITY LIKE '_%' AND FACILITY IS NOT NULL) ORDER BY FACILITY, DIRECTION, BEGIN_STATION";
                        break;

                    default:
                        throw new NotImplementedException("TODO: Create ANSI implementation for XXXXXXXXXXXX");
                        //break;
                    }
                    String strOutFile = strMyDocumentsFolder + "\\" + assetName + ".txt";
                    tw = new StreamWriter(strOutFile);
                    DataSet    sectionSet;
                    DataReader assetReader;
                    try
                    {
                        // Get the Segmented network data from the SECTION_<networkID> table.
                        // sectionSet will hold the section data, and assetReader will loop through each asset.
                        sectionSet  = DBMgr.ExecuteQuery("SELECT SECTIONID, FACILITY, BEGIN_STATION, END_STATION, DIRECTION FROM SECTION_" + m_networkID + " WHERE BEGIN_STATION IS NOT NULL ORDER BY FACILITY, DIRECTION, BEGIN_STATION");
                        assetReader = new DataReader(query, cp);
                    }
                    catch (Exception exc)
                    {
                        throw exc;
                    }

                    // If there is data to read, start reading it.
                    if (assetReader.Read())
                    {
                        DataPoint assetInfo;
                        DataRow   sectionRow;
                        DataPoint sectionInfo;

                        bool bMoreData = true;

                        int iCurrentSection = 0;

                        // bMoreData is true while there is more data to read, and false when the dataReader is finished.
                        // we then go back to the foreach loop (outside the while) and start rolling up the next asset.
                        while (bMoreData)
                        {
                            // AssetInfo is going to hold this particular row of asset data.
                            assetInfo = new DataPoint(-1, (int)assetReader["GEO_ID"], assetReader["FACILITY"].ToString(), assetReader["BEGIN_STATION"].ToString(), assetReader["END_STATION"].ToString(), assetReader["DIRECTION"].ToString());

                            // SectionInfo is going to hold this particular row of sections data.
                            sectionRow  = sectionSet.Tables[0].Rows[iCurrentSection];
                            sectionInfo = new DataPoint((int)sectionRow["SECTIONID"], sectionRow["FACILITY"].ToString(), sectionRow["BEGIN_STATION"].ToString(), sectionRow["END_STATION"].ToString(), sectionRow["DIRECTION"].ToString());

                            // We increment the section if
                            // We increment the asset if
                            // AssetInSection returns:
                            // -1 increments asset
                            // 0 adds asset to Asset Rollup Table
                            // 1 increments section
                            bool bIncrementSection      = false;
                            bool bIncrementAsset        = false;
                            int  assetSectionComparison = AssetInSection(assetInfo, sectionInfo);

                            // Based on the result from AssetInSection we are going to increment something.  Here its the asset
                            if (assetSectionComparison < 0)
                            {
                                bIncrementAsset = true;
                            }
                            // Here, we have a match and we need to look ahead to see how many sections a linear asset might belong to
                            // before moving on to the next asset.  In either case, point or linear, we add the asset to the Rollup table.
                            else if (assetSectionComparison == 0)
                            {
                                AddAssetToRollupTable(assetInfo, sectionInfo, assetName, tw);
                                if (assetInfo.m_ptsExtent.Y != -1)                                      //don't bother with looking ahead if we're using point assets
                                {
                                    // Keep looping through the sections and checking to see if this asset is still valid for each
                                    // consecutive section.  When it fails on a section, we are done with the linear asset, otherwise
                                    // we add the asset to the new section. (This is why we needed the sections in a DataSet, as a
                                    // dataReader would not allow this type of operation...easily).
                                    for (int iSectionLookAhead = 1; iSectionLookAhead + iCurrentSection < sectionSet.Tables[0].Rows.Count; iSectionLookAhead++)
                                    {
                                        sectionRow  = sectionSet.Tables[0].Rows[iCurrentSection + iSectionLookAhead];
                                        sectionInfo = new DataPoint((int)sectionRow["SECTIONID"], sectionRow["FACILITY"].ToString(), sectionRow["BEGIN_STATION"].ToString(), sectionRow["END_STATION"].ToString(), sectionRow["DIRECTION"].ToString());
                                        if (AssetInSection(assetInfo, sectionInfo) == 0)
                                        {
                                            AddAssetToRollupTable(assetInfo, sectionInfo, assetName, tw);
                                        }
                                        else
                                        {
                                            break;
                                        }
                                    }
                                }
                                // Point asset match...we assigned the section already so just tell the loop to move to the next asset.
                                bIncrementAsset = true;
                            }
                            // AssetInSection returned non-zero, and was not negative.  Which is a long way of saying, it returned positive.
                            // so we need to increment the section on a positive result.
                            else
                            {
                                bIncrementSection = true;
                            }
                            if (bIncrementAsset)
                            {
                                if (bIncrementSection)
                                {
                                    // This can't happen logically, but was useful during debugging.
                                    throw new Exception();
                                }
                                else
                                {
                                    // Read in the new data if we are incrementing the asset
                                    bMoreData = assetReader.Read();
                                }
                            }
                            else
                            {
                                // Increment the section row in the section data set. (Assuming there are sections remaining)
                                // If there arent any sections remaining, then we can't assign any more assets can we?
                                // so that means we are done.
                                if (bIncrementSection)
                                {
                                    if (iCurrentSection + 1 < sectionSet.Tables[0].Rows.Count)
                                    {
                                        iCurrentSection++;
                                        bMoreData = true;
                                    }
                                    else
                                    {
                                        bMoreData = false;
                                    }
                                }
                                else
                                {
                                    // Again, impossible, but useful for debugging.
                                    throw new Exception();
                                }
                            }
                        }
                    }
                    tw.Close();
                    assetReader.Close();


                    AssetRollupMessaging.AddMessge("Bulk loading rolled up LRS asset data...");
                    // Now try to load all that beautifully segmented data into an Asset Rollup table. (tab delimited).
                    try
                    {
                        switch (DBMgr.NativeConnectionParameters.Provider)
                        {
                        case "MSSQL":
                            DBMgr.SQLBulkLoad("ASSET_SECTION_" + m_networkID, strOutFile, '\t');
                            break;

                        case "ORACLE":
                            throw new NotImplementedException("TODO: Figure out tables for DoAssetRollup()");

                        //DBMgr.OracleBulkLoad( DBMgr.NativeConnectionParameters, "ASSET_SECTION_" + m_networkID, strOutFile,
                        //break;
                        default:
                            throw new NotImplementedException("TODO: Create ANSI implementation for XXXXXXXXXXXX");
                            //break;
                        }
                    }
                    catch (Exception exc)
                    {
                        throw exc;
                    }
                }
            }

            AssetRollupMessaging.AddMessge("Finished LRS asset data rollup...");

            //foreach (String assetName in m_assetNames)
            //{
            //    AssetRollupMessaging.AddMessge("Rolling up SRS asset " + assetName + "...");
            //    ConnectionParameters cp = DBMgr.GetAssetConnectionObject(assetName);
            //    List<String> assetColumnNames = DBMgr.GetTableColumns(assetName, cp);
            //    if (assetColumnNames.Contains("SECTION"))
            //    {
            //        query = "SELECT GEO_ID, FACILITY, SECTION FROM " + assetName + " WHERE (SECTION <> '' AND SECTION IS NOT NULL) ORDER BY FACILITY, SECTION";
            //        String strOutFile = strMyDocumentsFolder + "\\" + assetName + ".txt";
            //        tw = new StreamWriter(strOutFile);
            //        DataReader sectionReader = null;
            //        DataReader assetReader = null;
            //        try
            //        {
            //            // Get the Segmented network data from the SECTION_<networkID> table.
            //            // sectionSet will hold the section data, and assetReader will loop through each asset.
            //            //sectionSet = DBMgr.ExecuteQuery("SELECT SECTIONID, FACILITY, SECTION SECTION_" + m_networkID + " WHERE SECTION IS NOT NULL ORDER BY FACILITY, SECTION");
            //            sectionReader = new DataReader("SELECT SECTIONID, FACILITY, SECTION FROM SECTION_" + m_networkID + " WHERE SECTION IS NOT NULL ORDER BY FACILITY, SECTION");
            //            assetReader = new DataReader(query, cp);
            //        }
            //        catch (Exception exc)
            //        {
            //            throw exc;
            //        }

            //        bool bContinue = true;
            //        String strFacility = "";
            //        String strSection = "";
            //        String strSectionID = "";
            //        String strAssetFacility = "";
            //        String strAssetSection = "";
            //        String strGeoID = "";



            //        while (bContinue)
            //        {
            //            if (strFacility == "")
            //            {
            //                if (!sectionReader.Read())
            //                {
            //                    bContinue = false;
            //                    continue;
            //                }
            //                strFacility = sectionReader["FACILITY"].ToString();
            //                strSection = sectionReader["SECTION"].ToString();
            //                strSectionID = sectionReader["SECTIONID"].ToString();
            //                //if (strSectionID == "1006136")
            //                //{ }
            //                //strFacility = strFacility.Replace(" ", "");
            //                //strSection = strSection.Replace(" ", "");

            //            }

            //            if (strAssetFacility == "")
            //            {
            //                if (!assetReader.Read())
            //                {
            //                    bContinue = false;
            //                    continue;
            //                }
            //                strAssetFacility = assetReader["FACILITY"].ToString();
            //                strAssetSection = assetReader["SECTION"].ToString();
            //                strGeoID = assetReader["GEO_ID"].ToString();
            //                //if (strAssetFacility == "NW - Connecticut Ave")
            //                //{ }

            //                //strAssetFacility = strAssetFacility.Replace(" ", "");
            //                //strAssetSection = strAssetSection.Replace(" ", "");
            //            }
            //            if (CompareInfo.GetCompareInfo("en-US").Compare(strFacility, strAssetFacility) < 0)
            //            {
            //                strFacility = "";
            //            }
            //            else if (CompareInfo.GetCompareInfo("en-US").Compare(strFacility, strAssetFacility) == 0)
            //            {
            //                if (CompareInfo.GetCompareInfo("en-US").Compare(strSection, strAssetSection) < 0)
            //                {
            //                    strFacility = "";
            //                }
            //                else if (CompareInfo.GetCompareInfo("en-US").Compare(strSection, strAssetSection) == 0)
            //                {
            //                    //Write out to file
            //                    tw.WriteLine(strGeoID
            //                    + "\t" + strSectionID
            //                    + "\t" + assetName
            //                    + "\t" + sectionReader["FACILITY"].ToString()
            //                    + "\t" //+ a.m_ptsExtent.X.ToString()
            //                    + "\t" //+ ((a.m_ptsExtent.Y == -1) ? "" : a.m_ptsExtent.Y.ToString())
            //                    + "\t" //+ a.m_strDirection
            //                    + "\t" + sectionReader["SECTION"].ToString()
            //                    + "\t" //+ a.m_strArea
            //                    + "\t"); //+ a.m_strUnit);
            //                    strAssetFacility = "";
            //                }
            //                else
            //                {
            //                    strAssetFacility = "";
            //                }
            //            }
            //            else
            //            {
            //                strAssetFacility = "";
            //            }

            //        }
            //        tw.Close();
            //        assetReader.Close();
            //        sectionReader.Close();

            //        AssetRollupMessaging.AddMessge("Bulk loading rolled up SRS asset data...");
            //        // Now try to load all that beautifully segmented data into an Asset Rollup table. (tab delimited).
            //        try
            //        {
            //            switch (cp.Provider)
            //            {
            //                case "MSSQL":
            //                    //query = "SELECT GEO_ID, FACILITY, SECTION FROM " + assetName + " WHERE (SECTION <> '' AND SECTION IS NOT NULL) ORDER BY FACILITY, SECTION";
            //                    DBMgr.SQLBulkLoad("ASSET_SECTION_" + m_networkID, strOutFile, '\t');
            //                    break;
            //                case "ORACLE":
            //                    query = "SELECT GEO_ID, FACILITY, SECTION FROM " + assetName + " WHERE (SECTION LIKE '_%' AND SECTION IS NOT NULL) ORDER BY FACILITY, SECTION";
            //                    break;
            //                default:
            //                    throw new NotImplementedException("TODO: Create ANSI implementation for XXXXXXXXXXXX");
            //                    break;
            //            }
            //        }
            //        catch (Exception exc)
            //        {
            //            throw exc;
            //        }
            //    }
            //}
            AssetRollupMessaging.AddMessge("Asset Rollup complete.");
        }
Beispiel #7
0
        //[Variation("Simple positive test 1", Pri = 0, Params = new object[] { "NNS" })]
        //[Variation("Simple positive test 2", Pri = 0, Params = new object[] { "DNS" })]
        //[Variation("Simple positive test 3", Pri = 0, Params = new object[] { "NS" })]
        public int v()
        {
            string type = CurVariation.Params[0].ToString();

            CError.WriteLine("Test Type : " + type);

            ReloadSource(new StringReader(_xmlStr));
            DataReader.PositionOnElement("root");

            switch (type)
            {
            case "NNS":
                DataReader.ReadToDescendant("elem");
                DataReader.ReadToNextSibling("elem");

                if (DataReader.HasAttributes)
                {
                    CError.Compare(DataReader.GetAttribute("att"), "1", "Not the expected attribute");
                }
                else
                {
                    CError.WriteLine("Positioned on wrong element");
                    DumpStat();
                    return(TEST_FAIL);
                }
                while (DataReader.Read())
                {
                    ;
                }
                DataReader.Close();
                return(TEST_PASS);

            case "DNS":
                DataReader.ReadToDescendant("elem", "elem");
                DataReader.ReadToNextSibling("elem", "elem");
                if (DataReader.HasAttributes)
                {
                    if (DataReader.GetAttribute("att") == null)
                    {
                        CError.WriteLine("Positioned on wrong element, not on DNS");
                        return(TEST_FAIL);
                    }
                }
                else
                {
                    CError.WriteLine("Positioned on wrong element");
                    DumpStat();
                    return(TEST_FAIL);
                }
                while (DataReader.Read())
                {
                    ;
                }
                DataReader.Close();
                return(TEST_PASS);

            case "NS":
                DataReader.ReadToDescendant("e:elem");
                DataReader.ReadToNextSibling("e:elem");

                if (DataReader.HasAttributes)
                {
                    if (DataReader.GetAttribute("xmlns:e") == null)
                    {
                        CError.WriteLine("Positioned on wrong element, not on DNS");
                        return(TEST_FAIL);
                    }
                }
                else
                {
                    CError.WriteLine("Positioned on wrong element");
                    DumpStat();
                    return(TEST_FAIL);
                }

                while (DataReader.Read())
                {
                    ;
                }
                DataReader.Close();
                return(TEST_PASS);

            default:
                throw new CTestFailedException("Error in Test type");
            }
        }
Beispiel #8
0
        //[Variation("Read to next sibling with same names 1", Pri = 1, Params = new object[] { "NNS", "<root><a att='1'/><a att='2'/><a att='3'/></root>" })]
        //[Variation("Read on next sibling with same names 2", Pri = 1, Params = new object[] { "DNS", "<root xmlns='a'><a att='1'/><a att='2'/><a att='3'/></root>" })]
        //[Variation("Read on next sibling with same names 3", Pri = 1, Params = new object[] { "NS", "<root xmlns:a='a'><a:a att='1'/><a:a att='2'/><a:a att='3'/></root>" })]
        public int v3()
        {
            string type = CurVariation.Params[0].ToString();
            string xml  = CurVariation.Params[1].ToString();

            CError.WriteLine("Test Type : " + type);

            ReloadSource(new StringReader(xml));
            DataReader.Read();
            if (IsBinaryReader())
            {
                DataReader.Read();
            }

            //Doing a sequential read.
            switch (type)
            {
            case "NNS":
                DataReader.ReadToDescendant("a");
                DataReader.ReadToNextSibling("a");
                DataReader.ReadToNextSibling("a");
                CError.Compare(DataReader.GetAttribute("att"), "3", "Wrong node");

                while (DataReader.Read())
                {
                    ;
                }
                DataReader.Close();

                return(TEST_PASS);

            case "DNS":
                DataReader.ReadToDescendant("a", "a");
                DataReader.ReadToNextSibling("a", "a");
                DataReader.ReadToNextSibling("a", "a");
                CError.Compare(DataReader.GetAttribute("att"), "3", "Wrong node");

                while (DataReader.Read())
                {
                    ;
                }
                DataReader.Close();

                return(TEST_PASS);

            case "NS":
                DataReader.ReadToDescendant("a:a");
                DataReader.ReadToNextSibling("a:a");
                DataReader.ReadToNextSibling("a:a");
                CError.Compare(DataReader.GetAttribute("att"), "3", "Wrong node");

                while (DataReader.Read())
                {
                    ;
                }
                DataReader.Close();

                return(TEST_PASS);

            default:
                throw new CTestFailedException("Error in Test type");
            }
        }
Beispiel #9
0
 /// <summary>Closes this instance.</summary>
 public void Close()
 {
     m_Reader.Close();
     m_Reader = null;
 }
Beispiel #10
0
        public static List <SqlColumn> GetSqlColumns(string sql, IList parameters)
        {
            List <SqlColumn> cols = new List <SqlColumn>();

            Connection connection = new Connection(@"Data Source=U:\Documentacoes_Equipe_ERP\OpenPOS\database\openpos.db;Version=3;");

            connection.Open();
            Tables tables = Tables.GetTables(connection);

            if (tables.Contains(sql))
            {
                cols = new List <SqlColumn>(from c in tables[sql].Fields
                                            select new SqlColumn
                {
                    Name     = c.Name,
                    DataType = c.GetFieldType()
                });
            }
            else
            {
                Command    cmSQL      = null;
                DataReader dr         = null;
                Cursor     saveCursor = Cursor.Current;
                Cursor.Current = Cursors.WaitCursor;
                try
                {
                    cmSQL             = connection.CreateCommand();
                    cmSQL.CommandText = sql;
                    AddParameters(cmSQL, parameters);
                    dr = cmSQL.ExecuteReader(CommandBehavior.SchemaOnly);
                    for (int i = 0; i < dr.FieldCount; i++)
                    {
                        SqlColumn sc = new SqlColumn();
                        sc.Name     = dr.GetName(i).TrimEnd('\0');
                        sc.DataType = dr.GetFieldType(i);
                        cols.Add(sc);
                    }
                }
                catch (SqlException sqle)
                {
                    MessageBox.Show(sqle.Message, Strings.DesignerUtility_Show_SQLError);
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.InnerException == null ? e.Message : e.InnerException.Message, Strings.DesignerUtility_Show_Error);
                }
                finally
                {
                    if (connection != null)
                    {
                        if (cmSQL != null)
                        {
                            cmSQL.Dispose();
                            if (dr != null)
                            {
                                dr.Close();
                            }
                        }
                        connection.Close();
                        connection.Dispose();
                    }
                    Cursor.Current = saveCursor;
                }
            }
            return(cols);
        }