silverlight tsql spatial insert wcf reports no error but does not insert

silverlight tsql spatial insert wcf reports no error but does not insert

this insert works correctly:

        string WKT = "LINESTRING (" + POINTS[0].Longitude.ToString(CultureInfo.InvariantCulture)             + " " + POINTS[0].Latitude.ToString(CultureInfo.InvariantCulture);         for (int i = 1; i < POINTS.Count; i++)         {             WKT += ", " + POINTS[i].Longitude.ToString(CultureInfo.InvariantCulture)             + " " + POINTS[i].Latitude.ToString(CultureInfo.InvariantCulture);         }         WKT += ")";          HydroWCF.HydrotamServisClient cli = new HydroWCF.HydrotamServisClient();         cli.ExecuteNonQueryCompleted += new EventHandler<HydroWCF.ExecuteNonQueryCompletedEventArgs>(cli_ExecuteNonQueryCompleted);          string q = "";         if (kaydetmeBicimi == "I")         {             q += " INSERT INTO [HydrotamDB].[dbo].[Kiyi]";             q += "        ([BolgePtr]";             q += "        ,[Ad]";             q += "        ,[Bilgi]";             q += "        ,[ZoomLevel])";             q += "  VALUES";             q += "        (" + bolgeList[cbBolge.SelectedIndex].BolgeID;             q += "        ,'" + kiyiAdi + "'";             q += "        ,'" + WKT + "'";             q += "        ," + viewMap.ZoomLevel + ")";         }         else         {             q += " UPDATE [HydrotamDB].[dbo].[Kiyi]";             q += "        SET [BolgePtr]= " + bolgeList[cbBolge.SelectedIndex].BolgeID;             q += "        ,[Ad] = '" + kiyiAdi + "'";             q += "        ,[Bilgi] = '" + WKT + "'";             q += "        ,[ZoomLevel]=" + +viewMap.ZoomLevel;             q += " WHERE ID = " + kiyiList[cbKiyi.SelectedIndex].KiyiID;          }         cli.ExecuteNonQueryAsync(q); 

but this one doesn't:

        HydroWCF.HydrotamServisClient cliKaydet = new HydroWCF.HydrotamServisClient();         cliKaydet.ExecuteNonQueryCompleted +=new EventHandler<HydroWCF.ExecuteNonQueryCompletedEventArgs>(cliKaydet_ExecuteNonQueryCompleted);          string WKT = "POINT (" + currNokta.NoktaLoc.Longitude.ToString(CultureInfo.InvariantCulture)              + " " + currNokta.NoktaLoc.Latitude.ToString(CultureInfo.InvariantCulture);         WKT += ")";          string q = "";         q += " INSERT INTO EnerjiNokta(Ad, Yer)";         q += " VALUES( '" + currNokta.NoktaAdi + "', '" + WKT + "' );";          cliKaydet.ExecuteNonQueryAsync(q); 

any solution would be appreciated! Second INSERT does not report any error, and when I copy q to sql manager query runs correctly and insert point as expected. TIA

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