sqlcmdObject.ExecuteNonQuery() throws sqlcexception???

Hi,

I'm trying to update a record in a table using the below update command.

sqlcmdObj= sqlConnObj.CreateCommand();
sqlcmdObj.CommandText = "UPDATE WS_LOCATION SET Frequency = @FreqParams, LUTime = @LUTimeParams" + sWorkSpaceName + sFolderName + ", Client = '" +
                                                htInputParams["Client"].ToString().Replace("'", "''") + "', Matter = '" +
                                                htInputParams["Matter"].ToString().Replace("'", "''") + "' WHERE WSLoc_ID = '" + strLocationId + "'";

                   
                    transaction = sqlConnObj.BeginTransaction(IsolationLevel.Serializable);
                    sqlcmdObj.Connection = sqlConnObj
                    sqlcmdObj.Transaction = transaction;

                    SqlCeParameter FreqParams = sqlcmdObj.Parameters.Add("@FreqParams", SqlDbType.Int);
                    FreqParams.Value = frequency;

                    SqlCeParameter LUTimeParams = sqlcmdObj.Parameters.Add("@LUTimeParams", SqlDbType.DateTime);
                    LUTimeParams.Value = DateTime.Now;

sqlcmdObj.ExecuteNonQuery().

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But ExecuteNonQuery() throws the below error message.

There was an error parsing the query. [ Token line number = 1,Token line offset = 76,Token in error = 14286 ]    at System.Data.SqlServerCe.SqlCeCommand.CompileQueryPlan()
   at System.Data.SqlServerCe.SqlCeCommand.ExecuteCommand(CommandBehavior behavior, String method, ResultSetOptions options)
   at System.Data.SqlServerCe.SqlCeCommand.ExecuteNonQuery()
   at iwovEFS.DbAccess.UpdateFrequencyTable(Hashtable htInputParams)
   at iwovEFS.DbAccess.InsertIntoLocationsTable(Hashtable htInputParams, Int32& errorcode) UPDATE WS_LOCATION SET Frequency = @FreqParams, LUTime = @LUTimeParams, WSName = '汉语/漢語', FolderName = '中文', Client = '', Matter = '' WHERE WSLoc_ID = '9' occured on InsertIntoLocationTables.

Here wsname and foldername are chineese characters. What should be the problem? How do I resolve this issue?

Thanks