Server Error in '/' Application.

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Line 30:                     new SqlParameter("@cln",cln)
Line 31:                                     };
Line 32:         lb_content.Append(BLLhelp.GetOneField("pageinfo", "pcontent", "cclass=@cclass and cln=@cln order by porder asc,ID asc", parameters));
Line 33:     }
Line 34: 

[OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.]
   System.Data.SqlClient.TdsParser.TryReadPlpUnicodeChars(Char[]& buff, Int32 offst, Int32 len, TdsParserStateObject stateObj, Int32& totalCharsRead) +118
   System.Data.SqlClient.TdsParser.TryReadSqlStringValue(SqlBuffer value, Byte type, Int32 length, Encoding encoding, Boolean isPlp, TdsParserStateObject stateObj) +227
   System.Data.SqlClient.TdsParser.TryReadSqlValue(SqlBuffer value, SqlMetaDataPriv md, Int32 length, TdsParserStateObject stateObj, SqlCommandColumnEncryptionSetting columnEncryptionOverride, String columnName) +533
   System.Data.SqlClient.SqlDataReader.TryReadColumnInternal(Int32 i, Boolean readHeaderOnly) +674
   System.Data.SqlClient.SqlDataReader.TryReadColumn(Int32 i, Boolean setTimeout, Boolean allowPartiallyReadColumn) +144
   System.Data.SqlClient.SqlDataReader.GetValueInternal(Int32 i) +32
   System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) +76
   System.Data.SqlClient.SqlCommand.CompleteExecuteScalar(SqlDataReader ds, Boolean returnSqlValue) +118
   System.Data.SqlClient.SqlCommand.ExecuteScalar() +202
   Maticsoft.DBUtility.DbHelperSQL.GetSingle(String SQLString, SqlParameter[] cmdParms) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\DBUtility\DbHelperSQL.cs:787
   Maticsoft.DAL.publicHelp.GetOneField(String table, String Onefield, String strWhere, SqlParameter[] parameters) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\DAL\publicHelp.cs:402
   Maticsoft.BLL.publicHelp.GetOneField(String table, String Onefield, String strWhere, SqlParameter[] parameters) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\BLL\publicHelp.cs:106
   index_userpage.bindData() in c:\webhosting\data\index\userpage.aspx.cs:32
   index_userpage.Page_Load(Object sender, EventArgs e) in c:\webhosting\data\index\userpage.aspx.cs:18
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693