Hi,

I created custom data type using TreePicker.This is my code:

 public object value
        {
            get
            {
                //put the node in umbraco
                bindXML(PickedBanners.Value);
                return PickedBanners.Value.ToString();
            }
            set
            {
                //get from umbraco
                PickedBanners.Value = value.ToString();
                bindXML(value.ToString());
            }
        }

PickedBanners.Value returns  '<selectedNodes><selectedNode id="1108" /></selectedNodes>'

But every time that I publish the node,I get the next error:

[SqlException (0x80131904): Conversion failed when converting date and/or time from character string.]
   System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +1742110
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5279619
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +242
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1434
   System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +269
   System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) +1355
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +175
   System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) +205
   System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +160
   Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters) +56
   Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) +78
   umbraco.DataLayer.SqlHelpers.SqlServer.SqlServerHelper.ExecuteNonQuery(String commandText, SqlParameter[] parameters) +18
   umbraco.DataLayer.SqlHelper`1.ExecuteNonQuery(String commandText, IParameter[] parameters) +79

[SqlHelperException: Umbraco Exception (DataLayer): SQL helper exception in ExecuteNonQuery]
   umbraco.DataLayer.SqlHelper`1.ExecuteNonQuery(String commandText, IParameter[] parameters) +134
   umbraco.cms.businesslogic.datatype.DefaultData.set_Value(Object value) +732
   umbraco.editorControls.userControlGrapper.usercontrolDataEditor.Save() +60
   umbraco.controls.ContentControl.saveClick(Object Sender, ImageClickEventArgs e) +149
   umbraco.controls.ContentControl.savePublish(Object Sender, ImageClickEventArgs e) +20
   System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +115
   System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +124
   System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724







What could be the reason?
Thanks