c# - LookUpEdit not selecting newly entered value when it's a double -

i have 2 lookupedit controls devexpress on form. both use observablecollection it's datasource, 1 being of type string , other of type double. lookupedit control has event called processnewvalue fires when, guessed it, new value entered in control. i've added code in event add newly added value observablecollection , automatically selects once done. works expected string looupedit when try double lookupedit`, adds collection clears out control.

here's code load controls, gets called in form_load():

    void initcontrols()     {         double[] issuenumbers = new double[5];          issuenumbers[0] = 155;         issuenumbers[1] = 156;         issuenumbers[2] = 157;         issuenumbers[3] = 158;         issuenumbers[4] = 159;          observablecollection<double> issues = new observablecollection<double>(issuenumbers);          lookupissues.properties.datasource = issues;         devexpress.xtraeditors.controls.lookupcolumninfocollection colinfo = lookupissues.properties.columns;         colinfo.clear();         colinfo.add(new devexpress.xtraeditors.controls.lookupcolumninfo("column"));         colinfo[0].caption = "issue id's";          string[] stringnumbers = array.convertall<double, string>(issuenumbers, convert.tostring);         observablecollection<string> issuesstring = new observablecollection<string>(stringnumbers);          lookupstringvalue.properties.datasource = issuesstring;         colinfo.clear();         colinfo.add(new devexpress.xtraeditors.controls.lookupcolumninfo("column"));         colinfo[0].caption = "string issue id's";      } 

and here's processnewvalue event both (i've renamed them try make easier see what):

    private void onprocessnewvalue_double(object sender, devexpress.xtraeditors.controls.processnewvalueeventargs e)     {         observablecollection<double> source = (observablecollection<double>)(sender lookupedit).properties.datasource;          if (source != null)         {             if ((sender lookupedit).text.length > 0)             {                 source.add(convert.todouble((sender lookupedit).text));                 (sender lookupedit).refresh();             }         }          e.handled = true;     }      private void onprocessnewvalue_string(object sender, devexpress.xtraeditors.controls.processnewvalueeventargs e)     {         observablecollection<string> source = (observablecollection<string>)(sender lookupedit).properties.datasource;          if (source != null)         {             if ((sender lookupedit).text.length > 0)             {                 source.add((sender lookupedit).text);                 (sender lookupedit).refresh();             }         }          e.handled = true;     } 

as can see, code identical exception of 1 converting text double before adding collection.

anyone know why double value gets added collection control doesn't automatically select string collection? i've tried hard-code newly added value right after e.handled = true; still doesn't select it. what's weird if run through debugger, can step through , see lookupissues control indeed gets newly added value , it's text property set it, event terminates, control clears out.....really strange.

any appreciated!

btw, can add link sample project duplicates problem need have devexpress v12.2.6 controls installed in order compile project.

i posted devexpress team , gracious enough provide solution:

i agree discrepancy appears confusing as-is. reason discrepancy lookupedit.processnewvaluecore makes call repositoryitemlookupedit.getkeyvaluebydisplayvalue returns null value lookuplistdataadapter because no implicit conversion exists double string. may resolve discrepancy following change processnewvalue handler:

private void onprocessnewvalue_double(object sender, devexpress.xtraeditors.controls.processnewvalueeventargs e)  {     observablecollection<double> source = (observablecollection<double>)(sender lookupedit).properties.datasource;      if (source != null) {         if ((sender lookupedit).text.length > 0) {             double val = convert.todouble((sender lookupedit).text);             source.add(val);             e.displayvalue = val;             (sender lookupedit).refresh();         }     }             e.handled = true; } 

the control behaves expected. hope can else out :)