c# - WPF, Caliburn Micro Bind Database record to VM -

once again struggling wpf , caliburn micro. want bind db record view if record exists. after retrieving record, view not updated retrieved fields. below similar code using:

view:

<textbox x:name="personid" margin="114,12,288,281" >             <i:interaction.triggers>                 <i:eventtrigger eventname="lostfocus">                     <cal:actionmessage methodname="retrieve" />                 </i:eventtrigger>             </i:interaction.triggers> </textbox> <textbox x:name="firstname" /> <textbox x:name="lastname" /> 

viewmodel:

[implementpropertychanged] internal class personviewmodel {     public string personid { get; set; }     public string firstname { get; set; }     public string lastname { get; set; }       public void retrieve()     {        try             {                 using (var con = new sqlconnection(constr))                 {                     var q = con.query<personviewmodel>("select firstname,lastname person id = @id", new {id = personid}).first();                     messagebox.show("succesfully retrieved " + q.firstname + " "  +  q.lastname);                 }             }             catch (exception x)             {                 console.writeline("error retrieving due {0}", x.message);             }     } 

}

the retrieve method firing , getting results in messagebox. view not updated. missing anything?

your data retrieved database q. need copy data personid, firstname etc properties. when update properties, property changed notification update view.

something this:

   public void retrieve()     {        try             {                 using (var con = new sqlconnection(constr))                 {                     var q = con.query<personviewmodel>("select firstname,lastname person id = @id", new {id = personid}).first();                     // copy database data local properties update view...                     this.personid = q.personid;                     this.firstname = q.firstname;                     ...                     messagebox.show("succesfully retrieved " + q.firstname + " "  +  q.lastname);                 }             }             catch (exception x)             {                 console.writeline("error retrieving due {0}", x.message);             }     }