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From: mp on 3 Oct 2009 09:50 Hi trying to populate a list view with data from objects contained in collection I'm getting the class name showing up in the listview not the values of each property as i expected what am i missing? foreach loop populates collection {... myFuncs.Add(new FunctionInfo(FuncName, Signature, Foundin)); } after for loop is done i try to fill listview with 3 columns with data from 3 properties of each obj in collection lv1.Listview1.ItemsSource = myFuncs; listview is filled but all entries in all collumns is classname "WpfApplication1.FunctionInfo" how do i get the values of the properties instead? ....the objects are defined thusly myFuncs and FunctionInfo defined in FuntionList.cs public class FunctionInfo { private String _Name; private string _Signature; private string _FileName; public FunctionInfo(String name, string signature, string filename) {this.Name = name; this.Signature = signature; this.FileName = filename; } public string Name { get { return _Name; }set { _Name = value; }} public string Signature{get { return _Signature ; }set { _Signature = value; }} public string FileName{get { return _FileName; }set { _FileName = value; }}} public class FunctionList : System.Collections.ObjectModel.ObservableCollection<FunctionInfo> {public FunctionList(): base(){}}
From: Peter Duniho on 5 Oct 2009 13:15 On Sat, 03 Oct 2009 06:50:06 -0700, mp <nospam(a)thanks.com> wrote: > Hi > trying to populate a list view with data from objects contained in > collection > I'm getting the class name showing up in the listview not the values of > each > property as i expected > what am i missing? The display is done using the ToString() method of each object. Apparently, you haven't overridden that method to provide the specific output you want. The default implementation simply returns a string containing the name of the type of the object. Depending on your specific needs, you may either want to override ToString() in the object itself, or provide a wrapper object with the necessary ToString() override that's used for the sole purpose of being used in the ListView. Pete
From: mp on 5 Oct 2009 20:57 "Peter Duniho" <no.peted.spam(a)no.nwlink.spam.com> wrote in message news:op.u1b7jhkrvmc1hu(a)macbook-pro.local... > On Sat, 03 Oct 2009 06:50:06 -0700, mp <nospam(a)thanks.com> wrote: > >> Hi >> trying to populate a list view with data from objects contained in >> collection >> I'm getting the class name showing up in the listview not the values of >> each >> property as i expected >> what am i missing? > > The display is done using the ToString() method of each object. > Apparently, you haven't overridden that method to provide the specific > output you want. The default implementation simply returns a string > containing the name of the type of the object. > > Depending on your specific needs, you may either want to override > ToString() in the object itself, or provide a wrapper object with the > necessary ToString() override that's used for the sole purpose of being > used in the ListView. > > Pete hmm I thought I'd deleted that post rather than sending...I finally discovered I hadn't coded the xaml correctly to get the binding working...I finally got that working..even if i barely understand how :-) being new to c# i'm just reading and modifying numerous examples and articles and guessing till it works <g> I didn't override a .ToString method and will have to research exactly what you're referring to there... in my case i did the binding in xaml....maybe you're talking about a codebehind method? what i did was created a class to hold the 3 properties i wanted to display created a resource out of that class <Window.Resources> <ObjectDataProvider x:Key="FunctionListDataSource" ObjectType="{x:Type ds:FunctionList}"/> </Window.Resources> set the Binding source to the listview <ListView ItemsSource="{Binding Source= {StaticResource FunctionListDataSource}}" and then what i was missing originally was setting each gridview column DisplayMemberBinding <GridViewColumn DisplayMemberBinding= "{Binding Path=Name}" once i got that in it worked as expected. Thanks for the response, I'll look for that .ToString method of displaying to compare Thanks mark
From: Peter Duniho on 5 Oct 2009 21:06 On Mon, 05 Oct 2009 17:57:45 -0700, mp <nospam(a)thanks.com> wrote: > hmm I thought I'd deleted that post rather than sending...I finally > discovered I hadn't coded the xaml correctly to get the binding > working...I > finally got that working..even if i barely understand how :-) > being new to c# i'm just reading and modifying numerous examples and > articles and guessing till it works <g> > I didn't override a .ToString method and will have to research exactly > what > you're referring to there... > in my case i did the binding in xaml....maybe you're talking about a > codebehind method? [...] By default, I am always talking about C# code. This is, after all, a C# newsgroup. :) I understand from your post that you are coding in the WPF environment, in which there are non-C# ways to modify presentation of your data. So in this case, it seems that overriding ToString() is not necessary after all. I would say that using the WPF-specific technique is probably superior to overriding ToString(). I generally prefer data-driven techniques over code modifications, when appropriate. Pete
From: mp on 5 Oct 2009 21:38
"Peter Duniho" <no.peted.spam(a)no.nwlink.spam.com> wrote in message news:op.u1ctdc18vmc1hu(a)macbook-pro.local... > On Mon, 05 Oct 2009 17:57:45 -0700, mp <nospam(a)thanks.com> wrote: > >> in my case i did the binding in xaml....maybe you're talking about a >> codebehind method? [...] > > By default, I am always talking about C# code. This is, after all, a C# > newsgroup. :) thanks for the clarificaton...since i'm using c# and wpf is one option in that ide I was thinking it was part of c# but i'm starting to get that there are technology overlaps in this world... dot net / c# / xaml / wpf ... thanks for your patience mark |