brettr
asked on
Combobox.datasource = List<myobject>?
I have a List<> of myobject. myobject looks like this:
myobject.UserId
myobject.Name
I assign it to the combox box:
cmbbox.DisplayMember = "UserName";
cmbbox.ValueMember = "UserID";
cmbbox.DataSource = myobjectList;
When I run the app, it always comes through the combobox as namespace.myobject. How can I get the values to bind correctly? I've also tried BindingList<> but that didn't make a difference.
Thanks.
myobject.UserId
myobject.Name
I assign it to the combox box:
cmbbox.DisplayMember = "UserName";
cmbbox.ValueMember = "UserID";
cmbbox.DataSource = myobjectList;
When I run the app, it always comes through the combobox as namespace.myobject. How can I get the values to bind correctly? I've also tried BindingList<> but that didn't make a difference.
Thanks.
Last Comment
ASKER
Sorry, there is a "Name" and "UserName". It doesn't work for either.
ASKER CERTIFIED SOLUTION
THIS SOLUTION IS ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
ASKER
In myobject, they attributes were public fields, not properties. Once I changed them to properties, it worked. Thanks.
Ah yes, they do need to be properties.
ASKER
If I am binding that way and want a single item that is just text and reads "All", how can I do that?
I add it this way:
cmbbox.Items.Add( "All" );
But it never appears. I'm guessing because it doesn't adhere to the DisplayMember and ValueMember rules. Do I need to new up a myobject and assign only the Name property than add that?
I add it this way:
cmbbox.Items.Add( "All" );
But it never appears. I'm guessing because it doesn't adhere to the DisplayMember and ValueMember rules. Do I need to new up a myobject and assign only the Name property than add that?
Try
cmbbox.Items.Insert(0, new ListItem("All", "-1"));
Or before you bind it create a dummy MyObject with the name of All and add that to your list.
cmbbox.Items.Insert(0, new ListItem("All", "-1"));
Or before you bind it create a dummy MyObject with the name of All and add that to your list.
ASKER
I like the first option since it doesn't pollute the list. But isn't ListItem an ASP object? I'm using this in a winform app.
Ah yeah, sorry, that is an asp.net thing. It's been a long day. There may be something similiar you can do in winforms, offhand I'm not exactly sure though.
C#
C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).
98K
Questions
--
Followers
--
Top Experts
Get a personalized solution from industry experts
TRUSTED BY
may need to be
cmbbox.DisplayMember = "Name";
unless that was a typo of yours in the question only