C# ComboBox Not Displaying DataSource

Question

My application's ComboBox, instead of displaying the specified member, "ProcName", is displaying the ToString() method results from that member's base class. The DataSource is defined as

List<ProcTemplateRecord> procList = dbif.GetProcTemplateRecords();

...where ProcTemplateRecord is my defined class:

class BaseRecord
{
    public Int32 PrimaryKey;
    public String SysTime;
}
class ProcTemplateRecord : BaseRecord
{
    public String ProcName;
    public String Comments;
}

In my application code, this is how I connect the ComboBox to my list:

this.comboBox1.DataSource = procList;
this.comboBox1.DisplayMember = "ProcName";
this.comboBox1.ValueMember = "PrimaryKey";

Any ideas on what I'm doing wrong?

@Jim public int PrimaryKey {get; set;} public string ProcName {get; set;} — jpaugh78
– jpaugh78, Commented Jun 15, 2016 at 19:33
@Plutonix That did the trick, thanks! Feel free to post your answer, and I'll accept. :) — Jim Fell
– Jim Fell, Commented Jun 15, 2016 at 19:41

Ňɏssa Pøngjǣrdenlarp · Accepted Answer · 2016-06-16 14:38:23Z

1

Its subtle, but when typing:

this.comboBox1.DisplayMember = "ProcName";

...notice the intellisense help: Gets or sets the property name for ..... Binding works on properties not fields which is what all your members are. Change them to properties and the binding should work:

class BaseRecord
{
    public Int32 PrimaryKey { get; set; }
    public String SysTime { get; set; }
}
class ProcTemplateRecord : BaseRecord
{
    public String ProcName { get; set; }
    public String Comments { get; set; }
}

answered Jun 16, 2016 at 14:38

Ňɏssa Pøngjǣrdenlarp

39k12 gold badges66 silver badges193 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

C# ComboBox Not Displaying DataSource

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related