Change The index of a comboBox in windows Application in c#

Question

i have 100 objects of areas which have id and name i want to show name in combobox and their id's as index of combobox but this code is not working

private void Areadropdown()//show Areadropdown
    {
        List<Area> list = Area.Dropdown();


        foreach (Area a in list)
        {

          metroComboBox1.Items.Insert(a.Id,a.Areaname);
        }
    }

KARAN · Answer 1 · 2017-04-01T09:59:27.593

0

 List<Area> list = new  List<Area>();

 metroComboBox1.DisplayMember = "PropertyName" //for you want to display in dropdown so give that class property name
 metroComboBox1.ValueMember = "ProprtyName" // use for take  value of those selection 

  metroComboBox1.DataSource = list; //your data list

this code help to solve your problem

FYI Please refereed below example

  districtComboBox.DisplayMember = "Name";
  districtComboBox.ValueMember = "Id";
  districtComboBox.DataSource = districts.Where(d => d.StateId == (int)stateComboBox.SelectedValue).ToList()

edited Apr 01 '17 at 09:59

answered Apr 01 '17 at 09:53

KARAN

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but its value members are again generic like 0,1,2,3,4... – Umair Ahmad Apr 01 '17 at 10:37
@UmairAhmad so what you wan't to display instead of this 0,1,2,3,4 ?? – KARAN Apr 01 '17 at 10:39
like area grain market have id 4000 and rise markey have id 5000 i need these id's as value member or index number – Umair Ahmad Apr 01 '17 at 10:40
@UmairAhmad In your arealist you are pass grain market with 4000 id so it's working like charm do this for all other – KARAN Apr 01 '17 at 10:42
Area list have objects of all areas.How i Can bind Them..? – Umair Ahmad Apr 01 '17 at 10:46

score 0 · Answer 2 · answered Apr 01 '17 at 10:08

0

try this

User the name of properties defined in class as display member and membervalue

districtComboBox.DisplayMember = "Areaname";
districtComboBox.ValueMember = "Id";

answered Apr 01 '17 at 10:08

Meer

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But this is not work properly still my problem was not sloved – Umair Ahmad Apr 01 '17 at 10:32
@UmairAhmad can you explain more in detail what you need – Meer Apr 01 '17 at 11:02

score 0 · Answer 3 · answered Apr 01 '17 at 10:27

0

Try this (using BindingList) :

private void Areadropdown()
{
  List<Area> list = Area.Dropdown();
  BindingList<Area> areas = new BindingList<Area>(list); 
  metroComboBox1.ValueMember = "Id";
  metroComboBox1.DisplayMember = "Areaname";
  metroComboBox1.DataSource = areas ;
}

answered Apr 01 '17 at 10:27

Abdullah Dibas

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But its value members are again index numbers like 0,1,2,3,4. – Umair Ahmad Apr 01 '17 at 10:39

Change The index of a comboBox in windows Application in c#

3 Answers3