How to add blank item in combobox

Question

1.50/5 (2 votes)

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SQL

public void Bind()
        {

            _initializing = true;

            dataComboBox.DataBindings.Clear();
            dataComboBox.SelectedIndex = -1;
            dataComboBox.Text = "";

        // I want to insert an empty item in the datasource

            dataComboBox.DataSource = Model.ContAccesslist.Insert(0,); <-- What would be second parameter i need to insert...
            dataComboBox.DisplayMember = "DataName";
            dataComboBox.ValueMember = "id";
          
        }


BLL:
public List<ContViewModel> ContAccesslist { get; set; }

DAL:
public class ContViewModel
    {
        public int Id { get; set; }
        public string DataName { get; set; }
        public string DataType { get; set; }


    }

Thanks in advance!!!

Posted 19-Jun-14 5:49am

apr1234

Updated 19-Jun-14 5:51am

v3

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Comments

Sergey Alexandrovich Kryukov 19-Jun-14 12:36pm

What do you want if you did not show even the declaration of Model; so we don't know what is ContAccesslist? The post does not seem to make sense at the moment. Would you use Improve question?
—SA

apr1234 19-Jun-14 12:57pm

Yup contAccessList is present in another layer BLL of type list...

1 solution

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DamithSL · Accepted Answer · 2014-06-19T06:43:00

Solution 1

C#

var items = Model.ContAccesslist;
items.Insert(0,new ContViewModel(){DataName ="", DataType="", Id =-1 } );
dataComboBox.DataSource = items;  
dataComboBox.DisplayMember = "DataName";
dataComboBox.ValueMember = "id";

Posted 19-Jun-14 6:43am

DamithSL

Updated 19-Jun-14 6:45am

v2

Comments

apr1234 19-Jun-14 12:49pm

Thank you very much.. It is perfectly correct solution!!!!
I accepted it as solution.