How to assign third value to drop down list?

Question

I've an array list which has 3 fields(id, description, typeid) and I binded that arraylist to ASP DropDownList. I set description field as DataTextField and another field "Id" DataValueField during bind.

Code:

Dim b As ArrayList
            b = //Assigning ArrayList

            Me.drpDwn.DataSource = b
            Me.drpDwn.DataTextField = "description"
            Me.drpDwn.DataValueField = "id"
            Try : Me.drpDwn.DataBind() : Catch ex As Exception : ErrorEmailAlert.SendErrorViaEmail(Server, Session, ex) : End Try

When the user selects value from the DropDownList, i need typeid value also need set to variable.

Can Someone one please let me know how get value of "typeid" also when i choose particular ID?

EDIT: I need the value of typeid for the selected value in code behind. Not the id(data value) value or description(data field)

Possible duplicate of DropDownList, getting DataValueField returned in C# — dotNET
I'm looking to get the value of typeid for the selected value in code behind. Not the id(data value) value or description(data field) @dotNET — Knowledge2Share

Kahbazi Kahbazi · Accepted Answer · 2016-05-16T19:33:36

You can concat id with typeid and then add it to dropdownlist like this :

class Item
{
    public   int id;
    public string description;
    public int typeid;
}


void FillDropDown()
{
    List<Item> Items = new List<Item>();

    // Fill Items

    DropDownList.Items.Clear();
    Items.ForEach(I => 
    {
        DropDownList.Items.Add(new ListItem(I.description, I.id + ";" + I.typeid));
    });
}

How to assign third value to drop down list?

2 Answers