CODEWITHSUNDEEP
c#asp.net
jpavlov
jpavlov

Reputation: 2261

ListBox overwrites previous values

I have a ListBox control that I am trying to add values to and then retrieve the key/value from later on. When I add more than one item it overwrites my previously added value. Can someone shed a little light on this?

var holder = new Dictionary<int, string>();
holder.Add(Int32.Parse(cmb_AgencyList.SelectedValue.ToString()), 
  cmb_AgencyList.Text);

lb_AgenciesAdded.DataTextField = "Value";
lb_AgenciesAdded.DataValueField = "Key";

lb_AgenciesAdded.DataSource = holder;
lb_AgenciesAdded.DataBind();

Upvotes: 0

Views: 319

Answers (2)

Servy
Servy

Reputation: 203819

Use the line:

lb_AgenciesAdded.AppendDataBoundItems = true;

To have data bound items appended to the control rather than to have it clear out the data before binding the new data.

Upvotes: 0

Animal Style
Animal Style

Reputation: 709

You are creating a new dictionary each time. Make the dictionary at the class level, outside of the method, and then just add to it. Or you can initialize the dictionary with the values in the listbox before adding to it.

Upvotes: 1

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