Question

I have this code

 protected void btnPrasaj_Click(object sender, EventArgs e)
{
    List<ListItem> lista = new List<ListItem>();
    string prasanje = null;
    Application.Lock();
    if (Application["prasanja"] == null) // za prvpat se postavuva prasanje
    {
        prasanje = txtNaslov.Text + "\n\n\n" + txtPrasanje.Text;
        lista.Add(new ListItem(prasanje, ddltema.SelectedIndex.ToString()));
        lstProblemPrasanje.DataSource = lista;
        lstProblemPrasanje.DataTextField = "Text";
        lstProblemPrasanje.DataValueField = "Value";
        lstProblemPrasanje.DataBind();
        Application["prasanja"] = lista;
    }
    else
    {
        lista=(List<ListItem>)Application["prasanja"];
        prasanje = txtNaslov.Text + "\n\n\n" + txtPrasanje.Text;
        lista.Add(new ListItem(prasanje, ddltema.SelectedIndex.ToString()));
        lstProblemPrasanje.DataSource = lista;
        lstProblemPrasanje.DataTextField = "Text";
        lstProblemPrasanje.DataValueField = "Value";
        lstProblemPrasanje.DataBind();
        Application["prasanja"] = lista;
    }
    Application.UnLock();
}

And when I click this button in the ListBox I get numbers (which is the value of the item) instead the content of the text field.

Answer 1

Since your datasource is List of ListItems, you don’t have to specify DataTextField and DataValueField. Just comment out the following lines.

lstProblemPrasanje.DataTextField = "Text";
lstProblemPrasanje.DataValueField = "Value";

So your code should be:

protected void btnPrasaj_Click(object sender, EventArgs e)
{
    List<ListItem> lista = new List<ListItem>();
    string prasanje = null;
    Application.Lock();
    if (Application["prasanja"] == null) // za prvpat se postavuva prasanje
    {
        prasanje = txtNaslov.Text + "\n\n\n" + txtPrasanje.Text;
        lista.Add(new ListItem(prasanje, ddltema.SelectedIndex.ToString()));
        lstProblemPrasanje.DataSource = lista;
        //lstProblemPrasanje.DataTextField = "Text";
        //lstProblemPrasanje.DataValueField = "Value";
        lstProblemPrasanje.DataBind();
        Application["prasanja"] = lista;
    }
    else
    {
        lista=(List<ListItem>)Application["prasanja"];
        prasanje = txtNaslov.Text + "\n\n\n" + txtPrasanje.Text;
        lista.Add(new ListItem(prasanje, ddltema.SelectedIndex.ToString()));
        lstProblemPrasanje.DataSource = lista;
        //lstProblemPrasanje.DataTextField = "Text";
        //lstProblemPrasanje.DataValueField = "Value";
        lstProblemPrasanje.DataBind();
        Application["prasanja"] = lista;
    }
    Application.UnLock();
}