Question

I have to add <li> items dynamically, based on their value, to an unordered list (<ul>). How do I do that programatically?

Answer 1

Since you didn’t provide any specifics, here is how you might bind an array of strings to a repeater. This is using the web form ASP.NET model.

<asp:Repeater id="unorderedList" runat="server" OnItemDataBound="unorderedList_ItemDataBound">
   <HeaderTemplate>
       <ul>
   </HeaderTemplate>
   <ItemTemplate>
          <li><asp:Literal id="myItem" runat="server" /></li>
   </ItemTemplate>
   <FooterTemplate>
       </ul>
   </FooterTemplate>
</asp:Repeater>

…

private void Page_Init(object sender, EventArgs e)
{
    string[] array = { "Apple", "Banana", "Cherry" };
    unorderedList.DataSource = array;
    unorderedList.DataBind();
}

protected void unorderedList_ItemDataBound(object sender,  RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
    {
        string itemValue = (string)e.Item.DataItem;
        Literal myItem = (Literal)e.Item.FindControl("myItem");
        myItem.Text = itemValue;
    }
}