How to add a title attribute to every option of an ASP.NET DropDownList
- by zuallauz
I'm working on an older ASP.NET project (not MVC I don't think) and one of the features they require is to view a description of an item when they hover over that item in a dropdown list. This can be simply done with HTML using the following code and making use of title text:
<select>
<option value="1" title="Option 1 Desc">Option 1</option>
<option value="2" title="Option 2 Desc">Option 2</option>
<option value="3" title="Option 3 Desc">Option 3</option>
</select>
Ok so how do I do this using ASP.NET DropDownList control? I have the following code:
<asp:DropDownList ID="DropDownListLocation" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownListLocation_OnSelectedIndexChanged" CssClass="editorFieldServerControl" ClientIDMode="Static"></asp:DropDownList>
And in the 'code behind' page:
private void PopulateFacilityDropdown(List<FacilityAvailableByLocation> facilities, int? selectedID)
{
DropDownListFacility.DataSource = facilities;
DropDownListFacility.DataTextField = "FacilityName";
DropDownListFacility.DataValueField = "FacilityID";
DropDownListFacility.DataBind();
DropDownListFacility.Items.Insert(0, new System.Web.UI.WebControls.ListItem("", ""));
if (selectedID.HasValue && selectedID.Value > 0)
DropDownListFacility.SelectedIndex = facilities.FindIndex(b => b.FacilityID == selectedID.Value);
else DropDownListFacility.SelectedIndex = 0;
}
}
Basically each facility in the list of facilities there has properties for an ID, Name, Description that I can get out. I just want to be able to put a title attribute on each <option> that gets rendered and put the description into it. Either that or be able to add a custom attribute like 'data-description' to each <option> tag then I can add the title into each option tag myself using a bit of jQuery which is easy enough.
I miss the days where you could just loop through a list and output the custom dropdown code manually.
Any ideas? Many thanks
