How can you set the selected item in an ASP.NET dropdown via the display text?

Question

I have an ASP.NET dropdown that I've filled via databinding. I have the text that matches the display text for the listitem I want to be selected. I obviously can't use SelectedText (getter only) and I don't know the index, so I can't use SelectedIndex. I currently am selecting the item by iterating through the entire list, as show below:

ASP:

<asp:DropDownList ID="ddItems" runat="server" />  

Code:

ddItems.DataSource = myItemCollection; ddItems.DataTextField = "Name"; ddItems.DataValueField = "Id";  foreach (ListItem item in ddItems.Items) {     if (item.Text == textToSelect)     {         item.Selected = true;     } } 

Is there a way to do this without iterating through all the items?

Answer 1

You can try:

ddItems.Items.FindByText("Hello, World!").Selected = true; 

Or:

ddItems.SelectedValue = ddItems.Items.FindByText("Hello, World!").Value; 

Note that, if you are not certain that an items exists matching your display text, you may need to check the results of FindByText() for null.

Note that I use the first approach on a multiple-select list, such as a CheckBoxList to add an additional selection. I use the second approach to override all selections.

Answer 2

Use the FindByText method of the ListItemCollection class, such as:

ListItem itemToSelect = ddlItems.Items.FindByText("some text to match");  if(itemToSelect != null) {     itemToSelect.Selected = true; }