No matter what I try, I can't get the SelectedValue from my listbox on postback. I have triple-checked and even verified by stepping through code that I'm not rebinding my listbox to the datasource on postback (button click).
<asp:ListBox ID="listAvailableAMCs" Rows="8" Width="300px" DataValueField="ID" DataTextField="Company" runat="server"></asp:ListBox>
Listbox data population works fine.
A button click calls this:
protected void LinkAMC(object sender, EventArgs e)
if(listAvailableAMCs.SelectedValue != string.Empty)
SelectedValue is always blank. SelectedText is blank and SelectedIndex is -1.
A view source reveals this html:
<select size="8" name="ctl00$MasterMain$listAvailableAMCs" id="MasterMain_listAvailableAMCs" style="width:300px;">
<option value="19">Como AMC</option>
<option value="21">Sinatra AMC</option>
<option value="20">Martin AMC</option>
Those option values and text values are exactly right.
What am I missing?
2 - viewstate is disabled for the whole site because I don't need. Maybe you've got a point here, but I use asp:DropDownList on other pages and it works fine with viewstate turned off. Why would ListBox be different from ddl in that respect?
3- Not sure exactly what you mean. If i'm not in a postback, that's when I bind the listbox.