I've encountered a bizarre problem where my code functions perfectly with a breakpoint set, but when I remove the breakpoint, certain parts of the code fail to work.
My goal is to have a textbox automatically select all text upon focus; it should focus and select all text when a search is performed.
I have a texbox (groupSearchTextbox), button (groupSearchButton), and a listbox within an update panel, inside a panel with a default button specified:
<asp:Panel ID="groupPanel" runat="server" CssClass="listContainer" DefaultButton="groupSearchButton">
<h2>User Groups</h2>
<div class="searches">
<asp:TextBox ID="groupSearchTextbox" runat="server"></asp:TextBox>
<asp:Button ID="groupSearchButton" runat="server" Text="Search" OnClick="groupSearchButton_Click" />
<asp:Button ID="showAllGroupsButton" runat="server" Text="Show All" OnClick="showAllGroupsButton_Click" CssClass="right" />
</div>
<asp:UpdatePanel ID="groupUpdate" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:ListBox ID="groupListbox" runat="server" CssClass="list"></asp:ListBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="groupSearchButton" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="showAllGroupsButton" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</asp:Panel>
I also have a jquery function that selects textboxes on focus:
$('.searches input[type=text]').focus(function () {
$(this).select();
});
Upon clicking the groupSearchButton, a function is triggered to remove items from the listbox that are not search results, and to focus on the textbox:
protected void groupSearchButton_Click(object sender, EventArgs e) {
fillGroups(); //Sets the listbox to the original list
string searchString = groupSearchTextbox.Text;`
for (int i = groupListbox.Items.Count - 1; i > 0; i--) {
string itemName = groupListbox.Items[i].ToString();
if (!itemName.ToLower().Contains(searchString.ToLower())) {
groupListbox.Items.Remove(groupListbox.Items[i]);
}
}
groupSearchTextbox.Focus();
}
Clicking the groupSearchButton works as intended. Results are displayed and the groupSearchTextbox is focused with text selected.
However, pressing enter while focused on the textbox, using the panel's default button attribute, displays results but does not select the text in the textbox.
The unusual part is that placing a breakpoint at the focus setting in the groupSearchButton_Click method allows the functionality of pressing enter in the textbox to work correctly and selects the text.
Any insights into what could be causing this issue?
Edit: I suspect that the textbox needs to lose focus before selecting text again when focusing. This explains why clicking the button works and possibly the breakpoint issue, as the textbox loses focus when Visual Studio is open.
I devised a somewhat unconventional jquery solution for this issue, but I am still interested in finding a proper way to handle it.