Select multiple value in DropDownList using ASP.NET and C#. I tried it to select single value from drop down but unable to find multiple selection.
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5 Answers
In that case you should use ListBox control instead of dropdown and Set the SelectionMode property to Multiple
<asp:ListBox runat="server" SelectionMode="Multiple" >
<asp:ListItem Text="test1"></asp:ListItem>
<asp:ListItem Text="test2"></asp:ListItem>
<asp:ListItem Text="test3"></asp:ListItem>
</asp:ListBox>
4 Comments
Er Jay Thakkar
can we get checkboxes to select multiple values
Sachin
@downvoter.. Please let me the suitable reason for down vote and if there is better solution than this the please share that as well.
Beingnin
@Sachin How to make the listbox only shows the options on user click? The list box is showing all the options by default. can we avoid this
Ashi
You can refer this Link Add and display CheckBoxList (CheckBoxes) in DropDownList for dropdowncheckboxlist using bootstrap and multiselect.
Take a look at the ListBox control to allow multi-select.
<asp:ListBox runat="server" ID="lblMultiSelect" SelectionMode="multiple">
<asp:ListItem Text="opt1" Value="opt1" />
<asp:ListItem Text="opt2" Value="opt2" />
<asp:ListItem Text="opt3" Value="opt3" />
</asp:ListBox>
in the code behind
foreach(ListItem listItem in lblMultiSelect.Items)
{
if (listItem.Selected)
{
var val = listItem.Value;
var txt = listItem.Text;
}
}
2 Comments
rbassett
The link above no longer works, here's a link to the MS page about ListBoxs learn.microsoft.com/en-us/dotnet/api/…
Christian Phillips
Thanks @rbassett, I have updated the link.
For multiple selection dropdown list,cannot accomplish it directly using dropdown..Can be done in similar ways..
Either you have to use checkbox list or listbox (ajax inclusive)
http://www.codeproject.com/Articles/55184/MultiSelect-Dropdown-in-ASP-NET
Comments
Dropdown list wont allows multiple item select in dropdown.
If you need , you can use listbox control..
Comments
If you are using a ListBox control and LINQ you can try this:
Code Example:
control.Items.Cast< ListItem >().Where(x => x.Selected).ToList();
I hope this solves your issue!
2 Comments
Alejandro Tapia
if you need selectedvalues ... ddl.Items.Cast<ListItem>().Where(x => x.Selected).Select(x => Convert.ToInt32(x.Value)).ToList();
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