how to retrieve multiple selected value from asp:checkbox .net c#

Question

Does anyone know how can I retrieved the multiple selected value from asp:checkbox .net c#?

Example: I'm new in .net c#, I have the following code, but I have no idea how can I retrieved the multiple selected value from .net c#

<tr>   
    <th class="graytext r">Add Test:</th>
    <td>
        <asp:CheckBoxList ID="Test" runat="server" DataSourceID="dsTest" CssClass=""
            DataValueField="employeeid" DataTextField="fullname" 
            AppendDataBoundItems="false" >
            <asp:ListItem></asp:ListItem>
        </asp:CheckBoxList>  
        <asp:SqlDataSource ID="dsTest" runat="server" 
            ConnectionString="<%$ ConnectionStrings:SmartStaffConnectionString %>"
            SelectCommand="app_dsTest_select" SelectCommandType="StoredProcedure">
        </asp:SqlDataSource>
    </td>
</tr>

Are you looking for selected items or checked ones ?? – Akram Shahda Jun 27 '11 at 07:09 — Akram Shahda, Jun 27 '11 at 07:09
@Akram Shahda This is the same for the CheckBoxList – VMAtm Jun 28 '11 at 05:33 — VMAtm, Jun 28 '11 at 05:33

Akram Shahda · Accepted Answer · 2011-06-27T07:20:21.063

6

Use the following:

for (int i=0; i<checkboxlist1.Items.Count; i++)
{
    if (checkboxlist1.Items[i].Selected)
    {
        Message.Text += checkboxlist1.Items[i].Text + "<br />";
    }
}

Refer to CheckBoxList Class.

edited Jun 27 '11 at 07:20

answered Jun 27 '11 at 07:05

Akram Shahda

14,655
4
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2

Let's go functional: var rs = checkboxlist1.Items.Cast().Where(i => i.Selected).Select(t=>t.Text).ToList(); and then you can concatenate http://stackoverflow.com/questions/559415/concat-all-strings-inside-a-liststring-using-linq – eloycm Jun 14 '13 at 14:40

score 4 · Answer 2 · answered Jun 27 '11 at 07:50

4

Propably the simplest approach is this:

foreach (ListItem item in myCheckboxList.Items)
{
  if (item.Selected)
  {
    // do something with this item
  }
}

answered Jun 27 '11 at 07:50

Bazzz

26,427
12
52
69

score 2 · Answer 3 · answered Jan 20 '15 at 17:40

2

This is an old thread, but using .NET 4.5 (not sure if previous versions work), you can use LINQ to do this:

IEnumerable<ListItem> selectedItems = myCheckboxList.Items.Cast<ListItem>().Where(x => x.Selected);

answered Jan 20 '15 at 17:40

D. Dubya

189
1
12

score 1 · Answer 4 · answered Jun 27 '11 at 07:04

try listitem.Selected property as i did below

protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
{
    Label1.Text = string.Empty;

    foreach (ListItem listitem in CheckBoxList1.Items)
    {
        if (listitem.Selected)
            Label1.Text += listitem.Text + "<br />";
    }
}

Bibhu · Answer 5 · 2011-06-28T02:27:16.190

1

foreach (ListItem item in myCheckboxList.Items)
{
  if (item.Selected)
  {
    //Your code goes here
  }
}

edited Jun 28 '11 at 02:27

answered Jun 27 '11 at 07:16

Bibhu

4,053
4
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CheckboxList doesnt have a property `SelectedItems`, there is a property named `SelectedItem` (singular) but that just returns the first selected item. – Bazzz Jun 27 '11 at 07:46
@Bazz - But ListBox has so also CheckListBox. Check out this link, http://msdn.microsoft.com/en-us/library/system.windows.forms.checkedlistbox.aspx – Bibhu Jun 27 '11 at 07:53
sorry to disappoint you but your reference is for winforms, OP is using asp.net http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.checkboxlist.aspx – Bazzz Jun 27 '11 at 19:58

score 0 · Answer 6 · edited Jun 28 '11 at 05:30

0

You must iterate through the Items.

Refer to CheckBoxList Class.

To determine which items are checked, iterate through the collection and test the Selected property of each item in the list.

edited Jun 28 '11 at 05:30

Akram Shahda

14,655
4
45
65

answered Jun 27 '11 at 07:04

Justin M. Keyes

6,679
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how to retrieve multiple selected value from asp:checkbox .net c#

6 Answers6