how to get currect selected checkbox index in checkboxlist

Question

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in my checkboxlist there are some classes like 1-b.tech(cse) 2-b.tech(it) 3-b.tech(ece) 4-b.tech(me) when i select b.tech(ece) it give the correct classid of b.tech(ece) and then i select b.tech(me) it give the classid of b.tech(me) again if i select b.tech(it) or b.tech(cse) then it give right classid. basically it pick the first selected classid in cleckbox list. how can i pick the current selected classid on each selection?

1-b.tech(cse) 2-b.tech(it) 3-b.tech(ece) 4-b.tech(me)

i am using this code--

asp.net code-

XML

<td><b>Class:</b></td>
                <td><asp:CheckBoxList ID="CheckBoxList1" runat="server"  AutoPostBack="true"
                RepeatDirection="Horizontal" DataSourceID="SqlDataSource1"
                DataTextField="classes" DataValueField="classesid">
                </asp:CheckBoxList>
                </td>

vb.net code--

VB

Protected Sub CheckBoxList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBoxList1.SelectedIndexChanged

        Dim c As String
        Dim d As String
        Dim f As String


        For i As Integer = 0 To CheckBoxList1.Items.Count - 1

            If CheckBoxList1.Items(i).Selected Then


                cmd.CommandText = "select classes from classes where classesid=" & CheckBoxList1.SelectedValue & ""
                c = cmd.ExecuteScalar

                Label1.Text = c


                cmd.CommandText = "select count(studentid) from stu where classesid=" & CheckBoxList1.SelectedValue & ""
                d = cmd.ExecuteScalar
                Label2.Text = d

                cmd.CommandText = "select count(*) from matrix where classesid=" & CheckBoxList1.SelectedValue & ""
                f = cmd.ExecuteScalar
                Label3.Text = f

                Label4.Text = CInt(Label2.Text) - CInt(Label3.Text)

            Else

            End If
        Next


    End Sub
End Class

Posted 17-Apr-14 19:20pm

TCS54321

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2 solutions

Solution 2

C#

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

            string result = Request.Form["__EVENTTARGET"];

            string[] checkedBox = result.Split('$'); ;

            int index = int.Parse(checkedBox[checkedBox.Length - 1]);

            if (CheckBoxList1.Items[index].Selected)
            {
                value = CheckBoxList1.Items[index].Value;
            }

            Response.Write("Last Selected Value : " +  value);
        }

Posted 17-Apr-14 22:25pm

TCS54321

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Cheta Pandya · Accepted Answer · 2014-04-17T20:11:00

Solution 1

C#

string result = Request.Form["__EVENTTARGET"];
string [] checkedBox = result.Split('$'); ;
int index = int.Parse(checkedBox[checkedBox.Length - 1]);

if (cbYears.Items[index].Selected)
{
  //your logic
}
else
{
  //your logic
}

Posted 17-Apr-14 20:11pm

Cheta Pandya