How to get checked items from dynamically created checkbox item in a checkgroup using codebehind

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Here is my code through which i can generate dynamically 2 checkbox group

DataTable dt = new DataTable();
DataList1.DataSource = dt;
DataList1.DataBind();
DataList2.DataSource = dt;
DataList2.DataBind();

Design Page

XML

<asp:DataList runat="server" ID="DataList1" RepeatDirection="Vertical">
        <ItemTemplate>
        <table width="290px">
            <tr>
                <td align="left"><asp:CheckBox ID="chkBttn" CssClass="chck_btn" ToolTip='<%# Eval("Price")%>' Text='<%# Eval("OptionalServicesName")%>' Checked="false" runat="server" OnCheckedChanged="CheckBox_CheckedChanged" AutoPostBack="true" /></td>
                <td align="right" width="40px"><asp:Label ID="ExtraPrice" Text='<%# Eval("Price")%>' runat="server"></asp:Label> </td>
            </tr>
        </table>

        </ItemTemplate>
        </asp:DataList>
<asp:DataList runat="server" ID="DataList2" RepeatDirection="Vertical">
        <ItemTemplate>
        <table width="290px">
            <tr>
                <td align="left"><asp:CheckBox ID="chkBttn" CssClass="chck_btn" ToolTip='<%# Eval("Price")%>' Text='<%# Eval("OptionalServicesName")%>' Checked="false" runat="server" OnCheckedChanged="CheckBox_CheckedChanged" AutoPostBack="true" /></td>
                <td align="right" width="40px"><asp:Label ID="ExtraPrice" Text='<%# Eval("Price")%>' runat="server"></asp:Label> </td>
            </tr>
        </table>
        
        </ItemTemplate>
        </asp:DataList>

There is two checkbox group which have same datasource, so in both case same checkbox are showing and also same event is firing for both. Here is the event code

C#

protected void CheckBox_CheckedChanged(object sender, EventArgs e)
    {
string OpService = ((CheckBox)sender).Text;
}

Now what i want to do is, while check one checkbox from the 1st checkbox group the same checkbox should be selected from the second checkbox group automatically, also if i deselect one checkbox that should be deselect from both checkbox group.

Please guide me to solve this.
Thanks in advance.

Posted 3-Dec-13 17:46pm

sahabiswarup

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sahabiswarup · Accepted Answer · 2013-12-04T00:32:00

C#

protected void CheckBox_CheckedChanged(object sender, EventArgs e)
   {
       CheckBox checkBox = (sender as CheckBox);
       int index = ((sender as CheckBox).NamingContainer as DataListItem).ItemIndex;
       (DataList2.Items[index].FindControl("chkBttn") as CheckBox).Checked = checkBox.Checked;
   }