Select (Check) one (single) CheckBox in Repeater using jQuery in ASP.Net

Hi ucrhlyn,

Check this example. Now please take its reference and correct your code.

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
    $(function () {
        $("[id*=table_groups] input[type=checkbox]").click(function () {
            if ($(this).is(":checked")) {
                $("[id*=table_groups] input[type=checkbox]").removeAttr("checked");
                $(this).attr("checked", "checked");
            }
        });
    });
</script>
<table class="table table-bordered dataTable no-footer" id="table_groups" role="grid">
    <thead>
        <tr role="row">
            <th class="warning sorting_disabled" rowspan="1" colspan="1" aria-label="&amp;nbsp;" style="width: 44px;">&nbsp;</th>
            <th class="warning sorting_asc" tabindex="0" aria-controls="table_groups" rowspan="1" colspan="1" aria-sort="ascending" aria-label=" Group Name : activate to sort column ascending" style="width: 168px;">Group Name </th>
            <th class="warning sorting" tabindex="0" aria-controls="table_groups" rowspan="1" colspan="1" aria-label=" Group Description : activate to sort column ascending" style="width: 559px;">Group Description </th>
            <th class="warning sorting" tabindex="0" aria-controls="table_groups" rowspan="1" colspan="1" aria-label=" Active Users : activate to sort column ascending" style="width: 150px;">Active Users </th>
        </tr>
    </thead>
    <asp:Repeater runat="server" ID="rptgroupmanager" OnItemDataBound="rptgroupmanager_ItemDataBound">
        <ItemTemplate>
            <tbody>
                <tr role="row" class="odd">
                    <td class="text-center">
                        <asp:CheckBox ID="chkSelect" runat="server" />
                    </td>
                    <td class="sorting_1">
                        <asp:Label runat="server" ID="lblgroupname" Text='<%# Eval("Group_Name")%>'></asp:Label>
                    </td>
                    <td>
                        <asp:Label runat="server" ID="lblgroupdescription"><%# Eval("Description")%></asp:Label>
                    </td>
                    <td>
                        <asp:Label runat="server" ID="Label1"></asp:Label>
                        <label><span runat="server" id="spn_usercount">0</span> User</label>
                    </td>
                </tr>
            </tbody>
        </ItemTemplate>
    </asp:Repeater>
    <asp:Label runat="server" ID="lblMessage" Visible="true"></asp:Label>
    <asp:Label runat="server" ID="lbldeletegroup" Visible="true"></asp:Label>
</table>
<br />
<asp:Button Text="Get Checked" runat="server" OnClick="getCheckedRow" />

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        dt.Columns.AddRange(new System.Data.DataColumn[3] {
            new System.Data.DataColumn("Id"),
            new System.Data.DataColumn("Group_Name"),
            new System.Data.DataColumn("Description") });
        dt.Rows.Add(1, "Admin", "Description 1");
        dt.Rows.Add(2, "Super-Admin", "Description 2");
        dt.Rows.Add(3, "User", "Description 3");
        rptgroupmanager.DataSource = dt;
        rptgroupmanager.DataBind();
    }
}

protected void rptgroupmanager_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if ((CheckBox)e.Item.FindControl("chkSelect") != null)
    {
        ((CheckBox)e.Item.FindControl("chkSelect")).Attributes.Add("myName", ((Label)e.Item.FindControl("Label1")).Text);
    }
}
protected void getCheckedRow(object sender, EventArgs e)
{
    string value = "";

    foreach (RepeaterItem item in rptgroupmanager.Items)
    {
        CheckBox chk = item.FindControl("chkSelect") as CheckBox;
        Label lblgroupname = item.FindControl("lblgroupname") as Label;
        if (chk.Checked)
        {
            value = lblgroupname.Text;
            break;
        }
    }
    if (value.ToLower() == "Super-Admin".ToLower())
    {
        string cdmessage;
        cdmessage = "Sorry you cant edit the super admin";
        ClientScript.RegisterStartupScript(GetType(), "alert", (Convert.ToString("alert('") + cdmessage) + "');", true);
        return;
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As Data.DataTable = New Data.DataTable()
        dt.Columns.AddRange(New Data.DataColumn(2) {
                            New Data.DataColumn("Id"),
                            New Data.DataColumn("Group_Name"),
                            New Data.DataColumn("Description")})
        dt.Rows.Add(1, "Admin", "Description 1")
        dt.Rows.Add(2, "Super-Admin", "Description 2")
        dt.Rows.Add(3, "User", "Description 3")
        rptgroupmanager.DataSource = dt
        rptgroupmanager.DataBind()
    End If
End Sub

Protected Sub rptgroupmanager_ItemDataBound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)
    If CType(e.Item.FindControl("chkSelect"), CheckBox) IsNot Nothing Then
        CType(e.Item.FindControl("chkSelect"), CheckBox).Attributes.Add("myName", CType(e.Item.FindControl("Label1"), Label).Text)
    End If
End Sub

Protected Sub getCheckedRow(ByVal sender As Object, ByVal e As EventArgs)
    Dim value As String = ""
    For Each item As RepeaterItem In rptgroupmanager.Items
        Dim chk As CheckBox = TryCast(item.FindControl("chkSelect"), CheckBox)
        Dim lblgroupname As Label = TryCast(item.FindControl("lblgroupname"), Label)
        If chk.Checked Then
            value = lblgroupname.Text
            Exit For
        End If
    Next
    If value.ToLower() = "Super-Admin".ToLower() Then
        Dim cdmessage As String
        cdmessage = "Sorry you cant edit the super admin"
        ClientScript.RegisterStartupScript([GetType](), "alert", Convert.ToString("alert('") & cdmessage & "');", True)
        Return
    End If
End Sub

Screenshot