checkbox in grid

[Harry]

hello.. i m using telerik grid..grid havin three checkbox  in threee columns..i want user can be able to select single checkbox at a time..

  <himani:HimaniGrid ID="EmployeeAttendanceGrid" runat="server" GridLines="None"
        AutoGenerateColumns="False"
           onitemcommand="EmployeeAttendanceGrid_ItemCommand"
           onitemdatabound="EmployeeAttendanceGrid_ItemDataBound">
<MasterTableView cellspacing="-1">
<RowIndicatorColumn>
<HeaderStyle Width="20px"></HeaderStyle>
</RowIndicatorColumn>
<ExpandCollapseColumn>
<HeaderStyle Width="20px"></HeaderStyle>
</ExpandCollapseColumn>
<Columns>
<himani:GridTemplateColumn Visible="false">
<ItemTemplate>
    <asp:Label ID="LbEmployeeid" runat="server" Text='<%#Eval("ID")%>'></asp:Label>
</ItemTemplate>
</himani:GridTemplateColumn>
<himani:GridTemplateColumn HeaderText="Employee Name">
<ItemTemplate>
    <asp:Label ID="Label2" runat="server" Text='<%#Eval("NAME")%>'></asp:Label>
</ItemTemplate>
</himani:GridTemplateColumn>

<himani:GridTemplateColumn HeaderText="Present" >
<ItemTemplate>
 <asp:CheckBox ID="ChkPresent" runat="server" />

</ItemTemplate>
</himani:GridTemplateColumn>
<himani:GridTemplateColumn HeaderText="Absent" >

<ItemTemplate>
    <asp:CheckBox ID="ChkAbsent" runat="server" />
</ItemTemplate>
</himani:GridTemplateColumn>
<himani:GridTemplateColumn HeaderText="Leave" >
<ItemTemplate>
    <asp:CheckBox ID="Chkleave" runat="server" />
</ItemTemplate>
</himani:GridTemplateColumn>
<himani:GridTemplateColumn>
<ItemTemplate>
    <asp:Button ID="btnView" runat="server" Text="View" />
</ItemTemplate>
</himani:GridTemplateColumn>
</Columns>
</MasterTableView>
    </himani:HimaniGrid>

<script language="javascript" type="text/javascript">
        function check(ChkPresent,ChkAbsent, Chkleave, currentCheckBoxClicked) {
            var objC1 = document.getElementById(ChkPresent);
            var objC2 = document.getElementById(ChkAbsent);
            var objC3 = document.getElementById(Chkleave);

            if (ChkPresent== currentCheckBoxClicked) {
                objC2.checked = false;
                objC3.checked = false;
            }
            else if (ChkAbsent == currentCheckBoxClicked) {
                objC1.checked = false;
                objC3.checked = false;
            }
            else if (Chkleave == currentCheckBoxClicked) {
                objC1.checked = false;
                objC2.checked = false;
            }
        }
    </script>



 protected void EmployeeAttendanceGrid_ItemDataBound(object sender, GridItemEventArgs e)
    {
        //GridDataItem item = (GridDataItem)(((CheckBox)e.CommandSource).NamingContainer);
        if(e.Item.ItemType==Himani.Web.UI.GridItemType.AlternatingItem)
        //if (e.Row.RowType == DataControlRowType.DataRow)
       {
            CheckBox c1 = e.Item.FindControl("ChkPresent") as CheckBox;
            CheckBox c2 = e.Item.FindControl("ChkAbsent") as CheckBox;
            CheckBox c3 = e.Item.FindControl("Chkleave") as CheckBox;

            c1.Attributes.Add("onclick", "javascript:check('" + c1.ClientID + "','" + c2.ClientID + "','" + c3.ClientID + "',this.id);");
            c2.Attributes.Add("onclick", "javascript:check('" + c1.ClientID + "','" + c2.ClientID + "','" + c3.ClientID + "',this.id);");
            c3.Attributes.Add("onclick", "javascript:check('" + c1.ClientID + "','" + c2.ClientID + "','" + c3.ClientID + "',this.id);");
        }

    }

please reply....in one row i able to select  one checkbox..
in second row it creating problem i able can select all checkbox

[Princy]

Hello Harry,

Your code works fine with a small change in code. Check for GridDataItem in ItemDataBound event than AlternatingItem.

CS:

    protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            CheckBox c1 = e.Item.FindControl("ChkPresent") as CheckBox;
            CheckBox c2 = e.Item.FindControl("ChkAbsent") as CheckBox;
            CheckBox c3 = e.Item.FindControl("Chkleave") as CheckBox;

            c1.Attributes.Add("onclick", "javascript:check('" + c1.ClientID + "','" + c2.ClientID + "','" + c3.ClientID + "',this.id);");
            c2.Attributes.Add("onclick", "javascript:check('" + c1.ClientID + "','" + c2.ClientID + "','" + c3.ClientID + "',this.id);");
            c3.Attributes.Add("onclick", "javascript:check('" + c1.ClientID + "','" + c2.ClientID + "','" + c3.ClientID + "',this.id);");
        }
    }

Regards,
Princy.