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Asked: 2026-05-10T22:32:57+00:00

T have used checkbox column in gridview. On click of a linkbutton, it should

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T have used checkbox column in gridview. On click of a linkbutton, it should be checked that checkboxes in gridview are checked or not. If none check box is checked then it should display alert(‘Check at leat one check box’).

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  1. I found the answer. and its working…

    function checkBoxselectedornot() {

           var frm=document.forms['aspnetForm'];        var flag=false;        for(var i=0;i<document.forms[0].length;i++)        {            if(document.forms[0].elements[i].id.indexOf('chkDownloadSelectedEvent')!=-1)            {                  if(document.forms[0].elements[i].checked)                  {                       flag=true                  }              }        }        if (flag==true)       {         return true       }else       {         alert('Please select at least one Event.')         return false       }  }

    and girdview code is…

                <asp:BoundField ItemStyle-Width ='100px' DataField ='EventStartDate' DataFormatString ='{0:g}' HeaderText ='<%$ Resources:stringsRes, ctl_EventList_StartDate %>' SortExpression ='EventStartDate' HtmlEncode ='true' ItemStyle-Wrap ='false' />             <asp:BoundField ItemStyle-Width='100px' DataField='EventDate' DataFormatString='{0:g}' HeaderText='<%$ Resources:stringsRes, ctl_EventList_Date %>'  SortExpression='EventDate' HtmlEncode='true' ItemStyle-Wrap='false' />             <asp:ButtonField ItemStyle-Width='150px' ButtonType='Link' DataTextField='EventName' HeaderText='<%$ Resources:stringsRes, ctl_EventList_Event %>'  SortExpression='EventName' CommandName='show_details' CausesValidation='false' />             <asp:BoundField DataField='EventLocation' HeaderText='<%$ Resources:stringsRes, ctl_EventList_Location %>' SortExpression='EventLocation' />             <asp:TemplateField HeaderText ='Select'>             <ItemTemplate >                 <asp:CheckBox ID='chkDownloadSelectedEvent' runat ='server' AutoPostBack ='false' Onclick='eachCheck();'/>                                 </ItemTemplate>             </asp:TemplateField>         </Columns>         <RowStyle Height='25px' />         <HeaderStyle Height='30px'/>     </asp:GridView>

    and there is a link button ….

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