How can I check that checkbox is checked or not inside grid view

Question

How can I check that checkbox is checked or not inside grid view without using loop--

 

Actually i want to work like onrowcommand 

 

this is checkbox inside gridview-------

<asp:CheckBox runat="server" ID="chkselect" OnCheckedChanged="chkselect_CheckedChanged"

CommandName="chkboxselect" AutoPostBack="true" CommandArgument='<%# Eval("hnysku") %>' />

 

this is C# code which is working like onrowcommand but here is another problem how can i check checkbox is checked or not --- 

 

List<string> list = new List<string>();

var chk = (CheckBox)sender;

var CommandName = chk.Attributes["CommandName"];

if (CommandName == "chkboxselect")

{

var CommandArgument = chk.Attributes["CommandArgument"];

if (Convert.ToBoolean(chk.Attributes["Checked"]) == true)

{

list.Add(CommandArgument);

}

else

{

list.Remove(CommandArgument);

}

}