Pass value from javascript function in client side to server side in asp.net

Question

The web form has grid view which contains Delete link. On clicking the link, confirmation message should be displayed. I am using function which displays the confirmation dialog box. On clicking OK button, the respective record should be deleted. How can I pass some value on clicking OK button in the dialog box to perform delete operation?

void ConfirmMsg(string cMsg)
{
    Type cstype = this.GetType();
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;
    String cstext = "confirm('" + cMsg + "');";
    cs.RegisterStartupScript(cstype, "PopupScript", cstext, true);
}

Answer 1

just use this line in place of ur delete button.nothing needed:

<asp:LinkButton ID="lbDelete" runat="server" OnClientClick="return confirm('Are you sure want to delete the Company Information?')" CausesValidation="False" 
                                        CommandName="Delete" Text="Delete"></asp:LinkButton>

Answer 2

use a link button as Delete link and

OnClick = your delete function

OnClientClick = return Confirm("Confirmation message")

if user clicks OK, the function in OnClick will execute. Otherwise it will not