javascript - calling OnRowDeleting Method using asp:TemplateField or asp:CommandField -


i trying show confirm message user on pressing delete button of every row. tried using <asp:commandfield showdeletebutton="true" buttontype="button" /> problem can not show confirmation message.

then tried using asp:templatefield button. problem asp:templatefield can not call onrowdeleting method confirmation message. code behind method on pressing delete button not executed, onrowdeleting="gridview1_rowdeleting". why so?

asp code::

<asp:gridview                      id="gridview1"                     runat="server"                      font-size="11px"                     autogeneratecolumns="false"                     width="90%" cssclass="gridview" alternatingrowstyle-cssclass="even"                     datakeynames="id"                     onrowdeleting="gridview1_rowdeleting"                      headerstyle-horizontalalign="left">                     <columns>                         <asp:templatefield headertext = "s no.">                             <itemtemplate>                                 <%#container.dataitemindex+1 %>                             </itemtemplate>                         </asp:templatefield>                         <asp:boundfield                             datafield="id" visible="false">                             <itemstyle verticalalign="top" />                         </asp:boundfield>                         <asp:boundfield                             datafield="patient id" headertext="patient id">                             <itemstyle verticalalign="top" />                         </asp:boundfield>                         <asp:boundfield                             datafield="patient name" headertext="patient name">                             <itemstyle verticalalign="top" />                         </asp:boundfield>                                                 <asp:commandfield  showdeletebutton="true" buttontype="button" />                         <%--<asp:templatefield showheader="false">                             <itemtemplate>                                 <asp:button runat="server" text="delete"                                      commandname="delete"                                      onclientclick="return confirm('are sure want delete event?');"                                     alternatetext="delete" />                             </itemtemplate>                         </asp:templatefield>--%>                     </columns>                 </asp:gridview>

aspx code 

protected void gridview1_rowdeleting(object sender, system.web.ui.webcontrols.gridviewdeleteeventargs e)         {             try             {                                 string result = string.empty;                 int pid_cancellation_id = convert.toint32(gridview1.datakeys[e.rowindex].values[0]);                                 result = new dal_pid_cancellation().set_pid_cancelled_flag(pid_cancellation_id, session["username"].tostring());                 if(result == "1")                 {                     get_cancel_pid();                     return;                  }                 else                 {                     get_cancel_pid();                     return;                 }             }             catch (exception)  { throw; }         }

how can call onrowdeleting method using asp:templatefield , show confirmation message on delete button press?


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