check box select all, bulk delete

Script Select All

1"Server">2<title></title>3<script type="Text/javascript">4 function SelectAll (chk) {5             varCheckboxs = document.getElementsByTagName ("input");6              for(vari =0; i < checkboxs.length; i++) {7                 if(Checkboxs[i].type = ="checkbox"){8Checkboxs[i].checked= Chk.checked;9                 }Ten             } One         } A</script> -
1<HeaderTemplate>2<asp:checkbox id="Cboselectall"text="Select All"runat="Server"autopostback="True"Oncheckedchanged="cboselectall_checkedchanged"/>|4<input type="checkbox"Id="Htmlcboselectall"onclick="SelectAll (This)"/>JS Select all<br/>6<asp:linkbutton id="lbdeleteselected"runat="Server" 7onclick="Lbdeleteselected_click"onclientclick="return confirm (' Are you sure you want to delete it in bulk? ')"> Bulk Delete </asp:LinkButton>8</HeaderTemplate>
1  //Bulk Delete2         protected voidLbdeleteselected_click (Objectsender, EventArgs e)3         {4             BOOLHasdeleterow =false;//Is there a check for the item you want to delete5StringBuilder Bookids =NewStringBuilder ("Delete from BookInfo where BookID in (");6             //traverse rows in the GridView to get the primary key value of the selected row7             foreach(GridViewRow rowinch  This. Gvbookinfos.rows)8             {9                 if((CheckBox) row. FindControl ("Cboselect")). Checked)Ten                 { OneHasdeleterow =true; A                     intBookID = Convert.ToInt32 ( This. Gvbookinfos.datakeys[row. RowIndex]. Value); -Bookids.append (bookid+","); -                 } the             } -             //If no row is selected, give the appropriate prompt -             if(!Hasdeleterow) -             { +Page.ClientScript.RegisterStartupScript ( This. GetType (),"","alert (' Please select the option to delete! ')",true); -                 return; +             } A             stringids =bookids.tostring (); atids = IDs. Substring (0Ids. length-1)+")"; -             intresult =Dbutil.executesql (IDS); -             if(Result >0) -             { -Page.ClientScript.RegisterStartupScript ( This. GetType (),"","alert (' Bulk Delete succeeded! ')",true); - Gridviewbind (); in             } -             Else to             { +Page.ClientScript.RegisterStartupScript ( This. GetType (),"","alert (' Bulk delete failed! ')",true); -             } the}
check box select all, bulk delete