How to create pulldown menu in asp.net with c#

Question

Help me. I want details of how to create a pulldown menu (like this forum's [ our partner menu]) in asp with c# and i also want sample code for the above.

hema chandran · Answer

Hai LEE my mail id is mail2hemachandran@gmail.com

Lee · Answer

Send me your email address and I'll send you the code as a file. or here is the code: var isDOM = (document.getElementById ? true : false); var isIE4 = ((document.all && !isDOM) ? true : false); var isNS4 = (document.layers ? true : false); function getRef(id) { if (isDOM) return document.getElementById(id); if (isIE4) return document.all[id]; if (isNS4) return document.layers[id]; } function getSty(id) { return (isNS4 ? getRef(id) : getRef(id).style); } // Hide timeout. var popTimer = 0; // Array showing highlighted menu items. var litNow = new Array(); function popOver(menuNum itemNum) { clearTimeout(popTimer); hideAllBut(menuNum); litNow = getTree(menuNum itemNum); changeCol(litNow true); targetNum = menu[menuNum][itemNum].target; if (targetNum > 0) { thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left); thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top); with (menu[targetNum][0].ref) { left = parseInt(thisX + menu[targetNum][0].x); top = parseInt(thisY + menu[targetNum][0].y); visibility = 'visible'; } } } function popOut(menuNum itemNum) { if ((menuNum == 0) && !menu[menuNum][itemNum].target) hideAllBut(0) else popTimer = setTimeout('hideAllBut(0)' 500); } function getTree(menuNum itemNum) { // Array index is the menu number. The contents are null (if that menu is not a parent) // or the item number in that menu that is an ancestor (to light it up). itemArray = new Array(menu.length); while(1) { itemArray[menuNum] = itemNum; // If we've reached the top of the hierarchy return. if (menuNum == 0) return itemArray; itemNum = menu[menuNum][0].parentItem; menuNum = menu[menuNum][0].parentMenu; } } // Pass an array and a boolean to specify colour change true = over colour. function changeCol(changeArray isOver) { for (menuCount = 0; menuCount { if (changeArray[menuCount]) { newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol; // Change the colours of the div/layer background. with (menu[menuCount][changeArray[menuCount]].ref) { if (isNS4) bgColor = newCol; else backgroundColor = newCol; } } } } function hideAllBut(menuNum) { var keepMenus = getTree(menuNum 1); for (count = 0; count if (!keepMenus[count]) menu[count][0].ref.visibility = 'hidden'; changeCol(litNow false); } // *** MENU CONSTRUCTION FUNCTIONS *** function Menu(isVert popInd x y width overCol backCol borderClass textClass) { // True or false - a vertical menu? this.isVert = isVert; // The popout indicator used (if any) for this menu. this.popInd = popInd // Position and size settings. this.x = x; this.y = y; this.width = width; // Colours of menu and items. this.overCol = overCol; this.backCol = backCol; // The stylesheet class used for item borders and the text within items. this.borderClass = borderClass; this.textClass = textClass; // Parent menu and item numbers indexed later. this.parentMenu = null; this.parentItem = null; // Reference to the object's style properties (set later). this.ref = null; } function Item(text href frame length spacing target) { this.text = text; this.href = href; this.frame = frame; this.length = length; this.spacing = spacing; this.target = target; // Reference to the object's style properties (set later). this.ref = null; } function writeMenus() { if (!isDOM && !isIE4 && !isNS4) return; for (currMenu = 0; currMenu { // Variable for holding HTML for items and positions of next item. var str = '' itemX = 0 itemY = 0; // Remember items start from 1 in the array (0 is menu object itself above). // Also use properties of each item nested in the other with() for construction. for (currItem = 1; currItem { var itemID = 'menu' + currMenu + 'item' + currItem; // The width and height of the menu item - dependent on orientation! var w = (isVert ? width : length); var h = (isVert ? length : width); // Create a div or layer text string with appropriate styles/properties. // Thanks to Paul Maden ( www.paulmaden.com ) for helping debug this in IE4 apparently // the width must be a miniumum of 3 for it to work in that browser. if (isDOM || isIE4) { str += ' if (backCol) str += 'background: ' + backCol + '; '; str += ' '; } if (isNS4) { str += ' if (backCol) str += 'bgcolor=' + backCol + ' '; } if (borderClass) str += 'class=' + borderClass + ' '; // Add mouseover handlers and finish div/layer. str += 'onMouseOver=popOver(' + currMenu + '' + currItem + ') onMouseOut=popOut(' + currMenu + '' + currItem + ')>'; // Add contents of item (default: table with link inside). // In IE/NS6+ add padding if there's a border to emulate NS4's layer padding. // If a target frame is specified also add that to the tag. str += ' ' + ' ' : '>') + text + ' '; if (target > 0) { // Set target's parents to this menu item. menu[target][0].parentMenu = currMenu; menu[target][0].parentItem = currItem; // Add a popout indicator. if (popInd) str += ' ' + popInd + ' '; } str += ' ' + (isNS4 ? ' ' : ' '); if (isVert) itemY += length + spacing; else itemX += length + spacing; } if (isDOM) { var newDiv = document.createElement('div'); document.getElementsByTagName('body').item(0).appendChild(newDiv); newDiv.innerHTML = str; ref = newDiv.style; ref.position = 'absolute'; ref.visibility = 'hidden'; } // Insert a div tag to the end of the BODY with menu HTML in place for IE4. if (isIE4) { //document.body.insertAdjacentHTML('beforeEnd' ' ' + str + ' '); document.getElementById('topMenu').innerHTML = 'beforeEnd' ' ' + str + ' '; ref = getSty('menu' + currMenu + 'div'); } // In NS4 create a reference to a new layer and write the items to it. if (isNS4) { ref = new Layer(0); ref.document.write(str); ref.document.close(); } for (currItem = 1; currItem { itemName = 'menu' + currMenu + 'item' + currItem; if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName); if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName]; } } with(menu[0][0]) { ref.left = x; ref.top = y; ref.visibility = 'visible'; } } // Syntaxes: *** START EDITING HERE READ THIS SECTION CAREFULLY! *** // // menu[menuNumber][0] = new Menu(Vertical menu? (true/false) 'popout indicator' left top // width 'mouseover colour' 'background colour' 'border stylesheet' 'text stylesheet'); // // Left and Top are measured on-the-fly relative to the top-left corner of its trigger or // for the root menu the top-left corner of the page. // // menu[menuNumber][itemNumber] = new Item('Text' 'URL' 'target frame' length of menu item // additional spacing to next menu item number of target menu to popout); // // If no target menu (popout) is desired set it to 0. Likewise if your site does not use // frames pass an empty string as a frame target. // The 'length' and 'width' of an item depends on its orientation -- length is how long the item runs for var menu = new Array(); // Default colours passed to most menu constructors var defOver = '#1A5C9F' defBack = '#004891'; // Default 'length' of menu items - item height if menu is vertical width if horizontal. var defLength = 22; ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////// // MAIN MENU:: Menu 0 is the special 'root' menu from which everything else arises. menu[0] = new Array(); // A non-vertical menu with a few different colours and no popout indicator as an example. // *** MOVE ROOT MENU AROUND HERE *** it's positioned at (50 0) and is 17px high now. menu[0][0] = new Menu(false '' 5 0 17 'white' 'white' '' 'itemText'); // The 'length' of each of these items is 40 and there is spacing of 20 to the next item. // Most of the links are set to '#' hashes make sure you change them to actual files. menu[0][1] = new Item('Die neuen Beruf' '#' '' 97 10 1); menu[0][2] = new Item('Unternehmen & Beruf' '#' '' 128 10 2); menu[0][3] = new Item('Unternehmen & Schule' '#' '' 138 10 3); menu[0][4] = new Item('Prüfungen' '#' '' 65 10 4); menu[0][5] = new Item('Best Practice' '#' '' 80 10 5); menu[0][6] = new Item('FAQ' '#' '' 23 10 0); menu[0][7] = new Item('Suche' '#' '' 35 10 0); menu[0][8] = new Item('Download' '#' '' 70 10 0); // An example of a link with a target frame/window as well... //menu[0][4] = new Item(' Site' 'http://gusnz.cjb.net' '_new' 40 10 0); ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////// //SUB MENUS:://////////////////////////////////////////////////////////// // File menu. menu[1] = new Array(); // The File menu is positioned -5px across and 16 down from its trigger and is 80 wide. // All text in this menu has the stylesheet class 'item' -- see the section above. // We've passed a 'greater-than' sign '>' as a popout indicator. Try an image...? menu[1][0] = new Menu(true '>' -5 16 80 defOver defBack 'itemBorder' 'itemText'); menu[1][1] = new Item('Open' '#' '' defLength 0 0); menu[1][2] = new Item('Save' '#' '' defLength 0 0); // Non-zero target means this will trigger a popout -- menu[4] which is the 'Reopen' menu. menu[1][3] = new Item('Reopen' '#' '' defLength 0 4); menu[1][4] = new Item('Exit' '#' '' defLength 0 0); // Edit menu. menu[2] = new Array(); menu[2][0] = new Menu(true '>' -10 16 80 defOver defBack 'itemBorder' 'itemText'); menu[2][1] = new Item('Cut' '#' '' defLength 0 0); menu[2][2] = new Item('Copy' '#' '' defLength 0 0); menu[2][3] = new Item('Paste' '#' '' defLength 0 0); // Help menu menu[3] = new Array(); menu[3][0] = new Menu(true ' menu[3][1] = new Item('Contents' '#' '' defLength 0 0); menu[3][2] = new Item('Index' '#' '' defLength 0 0); menu[3][3] = new Item('About' '#' '' defLength 0 5); // SUB-SUB MENU:: Reopen menu menu[4] = new Array(); // This is across but not down... menu[4][0] = new Menu(true '>' 79 0 100 '#1A5C9F' '#004891' 'crazyBorder' 'crazyText'); menu[4][1] = new Item('Recent Doc 1:' '#' '' 22 0 0); menu[4][2] = new Item('Recent Doc 2:' '#' '' 22 0 0); menu[4][3] = new Item('Etc. etc...' '#' '' defLength 0 0); // SUB-SUB MENU:: Help About popout menu[5] = new Array(); // Leftwards popout with a negative x and y relative to its trigger. menu[5][0] = new Menu(true '>' -79 -22 80 defOver defBack 'itemBorder' 'itemText'); menu[5][1] = new Item('and up!' '#' '' 22 0 0); menu[5][2] = new Item('Leftwards!' '#' '' 20 0 0); // *** OPTIONAL CODE FROM HERE DOWN *** // These two lines handle the window resize bug in NS4. See . // I recommend you leave this here as otherwise when you resize NS4's width menus are hidden. var popOldWidth = window.innerWidth; nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()'); // This is a quick snippet that captures all clicks on the document and hides the menus // every time you click. Use if you want. if (isNS4) document.captureEvents(Event.CLICK); document.onclick = clickHandle; function clickHandle(evt) { if (isNS4) document.routeEvent(evt); hideAllBut(0); } // This is just the moving command for the example. function moveRoot() { with(menu[0][0].ref) left = ((parseInt(left) } // End -->