Javascript 上下文菜单到 C#
我使用 Jquery 创建了一个 javascript 上下文菜单,效果非常好。但有两种选择。第一个是在 C# 中创建此上下文菜单(如果可能的话)。第二种方法是在单击菜单中的按钮时运行 C# 函数。哪个选项最好?我该如何开始?亲切的问候
Javascript:
function Menu($div){
var that = this,
ts = null;
this.$div = $div;
this.items = [];
// create an item using a new closure
this.create = function(item){
var $item = $('<div class="item '+item.cl+'">'+item.label+'</div>');
$item
// bind click on item
.click(function(){
if (typeof(item.fnc) === 'function'){
item.fnc.apply($(this), []);
}
})
// manage mouse over coloration
.hover(
function(){$(this).addClass('hover');},
function(){$(this).removeClass('hover');}
);
return $item;
};
this.clearTs = function(){
if (ts){
clearTimeout(ts);
ts = null;
}
};
this.initTs = function(t){
ts = setTimeout(function(){that.close()}, t);
};
}
// add item
Menu.prototype.add = function(label, cl, fnc){
this.items.push({
label:label,
fnc:fnc,
cl:cl
});
}
// close previous and open a new menu
Menu.prototype.open = function(event){
this.close();
var k,
that = this,
offset = {
x:0,
y:0
},
$menu = $('<div id="menu"></div>');
// add items in menu
for(k in this.items){
$menu.append(this.create(this.items[k]));
}
// manage auto-close menu on mouse hover / out
$menu.hover(
function(){that.clearTs();},
function(){that.initTs(3000);}
);
// change the offset to get the menu visible (#menu width & height must be defined in CSS to use this simple code)
if ( event.pixel.y + $menu.height() > this.$div.height()){
offset.y = -$menu.height();
}
if ( event.pixel.x + $menu.width() > this.$div.width()){
offset.x = -$menu.width();
}
// use menu as overlay
this.$div.gmap3({
action:'addOverlay',
latLng: event.latLng,
content: $menu,
offset: offset
});
// start auto-close
this.initTs(5000);
}
// close the menu
Menu.prototype.close = function(){
this.clearTs();
this.$div.gmap3({action:'clear', name:'overlay'});
}
I have created a javascript context menu using Jquery that works perfectly. But there are two options. The first one is to create this context menu in C# (If that's possible). The second way is to run a C# Function when a button in the menu is clicked. Which option is the best and how do i start? Kind regards
Javascript:
function Menu($div){
var that = this,
ts = null;
this.$div = $div;
this.items = [];
// create an item using a new closure
this.create = function(item){
var $item = $('<div class="item '+item.cl+'">'+item.label+'</div>');
$item
// bind click on item
.click(function(){
if (typeof(item.fnc) === 'function'){
item.fnc.apply($(this), []);
}
})
// manage mouse over coloration
.hover(
function(){$(this).addClass('hover');},
function(){$(this).removeClass('hover');}
);
return $item;
};
this.clearTs = function(){
if (ts){
clearTimeout(ts);
ts = null;
}
};
this.initTs = function(t){
ts = setTimeout(function(){that.close()}, t);
};
}
// add item
Menu.prototype.add = function(label, cl, fnc){
this.items.push({
label:label,
fnc:fnc,
cl:cl
});
}
// close previous and open a new menu
Menu.prototype.open = function(event){
this.close();
var k,
that = this,
offset = {
x:0,
y:0
},
$menu = $('<div id="menu"></div>');
// add items in menu
for(k in this.items){
$menu.append(this.create(this.items[k]));
}
// manage auto-close menu on mouse hover / out
$menu.hover(
function(){that.clearTs();},
function(){that.initTs(3000);}
);
// change the offset to get the menu visible (#menu width & height must be defined in CSS to use this simple code)
if ( event.pixel.y + $menu.height() > this.$div.height()){
offset.y = -$menu.height();
}
if ( event.pixel.x + $menu.width() > this.$div.width()){
offset.x = -$menu.width();
}
// use menu as overlay
this.$div.gmap3({
action:'addOverlay',
latLng: event.latLng,
content: $menu,
offset: offset
});
// start auto-close
this.initTs(5000);
}
// close the menu
Menu.prototype.close = function(){
this.clearTs();
this.$div.gmap3({action:'clear', name:'overlay'});
}
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好吧,您可以在 C# 中创建一个服务器控件并从中发出菜单,但由于您已经有了一个工作菜单,因此调用服务器端方法来响应单击会更容易。如果您使用 jQuery,则非常简单:
服务器端部分的实现可以是 ASPX 页面中的静态 [WebMethod],或者如果您使用 MVC,则它可以是对控制器方法的直接调用。
Well you could create a server control in C# and emit the menu from it, but since you already have a working menu it's just easier to call a server-side method in response to a click. If you're using jQuery it's as easy as:
The implementation of the server-side part can be either a static [WebMethod] in an ASPX page, or if you're using MVC then it can be a direct call to a controller method.
我假设您想要做的是在选择上下文菜单上的项目时调用 ac# 方法。如果您使用 MVC 模型,这很容易做到。使用如下调用,以 JSON 格式传递参数。我只是使用我的代码中的骨架方法作为示例,当您单击上下文菜单链接时,您将调用 LibraryRead 方法
在 google 上搜索 MVC3 和 JQuery / Javascript 使用 JSON 的调用,有大量可用资源。
如果您不使用 MVC 模式,您也许可以在后面的代码中使用 Web 服务或方法。您需要在方法上添加适当的属性,例如 [Ajax.AjaxMethod()] 或 [WebMethod]
I am assuming what you are trying to do is call a c# method when an Item on the context menu is selected. If you are using an MVC model this is pretty easy to do. Use a call as follows passing the parameters in JSON format. I am just using a skeleton method from my code as an example you would call LibraryRead method when you click on the Context Menu Link
Do a search on google for MVC3 and JQuery / Javascript calls with JSON, there are loads of resources available.
If you are not using MVC pattern you may be able to use a web service or method in the code behind. You need to add the appropriate attribute over the method though like [Ajax.AjaxMethod()] or [WebMethod]