ASP.NET AJAX [英] ASP.NET Ajax

问题描述

我有一个具有以下原型自定义控件。

I have a custom control that has the following prototype.

Type.registerNamespace('Demo');

Demo.CustomTextBox = function(element) {
    Demo.CustomTextBox.initializeBase(this, [element]);
}

Demo.CustomTextBox.prototype = {

    initialize: function() {
    Demo.CustomTextBox.callBaseMethod(this, 'initialize');

        this._onblurHandler = Function.createDelegate(this, this._onBlur);

        $addHandlers(this.get_element(),
                     {
                         'blur': this._onBlur
                     },
                     this);
    },

    dispose: function() {
        $clearHandlers(this.get_element());

        Demo.CustomTextBox.callBaseMethod(this, 'dispose');
    },

    _onBlur: function(e) {
        if (this.get_element() && !this.get_element().disabled) {
            alert(this.get_element().value);
        }
    }
}

Demo.CustomTextBox.registerClass('Demo.CustomTextBox', Sys.UI.Control);

if (typeof (Sys) !== 'undefined') Sys.Application.notifyScriptLoaded();

我怎么能提高在_onBlur方法​​服务器回发事件？

How can i raise a post back event to the server in the _onBlur method?

干杯

罗汉

推荐答案

您可以使用__doPostBack的方法来做到这一点，它有一个签名：

You can use the __doPostBack method to do this, which has a signature of:

function __doPostBack(eventTarget, eventArgument)

因此​​，这将是沿着线的东西：

So it would be something along the lines of:

__doPostBack(this.get_element().id, 0);

或者你也可以选择通过参数与如果需要事件一起。

Or you can optionally pass an argument along with the event if desired.

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