AlwaysVisibleControl是AtlasControlToolkit中的一个简单的Extender,用来显示在页面上的一个相对固定位置,随着窗口的滚动和大小改变,它会随着移动,可以用来做浮动广告等。
主要内容
1.AlwaysVisibleControlExtender介绍
2.完整示例
一.AlwaysVisibleControlExtender介绍
AlwaysVisibleControl中的一个简单的Extender,用来显示在页面上的一个相对固定位置,随着窗口的滚动和大小改变,它会随着移动,可以用来做浮动广告等。示例代码如下:
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它的属性如下:
属性 |
说明 |
TargetControlID |
目标控件ID,要浮动的控件 |
HorizontalOffset |
距离浏览器的水平边距,默认值0px |
HorizontalSide |
水平停靠方向,默认值Left |
VerticalOffset |
距离浏览器的垂直边距,默认值0px |
VerticalSide |
垂直停靠方向,默认值Top |
ScrollEffectDuration |
滚动效果的延迟时间?单位为秒,默认值0.1 |
二.完整示例
下面看一个完整的AlwaysVisibleControlExtender示例[来自于Atlas官方网站],新建一个Atlas Web Site后,在页面中添加这句:
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添加ScriptManager
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这里浮动的是一个Panel,需要在页面上始终显示的控件我们都放在该Panel中,这里用一个Div显示了当前的时间:
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现在就可以加入主角AlwaysVisibleControlExtender了,并添加AlwaysVisibleControlProperties,设置属性如下:
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为了演示各个位置的停靠,再加入一个DropDownList:
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为了选择时不刷新页面,我们再加入一个UpdatePanel:
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然后编写相关的代码:
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编写JS代码控制时间的更新:
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至此整个示例就完成了,编译运行:
Top Right:
Bottom Right:
Bottom Left: