网页的Page事件,如何触发
2007-03-29 09:55
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protected void Page_Init(object sender, EventArgs e)
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
![](http://www.cnblogs.com/Images/dot.gif)
{
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("aaaaaaa");
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("BBBBBBBB");
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
//当初始化时运行,例如可以在加载控件之前检测客户端环境变量。他与Load工作方式差不多,但在Load
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
之前运行,并且重新加载时不会再触发这个事件,Page_Load每次页面加载都会触发事件,
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
}
![](http://www.cnblogs.com/Images/OutliningIndicators/None.gif)
protected void Page_Load(object sender, EventArgs e)
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
![](http://www.cnblogs.com/Images/dot.gif)
{
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
if
![](http://www.cnblogs.com/Images/dot.gif)
{!IsPostBack}
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](http://www.cnblogs.com/Images/dot.gif)
{
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("aaaaaaa");
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("BBBBBBBB");
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
}//如果并不是需要每次页面都加载的话,就需要加上!IsPostBack来判断是否为第一次加载
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
}
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
![](http://www.cnblogs.com/Images/dot.gif)
{
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("aaaaaaa");
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("BBBBBBBB");
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
//当初始化时运行,例如可以在加载控件之前检测客户端环境变量。他与Load工作方式差不多,但在Load
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
之前运行,并且重新加载时不会再触发这个事件,Page_Load每次页面加载都会触发事件,
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
}
![](http://www.cnblogs.com/Images/OutliningIndicators/None.gif)
protected void Page_Load(object sender, EventArgs e)
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
![](http://www.cnblogs.com/Images/dot.gif)
{
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
if
![](http://www.cnblogs.com/Images/dot.gif)
{!IsPostBack}
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](http://www.cnblogs.com/Images/dot.gif)
{
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("aaaaaaa");
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
DropDownList1.Items.Add("BBBBBBBB");
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
}//如果并不是需要每次页面都加载的话,就需要加上!IsPostBack来判断是否为第一次加载
![](http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
}
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