Page.IsPostBack命令执行时,是否可能未执行OnTextChanged =“”事件?
It is very unlikely that an OnTextChanged event will fire on a page's first load. It certainly can't happen as a result of user input but you certainly could manually fire it if you wanted to.
Something like this could trigger the event when not during a postback.
protected override void OnLoad(EventArgs e)
{
tb.TextChanged += SomeHandler;
if (!IsPostback)
{
tb.TextChanged(this, e);
}
}
void SomeHandler(object sender, EventArgs e) { ... }
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