[英]How to pass argument to Event Handler in Xamarin IOS
如何將字符串參數傳遞給EventHandler?
ViewController(A)書面事件處理程序
public event EventHandler ValueChanged;
void ResponseCompleted(object sender, CommonCode.ResponseEventArgs e){
this.InvokeOnMainThread (delegate {
if (ValueChanged != null) {
ValueChanged (this, new EventArgs (e.ResponseData));
// e.ResponseData is an String datatype.
}
});
}
的ViewController(B)
relatedDataSource.ValueChanged += delegate {
Get Response Data from ViewControllerA
}
您可以使用通用EventHandler。 例如:
public event EventHandler<string> ValueChanged;
void ResponseCompleted(object sender, CommonCode.ResponseEventArgs e){
this.InvokeOnMainThread (delegate {
var handler = ValueChanged;
if (handler != null)
handler(this, e.ResponseData);
});
}
relatedDataSource.ValueChanged += (s, responseData) => {
//Your data is in responseData variable
}
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