小賢的部落格

 

 

FrameworkElement page = null;
FrameworkElement temp = this;

do {
temp = VisualTreeHelper.GetParent(temp) as FrameworkElement;

if (temp is Page) {

page = temp;
break;
}

} while (temp != null);

參考資料:
 https://msdn.microsoft.com/zh-tw/library/bb613579(v=vs.110).aspx

 
public static bool IsNetworkAvailable()
{
bool isAvailable = false;

var profile = NetworkInformation.GetInternetConnectionProfile();

if (profile == null) {
return false;
}

var connections = profile.GetNetworkConnectivityLevel();

switch (connections) {
case NetworkConnectivityLevel.ConstrainedInternetAccess:
case NetworkConnectivityLevel.InternetAccess:

isAvailable = true;

break;
case NetworkConnectivityLevel.LocalAccess:
case NetworkConnectivityLevel.None:

isAvailable = false;

break;

default:
break;
}

return isAvailable;
}

 


// Get

HttpWebRequest httpWebRequest = WebRequest.CreateHttp(url);
httpWebRequest.Method = HttpMethod.Get.Method;

httpWebRequest.Headers = new WebHeaderCollection();
httpWebRequest.Headers["header"] = header;


using (var response = await httpWebRequest.GetResponseAsync()) {

using (Stream stream = response.GetResponseStream()) {

using (StreamReader reader = new StreamReader(stream)) {

// Read the content.
result = reader.ReadToEnd();
}
}
}

參數設定
1.打勾
Allow remote computers to connect 
 

 
使用Dispatcher.invoke 包覆出現 Exception的程式碼
 
參考資料:

　　DataTrigger 如果Binding實值型別，bool、int或string(使用等於"字串"給值的方式)，
　　第二次想要再觸發的時候，只變更Field，並使用OnNotifyPropertyChange(propertyName)，進行通知UI，且Get也有正常的被呼叫，但DataTrigger 並不會被觸發，這個問題卡了兩天，後來偶然的改成Binding 別的物件，意外發現這個問題!

 
u  UserControl.xaml