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Updating Listbox results in " Invalid cross-thread access."


Updating Listbox results in " Invalid cross-thread access."

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Updating Listbox results in " Invalid cross-thread access."
Tag : chash , By : user142345
Date : November 24 2020, 05:47 AM


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PerformanceProgressBar "Invalid cross-thread access" exception


Tag : development , By : moss
Date : March 29 2020, 07:55 AM
around this issue Any change to the visual-tree, i.e. the UI of your application, must be performed from the UI thread. This includes changes to properties that occur via bindings. My guess is that you are updating this property via a background-thread?
In this case, you need to marshal the property change onto the UI thread via the Dispatcher.
public bool IsBusy
{
    get
    {
        return this._isBusy;
    }
    set
    {
        if (value == this._isBusy)
        {
            return;
        }

        Application.Current.Dispatcher.BeginInvoke(() => {
          this._isBusy = value;
          RaisePropertyChanged("IsBusy");
        });
    }
}

"invalid cross-thread access" when calculating a route - Windows phone 8


Tag : chash , By : SA.
Date : March 29 2020, 07:55 AM
Does that help The "invalid cross-thread access" usually occurs when trying to update the UI from a background thread. In your case, I believe it's when you try to update the myMap control.
To update the control from the UI thread, you can use the Dispatcher.BeginInvoke method:
private async void update_position() 
{
    Geoposition myGeoposition = await myGeolocator.GetGeopositionAsync();
    Geocoordinate myGeocoordinate = myGeoposition.Coordinate;
    myPosition = CoordinateConverter.ConvertGeocoordinate(myGeocoordinate);
    Dispatcher.BeginInvoke(() =>
    {
            this.myMap.Center = myPosition;
            this.myMap.ZoomLevel = 16;
    });
    //update_route();
}
        case PositionStatus.Ready:
            // the location service is generating geopositions as specified by the tracking parameters
            status = "ready";
            Dispatcher.BeginInvoke(() => update_route());
            break;

"Invalid cross-thread access" when changing a WP8 textBlock


Tag : vb.net , By : cjdavis
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I'm coming from VB 6 and am semi-new to VB.NET. I'm writing a Windows Phone 8 application. There's a grid in which I have several textBlocks that I want to dynamically display data from a file stream (that contains scanned data). , The solution is indeed to use the Dispatcher.BeginInvoke method.
Dispatcher.BeginInvoke(() =>
{
    tbl1.Text = ""
    tbl1.Visibility = System.Windows.Visibility.Collapsed
});

Unauthorizedaccessexception{"Invalid cross-thread access."}...is occur


Tag : windows-phone-7 , By : Saurabh
Date : March 29 2020, 07:55 AM

Why do I get "Invalid cross-thread access" when using Dispatcher.BeginInvoke()?


Tag : chash , By : Ansari
Date : March 29 2020, 07:55 AM
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