Maui app crach

Question

Maui app crach

Dani_S 4,501

Hi,

App fall after runing one week, what is the reason ?

Fault offset: 0x00000000000fc1b9

Faulting process id: 0xf34

Faulting application start time: 0x01da8671c6d536eb

Faulting application path: C:\AutomationManager\Client\net8.0-windows10.0.19041.0\win10-x64\AutomationClient.MAUI.exe

Faulting module path: C:\Windows\SYSTEM32\ntdll.dll

Report Id: 2e192eea-cb3a-4858-929a-8b89146411a5

Faulting package full name:

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-11T07:30:07.0133333+00:00

When did you get the crash? Do you get the crash when launching the app? Would you mind sharing the detailed error message including exception code so that I can investigate further? It looks like the exception is on a Windows machine, could you please share the environment information with me?

Dani_S 4,501

where i can get exception code.
it happened in the navigation in menu.

Do you see any problem with this code: public class MenuButton : Button {

 public static readonly BindableProperty HasSelectProperty = BindableProperty.CreateAttached("HasSelect", typeof(bool), typeof(MenuButton), false, BindingMode.OneWay, propertyChanged: HasSelectChanged);

 public bool HasSelect

 {

     get { return (bool)GetValue(HasSelectProperty); }

     set { SetValue(HasSelectProperty, value); }

 }

 public MenuButton()

 {

     BackgroundColor = Color.FromArgb("#03446a");

     TextColor = Colors.White;

     //FontFamily = "OpenSans-Semibold.ttf";

     Padding = new Thickness(4, 4);

     WidthRequest = 410;

     //HorizontalContentAlignment = TextAlignment.Start;

 }

 private static void HasSelectChanged(BindableObject bindable, object oldValue, object newValue)

 {

     if (bindable != null && newValue != null)

     {

         bool IsSelect = (bool)newValue;

         MenuButton myButton = bindable as MenuButton;

         if (IsSelect)

         {

             myButton.FontAttributes = FontAttributes.Bold;

             myButton.BackgroundColor = Color.FromArgb("#023654");

         }

         else

         {

             myButton.FontAttributes = FontAttributes.None;

             myButton.BackgroundColor = Color.FromArgb("#03446a");

         }

     }

 }

}

Dani_S 4,501

using this button on click omn menu

private void OnUploadClicked(object sender, EventArgs e)

{

   try

   {

       var page = (Page)Activator.CreateInstance(typeof(UploadPage));

       if (page != null)

       {

           this.Detail = new NavigationPage(page);

           NavigationPage.SetHasBackButton(Detail, false);

           uploadButton.HasSelect = true;

           downloadButton.HasSelect = false;

           inProcessButton.HasSelect = false;

           copyButton.HasSelect = false;

           scanHistoryButton.HasSelect = false;

           logsButton.HasSelect = false;

       }

   }

   catch (Exception ex)

   {

       _logger.Error("OnUploadClicked", ex);

   }

}

Dani_S 4,501

 <CustomControls:MenuButton x:Name="logsButton" AutomationId="button" Text="Page1"  ImageSource="routes_icon.png" FontSize="22"  HorizontalOptions="Start"  VerticalOptions="Center"  ContentLayout="Left,10" Clicked="OnClickedRoutes" />

Dani_S 4,501 Reputation points

2024-04-11T11:46:22.1133333+00:00

Any idea? your prompt answer will be appreciated.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-15T07:46:59.66+00:00

I make a sample but cannot reproduce your issue. From the code snippets, it's not clear about the OnClickedRoutes method and I'm not sure how you call the OnUploadClicked method. In addition, what are the UploadPage and this.Detail?

it happened in the navigation in menu.

it crashes at OnClickedRoutes method, right?

Dani_S 4,501

make two pages route page + upload page.

when you click on button it load route page

<CustomControls:MenuButton x:Name="routesButton" AutomationId="button" Text="Route page" ImageSource="routes_icon.png" FontSize="22" HorizontalOptions="Start" VerticalOptions="Center" ContentLayout="Left,10" Clicked="OnClickedRoutes" />

private void OnClickedRoutes(object sender, EventArgs e)

{

Copy

   try     {         var page = (Page)Activator.CreateInstance(typeof(RoutePage));         if (page != null)         {             this.Detail = new NavigationPage(page);             NavigationPage.SetHasBackButton(Detail, false);            
 routesButton.HasSelect = true;             
 upload Button.HasSelect = false;         }     }     catch (Exception ex)     {         _logger.Error("OnRoutesClicked", ex);     }

}

same to upload page.

<CustomControls:MenuButton x:Name="uploadButton" AutomationId="button" Text="Upload page" ImageSource="upload_icon.png" FontSize="22" HorizontalOptions="Start" VerticalOptions="Center" ContentLayout="Left,10" Clicked="OnClickedUpload" />

private void OnClickedUpload(object sender, EventArgs e)

{

Copy

   try     {         var page = (Page)Activator.CreateInstance(typeof(UploadPage));         if (page != null)         {             this.Detail = new NavigationPage(page);             NavigationPage.SetHasBackButton(Detail, false);            
 routesButton.HasSelect = false;             
 upload Button.HasSelect = true;         }     }     catch (Exception ex)     {         _logger.Error("OnUploadClicked", ex);     }

}

try to navigate beween the pages?

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-16T07:30:57.5333333+00:00

I tested with the code above, but I still cannot reproduce the issue. And I'm confused how you navigate beween the pages. From the code snippets, you create a new NavigationPage (this.Detail = new NavigationPage(page); ) but not navigating pages.

For example: pushing pages to the navigation stack via await Navigation.PushAsync(new page());
Dani_S 4,501 Reputation points

2024-04-16T07:58:57.29+00:00

navigate with = this.Detail = new NavigationPage(page);

The problem solved. Exception thrown from one of pages and I did;nt cautch it.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-16T08:08:54.1433333+00:00

Thanks for your sharing.
Dani_S 4,501 Reputation points

2024-04-16T08:10:10.34+00:00

Thanks you.

Accepted answer

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Your answer

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-11T07:30:07.0133333+00:00

When did you get the crash? Do you get the crash when launching the app? Would you mind sharing the detailed error message including exception code so that I can investigate further? It looks like the exception is on a Windows machine, could you please share the environment information with me?
Dani_S 4,501 Reputation points

2024-04-11T07:59:16.48+00:00

where i can get exception code.

it happened in the navigation in menu.

Do you see any problem with this code: public class MenuButton : Button {
public static readonly BindableProperty HasSelectProperty = BindableProperty.CreateAttached("HasSelect", typeof(bool), typeof(MenuButton), false, BindingMode.OneWay, propertyChanged: HasSelectChanged); public bool HasSelect { get { return (bool)GetValue(HasSelectProperty); } set { SetValue(HasSelectProperty, value); } } public MenuButton() { BackgroundColor = Color.FromArgb("#03446a"); TextColor = Colors.White; //FontFamily = "OpenSans-Semibold.ttf"; Padding = new Thickness(4, 4); WidthRequest = 410; //HorizontalContentAlignment = TextAlignment.Start; } private static void HasSelectChanged(BindableObject bindable, object oldValue, object newValue) { if (bindable != null && newValue != null) { bool IsSelect = (bool)newValue; MenuButton myButton = bindable as MenuButton; if (IsSelect) { myButton.FontAttributes = FontAttributes.Bold; myButton.BackgroundColor = Color.FromArgb("#023654"); } else { myButton.FontAttributes = FontAttributes.None; myButton.BackgroundColor = Color.FromArgb("#03446a"); } } }
}
Dani_S 4,501 Reputation points

2024-04-11T08:13:45.8833333+00:00

using this button on click omn menu

private void OnUploadClicked(object sender, EventArgs e)

{

try { var page = (Page)Activator.CreateInstance(typeof(UploadPage)); if (page != null) { this.Detail = new NavigationPage(page); NavigationPage.SetHasBackButton(Detail, false); uploadButton.HasSelect = true; downloadButton.HasSelect = false; inProcessButton.HasSelect = false; copyButton.HasSelect = false; scanHistoryButton.HasSelect = false; logsButton.HasSelect = false; } } catch (Exception ex) { _logger.Error("OnUploadClicked", ex); }

}
Dani_S 4,501 Reputation points

2024-04-11T08:14:04.3166667+00:00

<CustomControls:MenuButton x:Name="logsButton" AutomationId="button" Text="Page1" ImageSource="routes_icon.png" FontSize="22" HorizontalOptions="Start" VerticalOptions="Center" ContentLayout="Left,10" Clicked="OnClickedRoutes" />
Dani_S 4,501 Reputation points

2024-04-11T11:46:22.1133333+00:00

Any idea? your prompt answer will be appreciated.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-15T07:46:59.66+00:00

I make a sample but cannot reproduce your issue. From the code snippets, it's not clear about the OnClickedRoutes method and I'm not sure how you call the OnUploadClicked method. In addition, what are the UploadPage and this.Detail?

it happened in the navigation in menu.

it crashes at OnClickedRoutes method, right?
Dani_S 4,501 Reputation points

2024-04-15T08:50:08.7033333+00:00

make two pages route page + upload page.

when you click on button it load route page

<CustomControls:MenuButton x:Name="routesButton" AutomationId="button" Text="Route page" ImageSource="routes_icon.png" FontSize="22" HorizontalOptions="Start" VerticalOptions="Center" ContentLayout="Left,10" Clicked="OnClickedRoutes" />

private void OnClickedRoutes(object sender, EventArgs e)

{

Copy

try { var page = (Page)Activator.CreateInstance(typeof(RoutePage)); if (page != null) { this.Detail = new NavigationPage(page); NavigationPage.SetHasBackButton(Detail, false); routesButton.HasSelect = true; upload Button.HasSelect = false; } } catch (Exception ex) { _logger.Error("OnRoutesClicked", ex); }

}

same to upload page.

<CustomControls:MenuButton x:Name="uploadButton" AutomationId="button" Text="Upload page" ImageSource="upload_icon.png" FontSize="22" HorizontalOptions="Start" VerticalOptions="Center" ContentLayout="Left,10" Clicked="OnClickedUpload" />

private void OnClickedUpload(object sender, EventArgs e)

{

Copy

try { var page = (Page)Activator.CreateInstance(typeof(UploadPage)); if (page != null) { this.Detail = new NavigationPage(page); NavigationPage.SetHasBackButton(Detail, false); routesButton.HasSelect = false; upload Button.HasSelect = true; } } catch (Exception ex) { _logger.Error("OnUploadClicked", ex); }

}

try to navigate beween the pages?
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-16T07:30:57.5333333+00:00

I tested with the code above, but I still cannot reproduce the issue. And I'm confused how you navigate beween the pages. From the code snippets, you create a new NavigationPage (this.Detail = new NavigationPage(page); ) but not navigating pages.

For example: pushing pages to the navigation stack via await Navigation.PushAsync(new page());
Dani_S 4,501 Reputation points

2024-04-16T07:58:57.29+00:00

navigate with = this.Detail = new NavigationPage(page);

The problem solved. Exception thrown from one of pages and I did;nt cautch it.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2024-04-16T08:08:54.1433333+00:00

Thanks for your sharing.
Dani_S 4,501 Reputation points

2024-04-16T08:10:10.34+00:00

Thanks you.

Answer 1

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Microsoft External Staff

Hello,

As you said, it caused by an exception thrown from one of pages that you didn't catch it.

Thanks for your sharing.

Best Regards,

Wenyan Zhang

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