C# - Microsoft Q&A

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MemberNotNullWhen() attribute won't work with properties in the base class?

I have a method that guarantees a property is not null when the method returns true. [MemberNotNullWhen(true, "CurrentLine")] public bool Read() { } This works fine. But I also have a class that derives from this class, which has a method…

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Jonathan Wood 11

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Paul (Purple Piranha Limited) 0

2 answers

i am opening my pdf which is in local folder in iframe I want to disable printing option in it like user should not able to print or save or right click the pdf but when i disable it, the scrolling inside the iframe is not working

function openBook(bookId, bookPath) { // Encode the bookId and bookPath to avoid URL issues var encodedBookId = encodeURIComponent(bookId); var encodedBookPath = encodeURIComponent(bookPath); // Set the iframe source to load the book var…

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Ashraf Khan 40

commented

Jiale Xue - MSFT 49,126 Microsoft External Staff

1 answer

WPF PrintDialog: How to Enable and Detect Selected Page Print Feature?

Our WPF application targets .NET 4.8. The WPF application can generate run report which include 12 pages. run report allows print. So far there is no option, and it always prints all 12 pages. we like to add feature to allow select page numbers and only…

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Jane Jie Chen 486

edited an answer

Hongrui Yu-MSFT 5,010 Microsoft External Staff

1 answer

Way to retreive the mails

Hi, Is it a good way to use SmtpServer and retrieve all of the mails (of a period) to one mail account? And get all of the details of the mails?

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Peter_1985 2,711

edited an answer

Jiale Xue - MSFT 49,126 Microsoft External Staff

1 answer

Cannot Assign x:Name to Elements Inside ContentControl in WPF UserControl

Hello, I have created a UserControl in WPF that contains a ContentControl. This ContentControl can accept any external content (Grid, StackPanel, TextBox, etc.). However, when I use the UserControl in another page and try to assign x:Name to elements…

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fatih uyanık 200

commented

Hongrui Yu-MSFT 5,010 Microsoft External Staff

1 answer

Error when calling a SOAP servie using "OperationContextScope" is failing while succeed on PostMan

I want to make a call to external SOAP service, now the call works well inside Postman, as follow:- But when i tried to do the call inside our .net core 8.0 application i got "Server Error", here is the code:- private async…

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john john Pter 885

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john john Pter 885

1 answer

How to write C# based Azure Container without starting a Web

Hi all. I need to write an app that connects to a third-party vendor application via a Web Socket. I am using C# in Visual Studio 2022 to write my app. I have it running in my Visual Studio locally. My question: how do I suppress the website window from…

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Leonard Bernstein 85

accepted

Leonard Bernstein 85

1 answer

Ho to control "Microsoft.Azure.WebJobs.Script.WebHost.Middleware.SystemTraceMiddleware" logs being sent to my Datadaog?

We have integrated the datadog for capturing the azure function application insights logs. Its taking too much of our datadog resources. How to control that? I tried many methods like putting different values in the host.json, But nothing is…

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Vijayasundhar Nanjundan 0

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Pravallika Kothaveeranna Gari 240 Microsoft External Staff

1 answer

Entity Framework v8, on SaveChangeAsyc() intserts record twice

public async Task AddAsync<T>(T entity) where T : class { await _dbContext.Set<T>().AddAsync(entity); // use only context and test await _dbContext.SaveChangesAsync(); } On SaveChangesAsync() 1 duplicate record is inserted.

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Reema George Dass 20

commented

Hongrui Yu-MSFT 5,010 Microsoft External Staff

2 answers

Microsoft Extensibility SDK for C# for SQL Server

https://learn.microsoft.com/en-us/sql/language-extensions/tutorials/search-for-string-using-regular-expressions-in-c-sharp?view=sql-server-ver16 As mentioned in the above link carried out all the steps. However when I execute below command I am getting…

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Tarale, Sandeep 0

commented

Hongrui Yu-MSFT 5,010 Microsoft External Staff

1 answer

NetworkStream read abends application

I am running into an issue where a read abends my application. Is there a way to handle it in a more soft way so I get the error data, but have it not stop my application. Is it a simply case of changing the LogError functions to a LogInfo? It is…

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Brown, Matt 106

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Michael Taylor 57,216

1 answer

WPF: Why BackgroundWorker.RunWorkerCompleted Event() throw an exception and main thread does not receive it?

Our WPF application targets .NET 4.8. The AbortableBackgroundWorkder class inherences from the BackgroundWorker class and used as following. there are two background workers: _protocolProcessorBackgroundWorker..DoWork() will call …

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Jane Jie Chen 486

accepted

Jane Jie Chen 486

5 answers

Custom fonts not working when uploading Maui Android project to Play Store

I have added custom fonts in the font directory of my Maui project's Resources directory and updated the MauiProgram.cs file accordingly. The fonts work fine when I deploy the application using Visual Studio, but when I publish the app and upload it to…

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Mujtaba Ali Panjwani 25

answered

Max Borrmann 5

1 answer

SSIS Script Task: Split a JSON array into a list

I have a JSON array of the form: "data": [ {"tag1": 1,"tag2": 2,"section1": {"tag3": "Dummy"},"tag4": 3,"array1": ["dummy","dummy"]}, {"tag1":…

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Peter Bishop 181

answered

Jiale Xue - MSFT 49,126 Microsoft External Staff

1 answer

Filter on Guid for AppRoleAssignedTo.PrincipalId does not seem to work as expected

See: https://github.com/microsoftgraph/msgraph-sdk-dotnet/issues/2306 Describe the bugUsing C# SDK nuget package Microsoft.Graph 5.40.0. Any time we try to create a filter like var userId = "<GUID VALUE>"; if(!Guid.TryParse(userId,…

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Charles Laymon 25

commented

Charles L 86

1 answer

'The instance of entity type 'Book' cannot be tracked' Error in Entity Framework and Displaying Uncommitted Changes in the UI

Hello, I encountered the following issue while working on my C# WPF project: I make updates to an entity on the UI side but do not send these changes to the database. Later, when listing the entity objects I updated on the UI side, I noticed that…

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fatih uyanık 200

commented

Hongrui Yu-MSFT 5,010 Microsoft External Staff

1 answer

Linq Cosmos DB ArgumentNullException Exception

I am using LinQ on the client side to query Cosmos DB. All the other properties work fine except two properties. One is the "id" and the other is the "RowKey". I manually checked the database, the type of RowKeys are all string, they…

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Yi Gu 0 Microsoft Employee

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Yi Gu 0 Microsoft Employee

1 answer

WPF C# fitting different Screen Sizes

Hi, I'm coding a nice smart tiny app :) and coding on a desktop PC - yesterday Im starting to test a release version and create a setup project - already done. For testing I put the setup file on my old notebook - and ahhhhhhh can't believe it. My…

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Jim Jupiter 60

accepted

Jim Jupiter 60

0 answers

How to set clipboard data with the image that is not local when setting?

Hi, I'm trying to implement a feature, "copy" operation in my web APP will call C# dll API to set the image files data into clipboard, the image files don't exist locally, when user do "paste" operation, the app downloads the image…

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kai xiong 21

commented

Jiale Xue - MSFT 49,126 Microsoft External Staff

1 answer

SSIS DT_TEXT column contains alternating CHAR(0) characters

I have an SSIS package that is pulling JSON data from a REST source. This was originally pulling data as (DT_STR, 8000, 1252) and writing to a [varchar] column but we have started getting a couple of values than will not fit. I have changed the source to…

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Peter Bishop 181

commented

Jiale Xue - MSFT 49,126 Microsoft External Staff

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