Recent questions tagged C#

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c# - Store Byte[] in Access 2010

Such a simple task: How to store a Byte[] in Access 2010? (Searching the web all day long about this.) I ... .NET Thanks for your help guys. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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302 views

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c# - Custom entities with asp net identity (one-to-many)

When I load a user using the User Manager private UserManager<MyUser> GetUserManager() { var userStore = new UserStore< ... { get; set; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Unable to retrieve metadata - MVC application

I was following this to create a simple MVC application. After creating the model, when I tried to add ... SqlClient" /> </connectionStrings> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Encrypt column data with LINQ

I was wondering if there is easy solution to this or I'm stuck with following: When updating DB: dti.Pass = Crypter ... I'm wondering if it is. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Saving a Class to disk on dispose: Does my code have bugs?

I am attempting to make a simple class that serializes itself to disk when it is no longer in use. The code I ... ; } this.disposed = true; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to get rid of StackOverflow Exception in DataContext InitializeComponent?

I am new to wpf c#, trying some sample application, the problem is when I mention DataContext in xaml the ... Action<object>(ShowEmployees)); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Behavior of DependencyProperty With Regards to Multiple FrameworkElement Instances

So I tried using DependencyProperty to solve my issues with regards to passing the local ViewModel across child ... of the said UserControl? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - string value is Empty when using FromBody in asp.net web api

I am using asp.net core web api. below is my simple post function which is having a single string parameter. ... JsonResult("Hello World"); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Correct way to use OneDrive API to sync files

I can't find any documentation that outlines the correct way to use OneDrive to store and keep app files ... ; } return objectFromXML; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

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c# - save an image from ink canvas

I am trying to save an image from ink canvas however it does not create any file after saving, this is my ... to be generated is not there. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - MySql.Data.MySqlClient.Replication.ReplicationManager throws an System.TypeInitializationException

I'm having trouble with my code to access a MySQL Database. Everytime I try to open my connection, a ... Windows 10 everything worked fine. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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c# - "Specified cast is not valid" error

I'm using this code which is meant to check the text in webBrowser1, although instead I'm getting ... { backgroundWorker1.RunWorkerAsync(); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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420 views

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c# - DataGrid row selection not working when padding is added to cells

DataGrid control in WPF is behaving weird. When I click on a row it should be selected. There is a problem ... transparent. WPF is crazy weird. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

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c# - xamarin.ios implement PageController with images only code

i'm developing an ios app with xamarin, only code, without StoryBoard, or any designer. i need to implement a ... or some example to show me? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

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c# - Random number generator returning zeros

I have an ASP.NET application that relies on the Random class to generate a pseudo-random string. It uses ... wrong would be much appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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440 views

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c# - Entity Framework defaultConnectionFactory for MySQL

The below configuration works fine when I specify the connectionString name as a parameter to the base constructor. Because I ... .EF6 6.8.3.0. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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350 views

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c# - How should I handle my Entity/Domain Objects using IoC/Dependency Injection?

I'm currently using PLINQO to generate all my Entities from the database. Recently, I've started to use dependency ... a scenario like this? TIA See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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707 views

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c# - How can I get the mouse coordinates related to a panel?

I am trying to get the coordinates of a click with the mouse in C# related to a panel in my form, ... have any experience with events. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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587 views

1 answer

c# - ASP.NET Core Sharing Identity Cookie across azure web apps on default domain (*.azurewebsites.net)

Having trouble sharing an Identity Cookie (using ASP.NET Core v2) across multiple web applications On my ... Maybe for Security purposes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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290 views

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c# - Does a generic function implicitly cast value types to objects when checking for null?

For example the following code demonstrates my line of thought: class Program { static void Main(string[] args) { int i ... = (object)i == null; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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591 views

1 answer

c# - How do INSERT INTO Firebird, with autoincrement for the primary key?

How do INSERT INTO Firebird, with autoincrement for the primary key? For the table fields I have: fstPriority ... the Visual Studio compiler. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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761 views

1 answer

c# - Entity Framework and DbContext - Object Tracking

I am a bit confused on the usage of DbContext in Entity Framework. Here's the scenario I'm confused about. ... reload all of the entities. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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603 views

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c# - MediaElement not playing audio from stream WP7

string url = re["response"][0]["url"].ToString(); MediaElement mm = new MediaElement(); mm.Source = new ... not starts.How I can resolve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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367 views

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c# - How can we create, write and read an excel file for Windows Phone 8

I have created the file and written some data on it. When I look for created file in ... True&sort=Position&view=Expanded&spc=None&fr=11#xx0xx See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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370 views

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c# - LIstbox Selected Item content to textblock

I am sure there is a simple solution to this, but I can't seem to find it at the moment. I am trying ... didn't work either. Any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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783 views

1 answer

c# - Sending files over FTPS (secure) using WinSCP .NET assembly

What is required to send out files to a server with WinSCP (.NET assembly) using FTPS (Secure)? I've been ... this whole thing just eludes me. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

1 answer

c# - Get Total Count and Page Rows in same database trip when using Entity Framework

I am currently using the following method to get a page of customers as well as the total count. The only problem ... of USING }//END of METHOD See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

1 answer

c# - Linq to DataTable - Cannot cast DBNull

New to Linq, so apologies if this is basic. This query is throwing up the error {"Cannot cast DBNull.Value ... difference I'd be interested. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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