Recent questions tagged C#

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c# - DataGridView Preserve Selected Index and Scroll Position after update and reload

I have some problem, don't now how to preserve the scroll position in a DataGridView. I have over 1000+ ... edited row after refreshing data? 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# - SimpleIoc.Default.Register fails at IsInDesignModeStatic if the Interface is in different assembly

In the static constructor of ViewModelLocator class the SimpleIoc.Default.Register<T>(); fails at IsInDesignModeStatic mode, if ... ); } ... } 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# - Restarting a task in the background if certain errors occur

I am using some REST requests using Mono.Mac (3.2.3) to communicate with a server, and as a retry mechanism ... using a factory of some sort? 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 convert binary to string?

static List<int> ConvertTextToBinary(int number, int Base) { List<int> list = new List<int>(); while (number!=0) ... eg: 1101000 is equal to h. 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# - Color Table Algorithm

I've been searching for just over a week now on how to create something like this. I have the code and for ... use the built in color dialog.) 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# - Mocking insert query to a MySQL Database using Moq

I am currently trying to learn Mocking with Moq, and I wanted to try it on an existing database that I have ... on how to approach this problem. 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 avoid the View being disposed

I'm using a ContentControl im my WPF application to show different Views to the user. <ContentControl Content=" ... to be deleted/discarded? 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 use sql parameters for a select query?

I need to fetch the records based on a 'like' match against a set of records, The below query im using ... declare the scalar variable "@Name". 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 can i download a website content to a string?

I tried this and i want that the source content of the website will be download to a string: public partial ... source content in a string. 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# - Could not load type Microsoft.Office.Interop.Excel._Application

I'm getting a error when I try to debug a code that reads Excel files. I'm wondering if the reference to 'Microsoft ... excel file", ex); } } 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# - MapPolyline not being drawn

I am trying to use a MapPolyLine in my Map to show a real-time route, hopefully it will move/scale this time. ... the map as a graphic glitch: 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# - FormBorderStyle.None removes the native open effect of windows 8

I like to have my form borderless in C#. So I used this code: FormBorderStyle = FormBorderStyle.None; But it ... i bring the aero effect back? 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# RSA extract public key from private key

Is there a way to extract public key from private key in c#? Becouse if i do ToXMLString() then i can ... to extract public key from private? 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# - .net post form in code behind

I wanna make a post form in code behind. I have simple html post is working but when I try make it ... reader.ReadToEnd(); response.Close(); 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 would I sort through an array of structs?

I have a struct containing song data: public struct uLib { public string Path; public string Artist; public string Title; ... to "roll my own"? 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# - Find location of a control in wpf using PointToScreen

I'm trying to find my relative coordinate for a usercontrol inside my mainwindow. I tried using the " ... it Experimenting with PointToScreen. 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# - ToolStripStatusLabel displayed as black box

I use StatusStrip that contains ToolStripStatusLabel. OS - Windows 7, framework 2.0. Usually all displayed normal, but ... how I can fix it? 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# - Regular expression to remove XML tags and their content

I have the following string and I would like to remove <bpt *>*</bpt> and <ept *>*</ept> (notice the ... regex in VB.NET or C# will do. 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# - argumentnullexception bitmap save to memorystream

I'm trying to save my Bitmap to MemoryStream - what wrong in this code? Why it gets me ... .FormTestWord.insertBarCodesToPDF(Bitmap barcode) 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 display rows as columns in DataGridView?

I'm trying to display set of data which have retrieved from the sql database using a datagridview in VS ... data in a datagridview vertically? 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# - Prefix some characters to the property name - JSON Serialization

If I have a class like class A { public int Age {get; set;} public string Name {get; set;} } ... Newtonsoft.Json for my serialization needs. 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# - Custom DataGridView Column duplicates when using it in Designer

I made a custom DataGridView component which has a standard DataGridViewImageColumn inside. A new property changes the ... with the wrong name. 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# - DateTime Conversion and Parsing DateTime.Now.ToString("MM/dd/yyyy hh:mm:ss.fff")

I store some DateTime in a CSV log with: DateTime.Now.ToString("MM/dd/yyyy hh:mm:ss.fff") When I try to ... can I properly re-read the DateTime? 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# - MVC Owin Cookie Authentication - Override ReturnUrl Generation

I have an MVC application using Owin Cookie Authentication. I have SlidingExpiration enabled and working. However, when a ... get it to work. 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# - Replacement for CultureInfo.GetCultures in .NET Windows Store apps

CultureInfo.GetCultures does not exist in the .NET API for Windows Store apps. How could we read all ... easy using CultureInfo.GetCultures. 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# - Use of unassigned local variable: value type vs custom struct

A primitive C# value type, for example int is a struct. So, why is int not initialized? There supposed to ... and shall have the same behavior. See Question&Answers more detail:os...

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

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1.7k views

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c# - Winforms combobox loses autocomplete value on lostfocus

I am having issues with the Winforms combo box losing the value found during an autocompletion when the user tabs to ... item etc. Any ideas? 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# - When do you use code blocks?

When do you use code blocks in C/C++/C#, etc.? I know the theoretical reason behind them, but when ... -use-curly-braces-for-additional-scoping) See Question&Answers more detail:os...

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

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