Recent questions tagged C#

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c# - Multiplying a double value by 100.0 introduces rounding errors?

This is what I am doing, which works 99.999% of the time: ((int)(customerBatch.Amount * 100.0)).ToString() ... web server in 64-bit. 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# - Using AutoMapper to merge objects

I'm attempting to use AutoMapper to merge data from multiple objects, and I'm running into a couple issues that I ... (in this example, Key). 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 iterate through Excel Worksheets only extracting data from specific columns

How do you iterate through an excel workbook with multiple worksheets only extracting data from say columns "C", ... , any help is 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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c# - How to check programmatically whether a managed assembly is x86, x64 or AnyCPU?

I need to determine programmatically whether an assembly is x86, x64 or AnyCPU? There is an almost identical ... someone finds it useful. 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 design a cool semi transparent splash screen?

I am trying to design a semi transparent screen as Adobe Photoshop's and visual studios semi transparent welcome ... me.. 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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359 views

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c# - Unexpected RegexStringValidator failure in ConfigurationProperty in custom ConfigurationElement

I am writing my own custom configuration section and have a ConfigurationProperty defined in a ConfigurationElement ... appreciated. 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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812 views

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c# - iTextSharp for PDF - how add file attachments?

I am using iTextSharp to create a PDF document in C#. I would like to attach another file to the ... being properly attached. 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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c# - Finding contour points in emgucv

I am working with emguCV for finding contours essential points then saving this point in a file and user redraw ... = grayImage.ToBitmap(); } 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# - Encryption libraries?

I have been tasked with implementing a PKI library in C# for a company project, and have been unable to find a ... can hope, right?) 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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c# - Create generic List<T> with reflection

I have a class with a property IEnumerable<T>. How do I make a generic method that creates a new List<T> ... where is T type can be anything See Question&Answers more detail:os...

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

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510 views

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c# - Should I call Parameters.Clear when reusing a SqlCommand with a transation?

I'm coding a transaction manually in ADO.NET. The example I'm working from reuses the SqlCommand which seem like a ... .Message); } } } } See Question&Answers more detail:os...

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

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404 views

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c# - How to read processing instruction from an XML file using .NET 3.5

How to check whether an Xml file have processing Instruction Example <?xml-stylesheet type="text/xsl" href="Sample.xsl" ... help me to do 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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c# - Showing image in a DataGridViewImageColumn binding text-field

I'm working on a WindowsForm project and in my form I have a DataGridView with a DataGridViewImageColumn which ... showing the right image? See Question&Answers more detail:os...

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

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501 views

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c# - linq & distinct, implementing the equals & gethashcode

so I'm trying to make this work and I can't seem to know why it doesn't work demo code; namespace ... anyone could spot my error(s) ? See Question&Answers more detail:os...

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

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588 views

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c# - An existing connection was forcibly closed by the remote host in WCF

I have an abstract class called 'Template' defined as: [DataContract] public abstract class Template { [DataMember] ... method using unit test. 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# - Entity Framework - "Unable to create a constant value of type..." exception

Can somebody help me resolve this exception: Test method KravmagaTests.Model.Entities.StudentTest.Create_Valid_Student threw ... Thanks a lot. See Question&Answers more detail:os...

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

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362 views

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c# - How can I connect to a SDF database? No connection string I try seems to work

I've tried literally 50+ different attempts at my connection string for my local database and nothing seems to work. I' ... EventArgs e) { } } } See Question&Answers more detail:os...

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

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993 views

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c# - Draw rectangle when mouse dragged using MVVM in WPF

Below is my xaml. I have an image inside a canvas. I want to draw rectangle on the image when mouse is ... required in XAML. Thanks in advance. See Question&Answers more detail:os...

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

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504 views

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c# - DateTime.ParseExact string format exception

I am trying to convert a string into datetime with the following C# code, DateTime dTo = DateTime.ParseExact(dateTo, " ... 01/2010 and 1/1/2010? See Question&Answers more detail:os...

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

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496 views

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c# - Having the application minimize to the system tray when button is clicked?

How can I have my application minimize itself to the system tray in WindowsXP/Vista? I'm also looking for a way ... lines in the pop up balloon? See Question&Answers more detail:os...

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

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320 views

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c# - Getting "The source file is different from when the module was built."

I'm trying to debug an ASP.Net web project that I received. I modified a class in the "Apps_LocalResources" folder ... 't copy them over. 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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401 views

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c# - MVC4 API on Azure WebSites or Azure Cloud Services [Error] : 'System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption'

I am getting this error when I try to deploy my Web API project to both Cloud WebSites and Cloud Hosted ... solution. Thanks of any help. See Question&Answers more detail:os...

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

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451 views

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c# - Any way to make XmlSerializer output xml in a defined order?

Currently I'm using XmlSerializer to serialize and deserialize an object. The xml is generated in an undefined order which is ... (C# .net 2.0) See Question&Answers more detail:os...

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

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364 views

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c# - Getting value from a Gridview cell

I'm trying to get an int value from a GridView. Here is the screenshot of my gridview. Here is the asp ... .com/yzLR7s2w A thanks in advance See Question&Answers more detail:os...

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

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557 views

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c# - Is there a way to get a string path reference to an embedded resource file?

I have a method that takes a string parameter that is a file path to a text file. I want to be able ... path for opening a StreamReader? 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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377 views

1 answer

c# - Using WIC to Quickly Create Scaled Down Bitmap that honors EXIF Orientation Tag

I'm looking for the fastest way to create scaled down bitmap that honors EXIF orientation tag Ref :https://weblogs.asp. ... 270)); break; } } } See Question&Answers more detail:os...

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

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450 views

1 answer

c# - Why am I getting "The type parameter must be invariantly valid..." error?

I'll attempt to shorten this code example: public interface IThing { //... Stuff } public class Thing1 : ... a pride/curiosity issue. 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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369 views

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c# - How can I call a local function inside a LINQ query?

I tried: var doctorPractise = from d in db.DoctorsPrivateClinics where GetDistance(db, d)<1.0 select d; But this ... must be less than 1 Km See Question&Answers more detail:os...

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

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