Recent questions tagged C#

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c# - ContactManager.RequestStoreAsync() throws System.UnauthorizedAccessException

I am trying to use the ContactManager class in the Windows 10 Universal apps API. I am trying to do this on a ... ); } } return listResults; } 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# - Basler USB Camera byte buffer to image conversion

I have Basler acA3800 USB camera. IGrabResult grabResult = camera.StreamGrabber.RetrieveResult(5000, TimeoutHandling. ... clear 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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c# - How and where the TCP connection has been created in httpwebrequest, and how is it related to servicepoint?

I am trying to find out when the TCP connection has been established while using HttpWebRequest, how these ... } return connectStream; } 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 enable Cross-Origin Resource Sharing in .Net Console Application WCF Service?

I have a .netframework(4.5.2) Console Application which have RESTful WCF Service. I have a problem with using ... > { return receiptJson; }); 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 replace the HeaderCells of a DataGridView with custom headers?

When to replace a DataGridViewColumnHeaderCell with a custom HeaderCell (here: CustomDataGridViewColumnHeaderCell), when the ... column headers. 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# - Change file LastWriteDate in Compact Framework

FileSystemInfo.LastWriteTime property is readonly in CF. Is there an alternative way to change that date? 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# - Populate object where objects are reused and arrays are replaced?

Using Json.NET, I'd like to map a JObject onto a .NET object with the following behavior: For (non- ... way to achieve both requirements here? 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 we can reduce the resolution of myProcess.TotalProcessorTime?

I'm using TotalProcessorTime to mesure time speding by a method in cpu. for(int i=0;i<10;i++){ double s ... values 0 15,6001 32,0002 ? 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# - Remove blue colored row from DataGridView WinForms

When I fill a DataGridView row by row (calling it's add function), the top row gets blue colored. It's ... { textBoxPartySearch.Focus(); } } 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# - AsyncTask with a Updatepanel?

Yo, i have created a WebProject to test if its possible to create a asyncTask to update a Progressbar: public partial ... But it doesnt 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# 4.0 - The source of the report definition has not been specified

I'm using the following code with which I'm trying to SetParametr : var report = new ReportParameter[1]; ... definition has not been specified 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# - Digitally sign using client certificate in ASP.Net

I am trying to digitally sign information with a private key. I know how to do this on in a desktop client ... to be done on the client? 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# - Order of sheets in Excel file while reading with GetOleDbSchemaTable

I am using an ACE.OLEDB as below to read an excel file in C#. My Excel file has the following Sheets and in ... new DataSet(); ada.Fill(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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589 views

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c# - Oracle ODP.Net and EF CodeFirst - SaveChanges Error

Could someone help me with this: The code: Role r = new Role { ID = 1, Name = "Members" }; ctx.Roles. ... so I'm wondering what's wrong here. 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# - System.Timers.Timer timer1_Elapsed not firing! Help!

I am creating another windows service and my timer is not ticking and I have no idea why! I am using system ... problem? Thanks in advance! Bex See Question&Answers more detail:os...

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

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391 views

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c# - Why is the TextBlock not the OriginalSource on the Routed Event?

I'm showing a context menu for elements in a ListView. The context menu is attached to the TextBlocks of the ListView as ... (); })); } } } See Question&Answers more detail:os...

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

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476 views

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c# - Run script file on remote server

I'm tasked with automating an internal process. This process involves first being logged on a remote server (A). ... Thanks you for your 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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458 views

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c# - Entity Framework 6 Custom Relationship Convention

I have read this documentation about convention in Entity Framework 6. But it does not contain convention for Relationship. ... (EF 6 alpha 3)? See Question&Answers more detail:os...

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

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586 views

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c# - Change backgorund of button in wpf when it has focus

I have a button and I want to change the background color of button. but when I set the background property ... white color to another color? See Question&Answers more detail:os...

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

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498 views

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c# - clientStream.Read returns wrong number of bytes

This code works: TcpClient tcpClient = (TcpClient)client; NetworkStream clientStream = tcpClient.GetStream(); byte[] ... the number of bytes) See Question&Answers more detail:os...

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

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712 views

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c# - System.Data.SqlClient.SqlException: Timeout expired

Coupled days ago I noticed that my web application giving me sql an exception timeout expired. I ... step, Boolean& completedSynchronously) See Question&Answers more detail:os...

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

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456 views

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c# - How to recursively Iterate over properties of an Entity

Suppose this is what I have in my database table Ancestor ( idAncestor int not null, name varchar(20) not null, ... the type, and so on. 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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565 views

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c# - How to show progress bar in windows application?

I am working on a windows application using c#. I have a form and a class having all methods . I have a method in ... bar which is in form } } } See Question&Answers more detail:os...

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

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625 views

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c# - Overriding abstract property using more specified return type (covariance)

class Base {} abstract class A { abstract public List<Base> Items { get; set; } } class Derived : Base {} ... Items. How can i make that 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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519 views

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c# - Create instance of class and call method from string

String ClassName = "MyClass" String MethodName = "MyMethod" I would like to achieve: var class = new MyClass; ... string, any help 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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657 views

1 answer

c# - UWP: AES encryption and decryption

I had a simple class to do some basic local encryption for Windows Phone 8. I wanted to use the class again ... UWP Windows 10 apps? 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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634 views

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c# - Invalid request BLR at offset 258 , function HASHMD5 is not defined?

I am using Firebird 2_5 database with c#, at inserting data into Firebird databse i have this error please how ... error code 335544932 found" ' See Question&Answers more detail:os...

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

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665 views

1 answer

c# - How to color different words in a RichTextBox with different colors?

How to color sections of a RichTextBox differently? string text = "a b c d teste"; // words to highlight string[] word ... x] //How I 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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