Recent questions tagged .NET

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.net - How to read Excel cell from VB.Net

How can I read specific cell from Excel file using OLEDB Connection with VB.NET? Can you show me sample code? See Question&Answers more detail:os...

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

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.net - P/Invoke a purely C++ library?

Is it possible to P/Invoke a pure C++ library, or does it have to be wrapped in C? See Question&Answers more detail:os...

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

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.net - C# Excel file OLEDB read HTML IMPORT

I have to automate something for the finance dpt. I've got an Excel file which I want to read using ... a instanciated Excel? Regards, Michel See Question&Answers more detail:os...

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

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.net - Is ClickOnce still the way to go for Windows Forms application deployment?

Is ClickOnce still the way to go for Windows Forms application deployment? I've just been looking for books ... remain across upgrades of course See Question&Answers more detail:os...

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

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.net - ASP.NET Development Server concurrent processing doesn't work

I'm trying to find out why ASP.NET Development Server is not processing the requests concurrently. So I' ... the requests process concurrently? See Question&Answers more detail:os...

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

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775 views

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.net - How do I stop an empty tag from being emitted by XmlSerializer?

I have an object like this, public class UserObj { public string First {get; set;} public string Last {get; ... to output this empty tag? 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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.net - Application_Error does not fire?

In Webform1.aspx.cs: protected void Page_Load(object sender, EventArgs e) { throw new Exception("test exception") ... an exception is thrown? See Question&Answers more detail:os...

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

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.net - Using UpdateResource in C#?

I'm trying to change the icon of external executable programmatically. I've googled and found much information about ... ? Thank you very much. See Question&Answers more detail:os...

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

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.net - C# HttpListener The format of the specified network name is not valid

I have this tiny piece of code where I try to add prefixes for my HttpListener: listener = new HttpListener(); ... I forgot about or might try? See Question&Answers more detail:os...

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

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.net - Do access modifiers affect reflection also?

I always believe they did, but seeing some answers here make me doubt... Can I access private fields/ ... outside a class through reflection? See Question&Answers more detail:os...

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

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.net - Winforms Crystal Report - "Failed to load database information" error

I have developed a small crystal reports win forms application that connects to an Access DB in the local network ... Appreciate 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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.net - WIX Toolset How to Set a Property

This seems like it should be intuitive, but so far its been anything but. How do I simply set a property I have ... I am using Wix 3.9 R2 See Question&Answers more detail:os...

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

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.net - ASP.Net error - type is not compatible with the type of control

I have a web site i created using VS2012 web edition, Running a VB.net asp web site, In the VS2012 debug/release ... page...) work's 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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.net - Force Windows to show a system tray icon

This is a pretty stupid question, but here goes: Is there a way (in .net) to force Windows to show your ... to be visible in the system tray. See Question&Answers more detail:os...

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

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847 views

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.net 4.0 - Operation not allowed on non-connected Sockets - C# 4.0

It keeps having an error "Operation not allowed on non-connected sockets" on the line var ServerStream = ... Credentials, 0, buffersize); See Question&Answers more detail:os...

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

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769 views

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.net - Open WinForm from WPF application?

I've created an WPF and WinForm Application, what i need to do is open the WinForm from the WPF application. ... you could help me. 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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931 views

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.net - Alternative to Thread.Sleep in C#?

I have a code which when run, it executes series of lines in sequence. I would like to add a pause in ... execute while waiting for 3 hours. See Question&Answers more detail:os...

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

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.net - MemoryStream must be explicitely be disposed?

As MemoryStream is an unmanaged resource does it always have to be disposed? Given: 1) A method is invoked. 2 ... -block (or using-statement)? See Question&Answers more detail:os...

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

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.net - Large Object Heap fragmentation: CLR has any solution to it?

If you application is such that it has to do lot of allocation/de-allocation of large size objects (> ... limitation of CLR memory management? 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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.net - Metro app - ListView - how to alternate background colour of ListViewItems

In my Metro style app for Windows 8, I'm binding a Listview to an ObservableCollection and I would like ... every time the collection changes. See Question&Answers more detail:os...

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

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708 views

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.net - Possible to call a managed DLL from unmanaged C++?

Is it possible to call CLR DLL (one for example which is made with C#) from unmanaged C++ code? I need a DLL ... that is built with C++ / CLI? See Question&Answers more detail:os...

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

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852 views

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.net - PowerShell - Why "Divide By Zero Exception" is not being Caught?

On my Machine each one of the following code snippets throws and exception instead of printing to the standard output " ... finally { write 2 } See Question&Answers more detail:os...

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

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.net - Read XElement from XmlReader

I'm playing around with parsing an XMPP XML stream. The tricky thing about the XML stream is that the ... = XElement.Parse(outerStanza); See Question&Answers more detail:os...

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

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674 views

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.net - Do you need 2 instances of Azure websites for SLA like Web Roles?

On cloud services web roles you must create at least 2 instances to get Azure's 99.95% SLA because when they do ... that a thing of the past? See Question&Answers more detail:os...

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

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788 views

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.net - Why does log4net 1.2.10 require System.Web?

I'm writing this code in a Console Application targeting the .NET Framework 4 Client Profile. this.container.AddFacility ... task on a server? See Question&Answers more detail:os...

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

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1.4k views

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.net - entity framework 6 - check if record exists before insert and concurrency

I have the following scenario: A business logic function that uses ef6 checks if a record already exists. If the ... don't want. Thank you. See Question&Answers more detail:os...

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

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928 views

1 answer

.net core - Error Could not load type System.Data.OleDb.OleDbConnection from assembly System.Data when using Scaffold-DbContext, EntityFrameworkCore.Jet, .NetCore

I am trying to use Scaffold-DbContext from Entity Framework Core to create Models from an existing MS Access ... help would be 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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1.4k views

1 answer

.net - C# timer (slowing down a loop)

I would like to slow down a loop so that it loops every 5 seconds. In ActionScript, I would use a timer and a ... would I go about it in C#? See Question&Answers more detail:os...

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

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