.net 4.5

I work on csharp i get error object reference not set to an instance of an object code give me error var Data = result.items.Select(e => new { PartID = e.create._id, IsUpdated = e.create.error != null && e.create.error.reason !=null && !e.create.error.reason.Contains("document already exists")...

Hello everyone. I will be grateful for your kind help on this one. I am trying to transfer a specific listview column items to a listbox in C#. Heres my effort below. Unfortunately my code rather iterates though only the entry of the specified column and splits it as letters into the listbox...

Hello, I have a database in Access with this architecture: and I need with Linq to calculate and return the total price of a candidate’s training knowing that only the candidate who has attended at least 5 trainings gets a 20% discount. how to get this result with linq?

Problem Error display in linq query "specific cast is not valid" at System.Data.DataRowExtensions.UnboxT`1.ValueField(Object value) at System.Data.DataRowExtensions.Field[T](DataRow row, String columnName) LinqQuery give error var query1 = (from x in table1.AsEnumerable()...

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.Net.Sockets; using System.IO; using System.Threading; namespace newClient { class Connection { //Thread _threadObj; TcpClient _TcpObj...

I have encountered an issue while upgrading an application from .Net Framework 3.5 to latest version with .NET Framework 4.5.1. I came into a situation, where one application is using a logger assembly built with .NET framework 3.5, another application(built on 4.5.1) tries to uninstall same...

:mask: I want to print the the product of digits in a number using the following code. Plz view the following code and find me the error in it and help me to solve it in 2 different ways using static method and also in general manner using do while loop in the main method namespace Prime2 {...

We're software and hardware company, which oriented on international market more that 12 years. Our company is expanding and we are looking for new employees to our friendly staff. Our office is located in the center of Kiev, capital of Ukraine. And it doesn't matter where you are from, we will...