,.net,,linq,datatable , How to select rows from a DataTable where a Column value is within a List?

How to select rows from a DataTable where a Column value is within a List?



Say you had a table in SQL and you wanted to find all the rows where a particular column could be one of 3 options. You could write something like this:

SELECT * FROM MyTable WHERE uid IN (123, 456, 789)

That's effectively what I want to do with a DataTable in VB. I saw this post: Query rows that the datatable field contain any item in the list<string>

Which seemed to be exactly what I wanted, but it's not working as I expected it to. I basically just used a C# -> VB converter and plugged in my variables and came up with this:

Dim item = From a In dtCodes.AsEnumerable() Where
                lstCodes.Any(Function(x) a.Field(Of String)
                ("Code").ToUpper().Contains(x.ToUpper())) Select a

dtCodes is a DataTable with a column Codes in it. lstCodes is a List(Of String) with some values in it.

item just has all of the rows from dtCodes though, regardless of whether or not their Code column value exists in lstCodes.

What am I missing?

edit; Note that I don't have to use LINQ, if there's an easier or better way.


In the past, I've done this sort of like this:

Dim item = From r as DataRow in dtCodes.Rows 
           Where lstCodes.contains(r.Item("Codes")) 
           Select r

Does that work?


Access manager information from Active Directory

Attach is the picture of active directory, which i got from my IT department. Now i want to get the manager information in C#. NOTE: I am able to get all information of user but there isn't any key of manager, but IT department just gave me above attached...

Catch concurrency exception in EF6 to change message to be more user friendly

I am using EF6.1 and i would like to change the message to a more system specific message when the below exception is thrown. Store update, insert, or delete statement affected an unexpected number of rows (0) Now, my problem is i cannot seem to catch the exception? I have...

Microsoft Band and WPF

I have downloaded the sample code for Band SDK for Windows. Then I added a new WPF project and grabbed the latest SDK through Nuget (Version 1.3.10518.1). Now under packages\Microsoft.Band.1.3.10518\lib, the following folders are contained: netcore451 portable-net45+win+wpa81 portable-win81+wpa81 wpa81 Now as I need .NET 4.5 support I have referenced the...

Related entity not loaded

I'm starting a new entity framework project and I'm defining relations among entities. I defined this simple entities: [Table("db_owner.Students")] public partial class User { [Key] public int Id { get; set; } [Required] [StringLength(50)] public string Name { get; set; } public int? SchoolClassId { get; set; } [ForeignKey("SchoolClassId")] public...

Is Serialization the same as GetBytes?

Java provides a mechanism, called object serialization where an object can be represented as a sequence of bytes. Found this on google. I use .Net to send packets using a socket connection. I use Encoding.Default.GetBytes(). Serialization is confusing, what is the difference of it to GetBytes?...

XElement.Value is stripping XML tags from content

I have the following XML: <Message> <Identification>c387e36a-0d79-405a-745c-7fc3e1aa8160</Identification> <SerializedContent> {"Identification":"81d090ca-b913-4f15-854d-059055cc49ff","LogType":0,"LogContent":"{\"EntitiesChanges\":\" <audit> <username>acfc</username> <date>2015-06-04T15:15:34.7979485-03:00</date> <entities> <entity> <properties> <property> <name>DepId</name> <current>2</current> </property>...

Difference between application and module pipelines in Nancy?

I have seen in the documentation of Nancy, sometimes these two are referred distinctively. And also is there a difference in the Before/After hooks of these two pipelines?... causing issues with Newtonsoft.json

My Windows service is in the same solution as a MVC project. The MVC project uses a reference to SignalR Client which requires Newtonsoft.Json v6 + the Windows service uses System.Net.Http.Formatting, which requires Newtonsoft.Json version I assumed this would not be a problem, as I could just use a...

ASP.NET MVC posting list from view to controller

I have a view model in my ASP.NET MVC application: public class FiltersViewModel { public IEnumerable<SelectListItem> AvailableFilters { get; set; } // fills a drop down menu public IList<TechnologyFilter> TechnologyFilters { get; set; } public IList<ContractTypeFilter> ContractTypeFilters { get; set; } public FiltersViewModel() { this.TechnologyFilters = new List<TechnologyFilter>(); this.ContractTypeFilters =...

Server side session in,web-services,session
I want to set one value in server side session in client side and need to access that session in web service, so i tried below In client side : //Set the server side session like below var vr_="demo.png"; '<%Session["path"] = "' + vr_ + '"; %>'; //In alert,checked the...

Show/hide tinymce with radio buttons

I try to show/hide a tinymce with radobutton. Like yes/no. So there are two radio buttons. yes - will show the tiny mce and no will hide the tinymce. I have this: showing tiny mce: <div class="form-group"> @Html.Label(Resources.Entity.Product.PdfMessage, new { @class = "text-bold control-label col-md-2" }) <div class="col-lg-6 col-md-8 col-sm-10...

deployment of a site and iis

I know this is for some of you a stupid question but for me is a real problem. I have never deployed a site before What i have done so far: 1) publish the site from visual studio to a folder. 2) added to iis for testing everything works great...

Why is my View not displaying value of ViewBag?

I have a little blog application with posts and tags. This is my model for Post: namespace HelloWorld.Models { public class Post { [Required] [DataType(DataType.Text)] public string Title { get; set; } [Required] [DataType(DataType.MultilineText)] public string Description { get; set; } [Required] [DataType(DataType.DateTime)] public DateTime PostDate { get; set; }...

DialogBox with value verifications

For my application which deals with graphics, I've made a little DialogBox to set: Max; Min; Major Step (of the scale); Minor Step. Here's a screen capture: I want to validate a few things before allowing the user to click Ok: Max >= Min MaxScale >= MinScale. But it's not...

Visual Studio Assembly force-installs Target Framework

I have this Assembly targeted at .NET 3.5. The code will work on later versions as well, but I like this to work on Windows XP. I mean, .NET is backwards compatible, right? I can run apps for .NET 3.5 on Windows 8.1. However, when I run my own assembly,...

add BR between text in dynamically created control

I've got a dynamically created List in with the following code: HtmlGenericControl li = new HtmlGenericControl("li"); li.ID = "liQuestions" + recordcount.ToString(); li.Attributes.Add("role", "Presentation"); ULRouting.Controls.Add(li); HtmlGenericControl anchor = new HtmlGenericControl("a"); li.Attributes.Add("myCustomIDAtribute", recordcount.ToString()); anchor.InnerText = "Test " + new HtmlGenericControl("br") + "12345"; li.Controls.Add(anchor); I tried to put in a HtmlGenericControl but...

Formatting large numbers in C#

I am using Unity to make an "Incremental Game" also known as an "Idle Game" and I am trying to format large numbers. For example, when gold gets to say 1000 or more, it will display as Gold: 1k instead of Gold: 1000. using UnityEngine; using System.Collections; public class Click...

WCF service architecture query,architecture,wcfserviceclient
I have an application that consists of a web application, and mutliple windows services, only one windows service is installed depending on what version of the backend sofware is used. Currently, Data is saved by the web app in a database, then the relevant service is installed and this picks...

Capturing group recursively inside non-capturing group?

So I've got the following input: 1,6-10,10000,2,10-11 And the following regex: ^\d+(?:,(\d+|\d+-\d+))*$ in the .NET Regex I want to match each of the groups between the commas but I also want the capturing groups to end up like the following: Group 1: 1 Group 2: 6-10 Group 3: 10000 Group...

Application is missing required files

Pic of Error: Cannot Download the Application. The Application is missing required Files. Contact Application Vendor For Assistance. So I'm building a windows form application using SharpDevelop 5.2 and I'm trying to make a standalone/version someone else would be able to use on another machine. In sharpdevelop (and visual...

Retrieve data from one table and insert into another table

I am trying to retrieve data from one table and then insert it into another table. This is a a sample of the first table in which there is the following data. tb1 is the table which consists of data. The two columns Manager and TeamLeader basically means for example...

Unable to find the auto created Database

I have created simple ASP.NET MVC4 application using EntityFramework Code first approach. The entity class is as below: public class Album { [Key] public int AblumId { get; set; } public decimal Price { get; set; } public string Title { get; set; } } public class MusicContext : DbContext...

SQL Server / C# : Filter for System.Date - results only entries at 00:00:00

I have a connected SQL Server database in Visual Studio and am displaying its content in a grid. I created a dropdown menu with the column names as selectable options and a text field to filter for specific content, e.g., DropDown = "Start" - Textfield = 14.03.2015 = Filter Column...

.NET wep api won't accept %2E or . in api request uri

We're trying to create our first web api using the .net framework. To try this we've used this demo project: In this project we've changed the find() function of the AJAX script so it only sends one var to our new democontroller.: <script> var uri = 'api/Demo'; function find()...

QUERY IN C# ,where statement

How can I write this query on c# : SELECT DEPT_ID FROM PERSONNEL_TEMP.DEPARTMENT WHERE DEPARTMENT_NAME=combobox1.text; ...

How can I determine if an object of anonymous type is empty?

I am sure the answer to this is quite simple but I am trying to write an if statement (C# 5.0) to determine whether or not an anonymous type is empty or not. Here is a simplified version of my code: public void DoSomething(object attributes) { // This is the...

String Format: How to add any number of zeros before string

I'd like to have strings that have zeros before them. I use this code: string a = string.Format("{0:00}",7); The above code gives a two digits string, but what if I want a n digit string? Let's say n = 5, how can I use string.format to get something like 0004?...

Best approach to upgrade MVC3 web app to MVC5?

I have a web application which runs on Azure which is currently running MVC3/C#, EF6.1, .NET4.5. I would like to upgrade it to MVC5 to be: a) Current b) Get benefit of new features c) Get Performance gains. This is a part of a performance project, so hopefully there will...

check if file is image

I want to check if file is image. and then you will see a link where you can see the image. But the link only has to appear if file is link. I try it like this: if (!String.IsNullOrEmpty(item.FileName)) { var file = item.FileName; string[] formats = new string[] {...

how can I add a column to IQueryable object and modify its values

var packs = from r in new XPQuery<Roll>(session) select new { Number = r.number Selection = new bool() }; gcPack.DataSource = packs; I want to add another column to my grid control with: Selection = new bool(). It will be added to the grid but I can't change its...

onSuccess and onFailure doesn't get fired

I have used onSuccess and onFailure in my PageMethod call. However neither of them gets called and the WebMethod doesn't get fired either. alert("1"); PageMethods.LoginUser(onSuccess, onFailure, email, pass); alert("2"); function onSuccess(val) { } function onFailure() { } [WebMethod(EnableSession = true)] public static int LoginUser(string email, string pass) { //Doesn't get...

External Datepicker not working

I'm working with an external jss library that will let me use a datepicker that doesn't cut off the previous and next months dates. I'm getting an error when going through the coding. code $.fn.calendar = function (options) { var _this = this; var opts = $.extend({}, $.fn.calendar.defaults, options); var...

Unconstrained type parameters casting

My situation: interface ISomeInterface { void DoSmth<T>(T other); } class Base : ISomeInterface { public virtual void DoSmth<T>(T other){ // for example do nothing } } class Derived<T2> : Base { Action<T2> MyAction {get;set;} public override void DoSmth<T>(T other){ if(typeof(T2).IsAssignableFrom(typeof(T))) MyAction((T2) other); } } This gives me an error: Cannot...

How does convert.ToString(C0) behave?

I have different scenarios. I need output where the value must return comma separated values in ₹ format which it does in my system where I have the ₹ rupee symbol. Whereas in the user system C0 returns $ value with comma separated values I do not know if he...

Third-party security providers like Google, Twitter etc. in ASP.Net,authentication
I have created a standard ASP.Net web project in Visual Studio 2013 and enabled authentication. A class called 'StartupAuth.cs' is created auotmatically, with following lines. When the app runs on localhost dev server it throws an exception as pasted in screen shot below the code. I need to have it...

How do ASP.NET Web APIs work once built with MSBUILD?

I'm new to coding and spend most of my time in mobile application development with Phonegap, I've been learning how to code ASP.NET Web APIs and I know how it generally all works while having the code open in front of me but --- I was asked a question today...

Unhandled exceptions and background workers

In our application we use several background workers which are executed using SERVICENAME__bgw.RunWorkerAsync() where SERVICENAME is one of several different background worker processes executed by different timers. We recently saw this error message that was shown after an unhandled error bubbled up to the top of the call stack: My...

How to send Ctrl+S through SendKeys.Send() method to save a file(save as dialog)

I need to save a file which is in an External application using SendKeys.Send() method. The keys needed to be sent are Ctrl+S. I wrote the below code, but its not working: SendKeys.SendWait("^%s?"); // to get the Save As dialog Thread.Sleep(5000); SetForegroundWindow(FindWindow(null, "Save As")); Thread.Sleep(5000); SendKeys.SendWait("xyz"); // Sending FileName ...

How does the Take() method work in LINQ

I have a question regarding LINQ's Take() Method. I have a somewhat large table I'm querying in my web app, and I only want to return say N number of rows from the table. I've read through the MSDN documentation, but I can't see where it states if Take() first...

Database object with different data

I'm making a web page in ASP.NET MVC which compares prices from different shops. I have a one-to-many with products and the shops, where the SHOP has one PRODUCT and a PRODUCT has many SHOPs, the problem is that the product is the same but the price is different. Example:... background in 3 pieces to be stationary

I am developing webforms with a background that is made up of 3 images; top, left and right. The 3 pieces are cropped from a full image to accomodate for content body of 770px width in the middle. At present, these 3 images moves with the body content as...

Does MongoDB successful insert guarantee populated ID's?

We are using the MongoDB C# driver to insert a collection of records using InsertManyAsync. We currently have code that iterates the entire collection after InsertManyAsync returns, confirming that the ID's are populated. I would expect that the driver takes care of this already, but I have not found documentation...

How to make a website work only with https [duplicate],ssl,https
This question already has an answer here: How to force HTTPS using a web.config file 3 answers How do I make a website to work only with https? Is there any method to make my website work only if the protocol is https? For example let me say,...

Gridview items not populating correctly,
I have data I am trying to input into a gridview. I am looking up the number of rows for the gridview and adding data into them like this: My "test" however does not get populated into the Submitted and Variance BoundFields in the Gridview. All that populates is the...

Custom drawing using System.Windows.Forms.BorderStyle?

I want to mimick drawing of default border based on value of property BorderStyle. Instead of single border around the control, my control is visualised as four adjacent custom-drawn boxes (2×2), each having standard border drawn individually. So for example, if Control.Border is set to FixedSingle value I want to...

Creating a viewmodel on an existing project

I am trying to add a viewmodel to a project because I want my view to use two separate models. I've looked at different tutorials trying to learn how to do this but I am having some trouble. Before, the view was strongly binded(typed?) to the Person model, but now...

Can I uniquely identify 2 check boxes so that I can add a different image to each?

Currently I am using an image for checked and unchecked checkboxes the html and css is below. <div class="text-field-box text-field-box-mobile radio-button-box small"> <asp:CheckBox ID="ChkOffer1" text=" " runat="server" class="checkbox checkbox-mobile radio" Visible="true" EnableViewState="true"></asp:CheckBox> <% Response.Write(Session("Offer1"))%> </div> and css input[type=checkbox] { display:none; } input[type=checkbox] + label { background-image: url("checkbox-default.png"); background-repeat: no-repeat;...

Convert Double from String,,visual-studio-2012,converter
When converting string to floating, the converter creates wrong results. ?Global.System.Convert.ToDouble("635705821821928755").ToString("0") "635705821821929000" ?Global.System.Convert.ToSingle("635705821821928755").ToString("0") "635705800000000000" I am working with VB.Net Visual Studio 2012, Framework 4 on ASP.Net Webpage. Is there any solution for converting huge numbers from string into floating?...

Regex to remove `.` from a sub-string enclosed in square brackets

I have this regex in C#: \[.+?\] This regex extracts the sub-strings enclosed between square brackets. But before doing that I want to remove . inside these sub-strings. For example, the string hello,[how are yo.u?]There are [300.2] billion stars in [Milkyw.?ay]. should become hello,[how are you?]There are [3002] billion stars...