Datatable to entity list c#

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Web10 hours ago · I have checked all the namespaces and found no other errors, and I have never modified the code in this file namespace of Data namespace of Entity. // using Microsoft.EntityFrameworkCore; using Microsoft.EntityFrameworkCore.Infrastructure; using … WebNov 16, 2010 · public static class DataTableExtensions { public static IList ToList (this DataTable table) where T : new () { IList properties = typeof (T).GetProperties ().ToList (); IList result = new List (); foreach (var row in table.Rows) { var item = CreateItemFromRow ( (DataRow)row, properties); result.Add (item); } return result; } private static T …

Various Ways to Convert DataTable to List - CodeProject

WebOct 16, 2008 · You need to add data type information for columns. DataTable dt = new DataTable (); dt.Columns.Add ("id",typeof (Int32 )); dt.Columns.Add ("name",typeof (String)); dt.Columns.Add ("foo",typeof (DateTime )); for (int i=0;i<=1000;i++) {dt.Rows.Add (i, "foo", DateTime.Now);} – Rahul Garg Jul 25, 2024 at 10:56 Add a comment 15 WebDataTable dt = YourList.ToDataTable (); public static DataTable ToDataTable (this List iList) { DataTable dataTable = new DataTable (); PropertyDescriptorCollection propertyDescriptorCollection = TypeDescriptor.GetProperties (typeof (T)); for (int i = 0; i )) type = Nullable.GetUnderlyingType (type); dataTable.Columns.Add … real avengers tower

How can I convert a DataTable into a Dynamic object?

Web1 day ago · 1. New contributor. 1. Your question is a bit large and boils down to 2 different questions, that would fit better. First you want to know which container type is the best option in your case. Secondly you want to know, how to access, or index the elements in the container. – stena. WebIf you have any Typed DataType for list object something like this. public class MyObj { public string Name { get; set; } public int ID { get; set; } } real avid ar15 field guide

c# - From datatable to Entity - Stack Overflow

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WebFeb 10, 2014 · From dynamic list to DataTable: List dlist=new List var json = JsonConvert.SerializeObject (dlist); DataTable dataTable = (DataTable)JsonConvert.DeserializeObject (json, (typeof (DataTable))); Also to get JsonString from DataTable: string JSONresult = JsonConvert.SerializeObject … WebIn the below example, first, we declare and initialize a string variable and then we declare a DateTime variable. Then within the if block we are calling the DateTime.TryParse and passing the first parameter as the string variable and the second one is the out data time parameter. If the above string is converted to DateTime, then DateTime ... real avid front sight adjusting tool ar-15WebFirst of all you will need to include Player in your DBContext: public class TeamDBContext : DbContext { public DbSet Teams { get; set; } public DbSet Players { get; set; } } Then you might read this article that describes how to load related entities. Probably you will add it like that: real avid ar tools

"WebOct 3, 2011 · 19. Did you try: List entityList = new List (myEntityCollection); And by the way if you import the System.Linq namespace in order to bring the .ToList () extension method into scope, there's no reason why: List entityList = myEntityCollection.ToList (); wouldn't work as EntityCollection … " - Datatable to entity list c#

Datatable to entity list c#

Convert List of Entity from Datatable - C# Corner

WebDec 21, 2014 · System.Reflection can help you convert List of Entity from datatable. WebSep 29, 2013 · private static DataTable ConvertToDatatable (List data) { PropertyDescriptorCollection props = TypeDescriptor.GetProperties (typeof (T)); DataTable table = new DataTable (); for (int i = 0; i )) table.Columns.Add (prop.Name, prop.PropertyType.GetGenericArguments () [0]); else table.Columns.Add (prop.Name, …

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WebSep 14, 2009 · There are Linq extension methods for DataTable. Add reference to: System.Data.DataSetExtensions.dll. Then include the namespace: using System.Data.DataSetExtensions. Finally you can use Linq extensions on DataSet and … WebJun 11, 2013 · 6 Answers. Sorted by: 3. You can use command.ExecuteReader method and fill entity data using reader. public List ConsultCustomerData (string cardID) { List list = new List (); string sql = "SELECT name, cash FROM customers WHERE card_id = @cardID"; MySqlCommand cmd = new MySqlCommand …

WebMay 2, 2011 · List list = new List (); foreach (DataRow dr in table.Rows) { MyEnt obj = new MyEnt (); obj.Load (dr.ItemArray); list.Add (obj); } Share Improve this answer Follow answered May 2, 2011 at 11:57 FIre Panda 6,501 2 24 38 Add a comment 1 You can first convert it to generic datatable and then convert that datatable to list. WebMar 1, 2024 · public void StudentList () // DataTable dt = new DataTable ("Branches"); DataTable dt = new DataTable ("Student"); dt.Columns.Add ("StudentId", typeof(Int32)); …

Web15 hours ago · I'm trying to connect to a mysql database using c# and Entity Framework. Im working on a code that isnt mine and Im new to c#. I have the MySql.Data and MySql.Data.EntityFramework both in 8.0.32 version. WebMar 27, 2016 · private static List ConvertDataTable (DataTable dt) { List data = new List (); foreach (DataRow row in dt.Rows) { T item = GetItem (row); data.Add (item); } return data; } private static T GetItem (DataRow dr) { Type temp = typeof (T); T obj = Activator.CreateInstance (); foreach (DataColumn column in dr.Table.Columns) { foreach …

Webpublic static DataTable ToDataTable (this IList data) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties (typeof (T)); DataTable table = new DataTable (); foreach (PropertyDescriptor prop in properties) table.Columns.Add (prop.Name, Nullable.GetUnderlyingType (prop.PropertyType) ?? prop.PropertyType); foreach (T item …

WebNov 25, 2024 · Step 3: Now we are going to convert this list object to a DataTable. For that we need to create a new class and a conversion method as below. public class ListtoDataTableConverter { public DataTable ToDataTable(List items) { DataTable dataTable = new DataTable(typeof(T). real avid armorer wrenchWeb2 days ago · I found Removing "RE:" (and alikes) from email subject using RegEx class which is great at stripping re: etc. from the incoming subject. But, we have instances where the ticket title includes the RE:. I anticipate that it could include FW: and FWD: and the mixed and lower case versions of all of those. What's the cleanest Linq or SQL query to ... how to tame chickens in valheimWeb2 days ago · We’re excited to preview three new features for C# 12: Primary constructors for non-record classes and structs. Using aliases for any type. Default values for lambda expression parameters. In addition to this overview, you can also find detailed documentation in the What’s new in C# article on Microsoft Learn. real avid ar15 armorer\u0027s wrenchWebJun 22, 2024 · 1 I have a datatable which contains some rows as a result of joining two tables using the below query: SELECT e.Id AS EmpId, e.Name AS EmpName, d.Id AS DeptId, d.Name AS DeptName FROM … real avid gun boss ar-15 cleaning kitWebThe LINQ Contains Method in C# is used to check whether a sequence or collection (i.e. data source) contains a specified element or not. If the data source contains the specified element, then it returns true else returns false. There are there Contains Methods available in C# and they are implemented in two different namespaces. real avid bench viseWeb1 day ago · I have a Blazor server app that lets users CRUD expenses. Whenever I run the app, I get this error: InvalidOperationException: The entity type 'TipoDeDespesa' requires a primary key to be defined. If you intended to use a keyless entity type, call 'HasNoKey' in 'OnModelCreating'. This is my EndToEndContext: // This file has ... real avid chamber bossWebusing AutoMapper; public List ReadData (DataTable dt) { return Mapper.DynamicMap> (dt.CreateDataReader ()); } Call method like this: DataTable dt = getPeopleDT (); List peopleList = ReadData (dt); Share Improve this answer Follow edited Nov 13, 2024 … real avid armorer\u0027s master wrench