Datatable to entity list c#

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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 …

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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. WebJan 14, 2024 · Answers. the following is the method through which you can convert any list object to datatable.. public DataTable ConvertToDataTable (IList data) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T)); DataTable table = new DataTable(); foreach (PropertyDescriptor prop in properties) … cristina tpi imx

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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 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 … Web1 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 ... cristina tozzi

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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 … 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 … cristina toscano tullamarineWeb10 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 … cristina tovar

"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#

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WebMay 29, 2024 · public static DataTable CreateDataTable (IEnumerable entities) { var dt = new DataTable (); //creating columns foreach (var prop in typeof (T).GetProperties ()) { dt.Columns.Add (prop.Name, prop.PropertyType); } //creating rows foreach (var entity in entities) { var values = GetObjectValues (entity); dt.Rows.Add (values); } return dt; } … Webvar dataTable = GetDataTableFromSomewhere (); var dynamicTable = dataTable.AsDynamicEnumerable (); var firstRowIDColumn = dynamicTable.First ().ID; var lastRowIDColumn = dynamicTable.Last () ["ID"]; But I prefered an IDataReader approach if possible. Share Improve this answer Follow edited Dec 18, 2024 at 14:33 answered Dec …

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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 … 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 …

Webusing 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 … 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; } }

WebSep 14, 2024 · In this article. Data binding is a common use of DataTable object. The CopyToDataTable method takes the results of a query and copies the data into a DataTable, which can then be used for data binding.When the data operations have been performed, the new DataTable is merged back into the source DataTable.. The … WebMar 1, 2024 · public void StudentList () // DataTable dt = new DataTable ("Branches"); DataTable dt = new DataTable ("Student"); dt.Columns.Add ("StudentId", typeof(Int32)); …

Web2 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.

WebFirst 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: manichino albero di nataleWeb2 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 ... manichino allenamentoWebNov 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). manichini vestitiWebJun 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 … manichino a filoWebDec 3, 2024 · Entity Framework will generate and execute the SQL Command in the database and then store the results in the instances of your domain objects so that you can do different types of operations on the data. Entity Framework Versions: In the year 2008, Microsoft introduced Entity Framework as part of .NET Framework 3.5. cristina trebbiWebSep 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, … cristina torres verano azulWeb15 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. manichino anatomico