Datatable to entity list c#

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WebDec 21, 2014 · System.Reflection can help you convert List of Entity from datatable. 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 …

How can I convert a DataTable into a Dynamic object?

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 … 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 … rbc peel sherbrooke montreal

LINQ Contains Method in C# with Examples - Dot Net Tutorials

WebMar 1, 2024 · public void StudentList () // DataTable dt = new DataTable ("Branches"); DataTable dt = new DataTable ("Student"); dt.Columns.Add ("StudentId", typeof(Int32)); … 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 Web2 days ago · Checkboxes are generated based on already saved data in different Database table. Idea is that based on what what checkbox is "checked" it's being added to list List with FustTypeName I'm stuck in part @Html.CheckBoxFor(model=>model.FustTypeList) as my list should contain strings, but output from checkbox is Boolean rbc personal chequing account

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c# - Using AutoMapper to Map a DataTable to an Object (DTO)

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 … 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 … rbc pembina hoursWeb1 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 ... rbc peterborough hours

"Web2 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 ... " - Datatable to entity list c#

Datatable to entity list c#

c# - How do I fix error "requires a primary key to be defined"?

WebThe 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. 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).

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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 … 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.

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 … 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 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, … 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 …

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 ...

WebDec 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. rbc personal loan rate todayWebJan 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) … rbc peterborough phone numberWebFeb 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 … sims 4 all things infants can learnWebpublic 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 … rbc personal line of credit ratesWeb2 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. sims 4 all townsWebMay 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; } … rbc personal credit card - policyWebMay 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. rbc peterborough transit