Datatable to string list c#

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WebDec 15, 2024 · Rows select new Category() { Id = Convert.ToInt32 (dr [ "Id" ]), CategoryName = dr [ "CategoryName" ].ToString (), IsActive = Convert.ToBoolean (dr [ "IsActive" ]), }).ToList (); } WebNov 5, 2010 · I think all the solutions can be improved and make the method more general if you use some conventions and reflection. Let's say you name your columns in the datatable the same name as the properties in your object, then you could write something that look at all your properties of your object and then look up that column in the datatable to map …

c# - Convert list of string to DataTable - Stack Overflow

Web列表視圖就像我需要將Listview的數據添加到Dictionary lt String,String gt 。現在我正在使用for loop來做到這一點。有沒有辦法使用LINQ來做到這一點。最后，詞典將包含編輯我的代碼：提前致謝 ... [英]C# : How to add data data from a ListView control to a Dictionary Web之前写了个 List item.toDataTable() 这种链式调用的List转换为DataTable的方法，有两位热心的网友提出了存在的一些缺陷，如果传入的obj参数不是List而是单个object对象或传入的是单类型的List时转换会出错，现对代码进行了些修改，反正代码测试基本是跑通了，对List，单个Object对象，以及List flug ew 268

how convert DataTable to List in C# - Stack …

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, … WebOct 1, 2016 · List BrandsInDataTable = new List (); DataTable g = Access._ME_G_BrandsInPop (); if (g.Rows.Count > 0) { for (int x = 0; x < g.Rows.Count; x++) BrandsInDataTable.Add (g.Rows [x] ["Name"].ToString ()); } else return; Share Improve this answer Follow answered Oct 20, 2024 at 17:51 Leo Garza 41 5 Add a … WebJul 23, 2015 · public static DataTable ToDataTable (List items) { DataTable dataTable = new DataTable (typeof (T).Name); //Get all the properties PropertyInfo [] Props = typeof (T).GetProperties (BindingFlags.Public BindingFlags.Instance); foreach (PropertyInfo prop in Props) { //Setting column names as Property names dataTable.Columns.Add … flug ew2759

C# - Ways to Convert Datatable to List in C# (with …

c# - How to fill a datatable with List - Stack Overflow

WebAug 11, 2016 · Closed 6 years ago. I need to convert C# DataTable to Generic Collection List. DataTable Columns Respectively 1. EmpId (this is Int DataType) 2. EmpName (this is varchar DataType) 3. EmpAddress (this is varchar DataType) 4. EmpPhone (this is varchar DataType) 5. Status (this is Boolean DataType) 6. EmpRelationKey (this is int DataType) WebMay 6, 2012 · This is what I have written so far: Public Function GetGazetteer (dataTable As DataTable) As String Dim processedData = New List (Of String) Dim rowData = String.Empty Dim results = New StringBuilder () For Each row As DataRow In dataTable.Rows processedData.Add (row (1)) If row (3) <> row (1) Then … flug ew 4601Webprivate IEnumerable ConvertToTankReadings (DataTable dataTable) { var tankReadings = new List (); foreach (DataRow row in dataTable.Rows) { var tankReading = new TankReading { TankReadingsID = Convert.ToInt32 (row ["TRReadingsID"]), TankID = Convert.ToInt32 (row ["TankID"]), ReadingDateTime = Convert.ToDateTime (row … flug ew2784

"WebMar 27, 2016 · C# List< Student > studentDetails = new List< Student > (); studentDetails = ConvertDataTable< Student > (dt); Change the Student class name and dt value based on your requirements. In this case, the DataTable column's name and class property name should be the same, otherwise this function will not work properly. Summary " - Datatable to string list c#

Datatable to string list c#

Convert DataTable to List In C# - c-sharpcorner.com

WebSep 17, 2014 · In your current code you are trying to fill List using DataAdapter. You can't do that. Instead you can fill a DataTable and then get a List like: DataTable dt = new DataTable (); cmd.CommandType = CommandType.StoredProcedure; SqlDataAdapter da = new SqlDataAdapter (cmd); da.Fill (dt); Users = dt.AsEnumerable … WebHi. I am trying to create a data table from a string variable. The string contains information as below. ... -like this and continuing till end How to achieve this in C#? C#. C# An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.

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WebMar 1, 2024 · Convert DataTable to List using a Generic Method This is a generic method that will convert any type of DataTable to a List (the DataTable structure and List class structure should be the same). The following are the two functions in which if we pass a DataTable and a user defined class. WebApr 11, 2024 · Actually, I sort them in this simple way. somedata.Sort (); and then I copied them in a new list iterating the list of the Group= (Feline, Equidae, Fish, Feline, Bird 1, Bird 2....) parameter because I would divide the list per group type. This iteration copy also the "other data" and in second list that then I merge between putting them using ...

WebAug 10, 2024 · This is a simple use case. If you want to get an string array of the full name. Below code will help you to get it. The below code concatenates the First Name and Last Name. And return a string array of full name. IList< string > studentNames = dtStudents.AsEnumerable ().Select (item => string .Format ( " {0}, {1}", item [ … WebSep 15, 2009 · public List ConvertToList (DataTable dt) { var columnNames = dt.Columns.Cast () .Select (c => c.ColumnName) .ToList (); var properties = typeof (T).GetProperties (); return dt.AsEnumerable ().Select (row => { var objT = Activator.CreateInstance (); foreach (var pro in properties) { if (columnNames.Contains …

WebI want to know how to transform a DataTable into a Dictionary. I did something like this. using System.Linq; internal Dictionary GetDict(DataTable dt) { return dt.AsEnume...

WebIn this example, we create a DataTable with two columns, "Id" and "Name", and add three rows to it. We then use the AsEnumerable extension method to convert the DataTable to …

Web2 Answers Sorted by: 4 You'll need to add a column to the data table first. As it is created is has no columns DataTable datatable= new DataTable (); DataColumn workCol = datatable.Columns.Add ("column_name", typeof (String)); Share Improve this answer Follow answered Nov 22, 2024 at 17:04 Carlo Bos 3,020 2 15 27 Add a comment 0 flug ew 2594WebJun 30, 2016 · An alternative method in getting a list of DataRow is to Select () the DataTable. It returns a DataRow [] that can easily be converted into a list. DataTable dt = new DataTable (); // TODO: Insert data into DataTable foreach (DataRow row in dt.Select ()) { Console.WriteLine (); Console.WriteLine (row [0].ToString ()); Console.WriteLine … greene king staff car parkWebOct 17, 2024 · If you just need a comma separated list for all of row values you can do this: StringBuilder sb = new StringBuilder(); foreach (DataRow row in results.Tables[0].Rows) { sb.AppendLine(string.Join(",", row.ItemArray)); } A StringBuilder is the preferred method as string concatenation is significantly slower for large amounts of data. greene king special offersWebDec 15, 2024 · private static void ConvertUsingForEach(DataTable table) { var categoryList = new List (table.Rows.Count); foreach (DataRow row in table.Rows) { var values = row.ItemArray; var category = new Category … greene king social club bury st edmundsWebSep 17, 2024 · 2. Convert to DataRow [] first by Select, then SelectMany to flatten to an array of object. Finally, convert each value object to string. var list = dt.Select ().SelectMany (row => row.ItemArray).Select (x=> (string)x).ToList () Share. Improve this answer. Follow. greene king staff online trainingWebMar 13, 2024 · StringBuilder 是一个可变的字符串类型，它在 C# 中是 System.Text 命名空间中的一个类。这意味着在使用 StringBuilder 类之前，你需要在你的代码中包含下面的语句： using System.Text; 你可以通过两种方式来创建 StringBuilder 对象： - 使用带有初始字符串的构造函数： StringBuilder sb = new StringBuilder("Initial string ... greene king sustainability reportWebMar 1, 2024 · Convert DataTable to List Using Linq This is the modern approach for creating a List in C#. public void StudentListUsingLink () { // DataTable dt = new … greene king supply chain