Datatable to string list c#

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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 … WebOct 16, 2008 · DataTable.Select() doesnt give the Rows in the order they were present in the datatable. If order is important I feel iterating over the datarow collection and forming a List is the right way to go or you could also use overload of DataTable.Select(string filterexpression, string sort).. But this overload may not handle all the ordering (like order …

linq - Convert DataTable to Generic List in C# - Stack Overflow

WebOct 24, 2013 · First you need to spit the string appropriately to get a list of string arrays. Something like this: var patient_list = new List (strMLMPatientData.Split (';').Select (x => x.Split (','))); or even better: var patient_list = strMLMPatientData.Split (';').Select (x => x.Split (',')).ToList (); You need Linq for that, but you get the idea. 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 … chrome shower niche

CSharp中string字符串转list集合 - CSDN文库

Webprivate 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 … 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) chrome shower hose clip

How to create dictionary with list of string as value from grouped data …

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

WebJan 24, 2024 · You need to change the code from List column1List = (returnDataTable.AsEnumerable ().Select (x => x ["Column1"].ToString ()).ToList ()).Distinct (); List column1List = (returnDataTable.AsEnumerable ().Select (x => x ["Column1"].ToString ()).Distinct ().ToList (); Share Improve this answer Follow edited … 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 chrome shower head setWebMar 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 chrome shower tub faucets

"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 " - Datatable to string list c#

Datatable to string list c#

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...

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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. Web2 days ago · GroupBy(data => data[0], StringComparer.OrdinalIgnoreCase). ToDictionary(data => data.Key, data => data.First()[2], StringComparer.OrdinalIgnoreCase); I know the problem lies in the parameters in the ToDictionary() function. My code only gets the first match. But I cannot figure out how 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 WebMar 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 ...

WebMar 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 … 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 an IEnumerable, and use the Select method to extract the "Name" column from each row using the Field method. We then convert the result to a List called …

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 …

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 … chrome shower trap coverWebDec 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 … chrome shower toothbrush holderWebJun 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 … chrome shower pipe coversWebDec 15, 2024 · Rows select new Category() { Id = Convert.ToInt32 (dr [ "Id" ]), CategoryName = dr [ "CategoryName" ].ToString (), IsActive = Convert.ToBoolean (dr [ "IsActive" ]), }).ToList (); } chrome shower soap dispenserWebMar 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. chrome show filtered out request cookiesWebOct 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. chrome shower pipe fittingsWebSep 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, … chrome show fps