2024 Datatable to string list c#

Datatable to string list c#

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WebDec 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 … 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 …

c# - Convert DataTable to IEnumerable - Stack Overflow

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 WebSep 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. how to buy marlin crypto

c# - How to fill List with SqlDataAdapter? - Stack Overflow

WebJun 2, 2010 · What you can do is concatenate all the column in a single string and then add them in a list of string. To do that modify your query like 'CK' said. var data = (from a in db.CoA where a.ParentId == 0 && a.Asset == true select new { a.Asset.ToString() + … 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 … 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 … mexican supermarket logan heights san diego

How to get list of one column values from DataTable in C#?

c# - Convert DataTable to List - Stack Overflow

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 … 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. how to buy marimed stockWebOct 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. how to buy marks of fortune new world

"" - Datatable to string list c#

Datatable to string list c#

linq - Transform a DataTable into Dictionary C# - Stack Overflow

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 WebJul 4, 2012 · DataTable dt = new DataTable (); dt.Columns.Add (); dt.Columns.Add (); dt.Columns.Add (); List tempList = new List () { "a", "b", "c" }; dt.Rows.Add (tempList.ToArray ()); Share Improve this answer Follow answered Jul 4, 2012 at 12:29 VEDAVYAS BHAT 21 1 Add a comment Your Answer Post Your Answer

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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 … 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 [ …

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 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)

WebJul 11, 2015 · List results = dt.Select () .Select (dr => dr.ItemArray .Select (x => x.ToString ()) .ToArray ()) .ToList (); This only works if the items stored in dr.ItemArray have overriden .ToString () in a meaningful way. Luckily the primitive types do. Share Improve this answer Follow answered Jul 11, 2015 at 8:21 Enigmativity 112k 11 90 172 WebJun 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 …

WebFeb 17, 2024 · string [] columnNames = dataTable.Columns.AsEnumerable ().Select (column => column.Name).ToArray (); You may also implement one more extension method for DataTable class to reduce code: public static class DataTableExtensions { public static IEnumerable GetColumns (this DataTable source) { return …

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, … how to buy marketmoveWebOct 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 … mexican swampscott maWebIn 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 … how to buy mars shiba coinWebSep 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 … mexican surnames boza meaningWebApr 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 ... how to buy marriott pillowsWebIn 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 … how to buy mary kay products onlineWeb2 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 … how to buy maryland municipal bonds