Dataset to list string c#

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WebLINQ to DataSet-按變量字段分組，或按可變條件（加和）聯接 [英]LINQ to DataSet - group by variable field, or join on a variable condition (with sum) WebDec 24, 2014 · One way to do it : FileStream stream = File.Open (@"c:\working\test.xls", FileMode.Open, FileAccess.Read); IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader (stream); excelReader.IsFirstRowAsColumnNames = true; DataSet result = …

DataSet values to store in List object - Microsoft Q&A

WebNov 1, 2016 · List list = new List (); list.Add ("One"); list.Add ("Two"); var result = query.Where (x => list.Contains (x.tags)); Share Improve this answer Follow answered May 20, 2014 at 15:40 Ehsan Sajjad 61.6k 16 105 160 2 Contains does not accept a sequences of items as it's parameter – Servy May 20, 2014 at 15:44 2 WebIs there a way you can pass a list object from C# over to a stored procedure?I was able to do something similar by using XML and multiple single. ... [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public string InsertCars(List myCars, int userID) { DataSet dataSet = new DataSet(); using (OracleConnection sqlConnection = new ... how do you get old tape off wood doors

c# - How to use Linq to check if a list of strings contains any string ...

WebDec 20, 2012 · This does add the three columns to the list. It's not clear what you are asking. You're asking for a List, but unless you just string concat all three columns (which seems to me to be entirely useless), you can't get at each column for each row unless you change the list element from string to string[] (or similar). – WebAug 7, 2009 · 5. You could create an extension method to add all property values through reflection: public static DataSet ToDataSet (this IList list) { Type elementType = typeof (T); DataSet ds = new DataSet (); DataTable t = new DataTable (); ds.Tables.Add (t); //add a column to table for each public property on T foreach (var propInfo in … Web2. Using this below code, you can convert List to DataTable :-. List objlist = alldata; string json = Newtonsoft.Json.JsonConvert.SerializeObject (objlist); DataTable dt = Newtonsoft.Json.JsonConvert.DeserializeObject (json); Here, I'm assuming … phoenix wedding expo 2021

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c# - One columned datatable to List - Stack Overflow

WebLoad(IDataReader, LoadOption, String[]) Fills a DataSet with values from a data source using the supplied IDataReader, using an array of strings to supply the names for the … WebAug 9, 2015 · A dataset has rows and columns, a List only has columns so you'll need to explain what your list is going to look like as there is no one-to-one conversion. … phoenix wedding packagesWebOct 2, 2013 · DataSet myDataSet= JsonConvert.DeserializeObject (jsonstring) And you keep going coding with you dataset. like accessing datatables inside the dataset. If it's what you want to achieve and don't want to use your own POCO as suggested by previous answers. You might need to create a Typed DataSet before how do you get oil stains out of pants

"WebAdd a comment. 2. There are some ORMs that can read directly from DB to dynamic ExpandoObject. For example petapoco (and read here the example) Or you could try something similar: var dt = new DataTable (); var dns = new List (); foreach (var item in dt.AsEnumerable ()) { // Expando objects are IDictionary … " - Dataset to list string c#

Dataset to list string c#

WebApr 2, 2013 · 1 I have a function that gets a SQL command and returns a dataset. Now I'm trying to run this string command: @"SELECT ProductPrice FROM Products Where ProductPrice IN ( SELECT ProductPrice FROM Products WHERE ProductName =N'" + listBox1.Text + "')").Tables [0].Rows [0].ToString () ProductPrice is an INT ProductName … WebJul 8, 2011 · 1.Very Simple Code to iterate datatable and get columns in list. 2.code ==>>> foreach (DataColumn dataColumn in dataTable.Columns) { var list = …

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WebDec 4, 2024 · Convert DataTable to List using a Generic Method 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; } //required using System.Reflection; private static T GetItem (DataRow dr) { Type temp = typeof … WebMar 7, 2024 · The collection you created uses the List type. This type stores sequences of elements. You specify the type of the elements between the angle brackets. One …

WebMar 25, 2024 · private List MapDataTableToPrivacyStatusData (DataTable privacyData) { var rows = new List (privacyData.Rows.OfType ()); var privacyStatusDataList = mapper.Map, List> (rows); return … WebMar 26, 2014 · You are adding the current object, this, to the list and then, in subsequent iterations, you are modifying the same object (via the this reference) before adding it, …

WebJul 11, 2015 · How to convert DataRow [] to List. DataTable dt; DataRow [] drArray = dt.Select ().ToArray (); My requirement is i want to convert drArray as List or Converting Datatable to List in … WebNow if for example, my datatable has three values as 1,2,3. What I want is to put these three values in a string and separate them by commas as folows:-string test= "1,2,3"; If Datatable has 2 values, then string should be as follows:-string test= "1,2"; I did try but in vain. Please help. Thanks. edit:-

WebFeb 10, 2024 · ♉ In C# using String.Join method we can convert our List to comma separated string. ♉ String.Join() is a static method of String class , which …

Web将C#数据集导出到文本文件,c#,dataset,export,text-files,C#,Dataset,Export,Text Files,网上有很多关于如何从文本文件填充数据集的例子，但我想做的恰恰相反。我唯一能找到的是，但似乎。 phoenix wedding receptionWebSep 24, 2013 · If you want a List, you should select string s, not objects of an anonymous type. List list = dsUniqueIds.Tables [0].AsEnumerable ().Select (r => r.Field ("UniqueIDs")).ToList (); Share Follow answered Sep 24, 2013 at 13:52 Tim S. 55k 7 93 122 Add a comment 1 how do you get on a government watch listWebI want to get records from database into a DataTable. Then convert the DataTable into a JSON object. Return the JSON object to my JavaScript function. I use this code by calling: string resul... how do you get olive oil out of fabricWeb2 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 how do you get olive oil stain out of clothesWeb以下是使用XmlDocument的方法： // A string containing the XML data string xml = "12"; // The list you want to fill ArrayList list = new … phoenix wedding dresses pricesWebAug 11, 2016 · 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) phoenix wedding makeup artistWebApr 14, 2024 · 方法. 文字列 (string)をタブ区切りで分割したリストに変換するには、Split ()とToList ()を使います。. まず、System.Linqを導入します。. 次に、文字列からSplit … phoenix weekend freeway closures