Get specific row from datatable c#

Author: aaqk

August undefined, 2024

WebJan 27, 2015 · Useful property names: I find using names as theData bad practice. It doesn't give any info on the instance. Give it a useful name you, and others, easily … WebAug 23, 2024 · using System; using System.Data; class Program { static void Main() { // // Get the first row for the DataTable // DataTable table = GetTable(); // // Get the row and …

c# - Search DataTable by column for a specific row - Code …

WebSelect one specific row from DataTable with Linq in C#. As DataRowCollection doesn't inherit IEnumerable, so you need AsEnumerable () extension for DataTable (which … WebIf you need a strongly typed reference (string in your case) you can use the DataRowExtensions.Field extension method: string field = d.Rows [0].Field (3); (make sure System.Data is in listed in the namespaces in this case) Indexes are 0 based so we first access the first row (0) and then the 4th column in this row (3) Share herbal untuk asam lambung tinggi

c# - Find a row in a DataTable - Stack Overflow

WebDataTable infoTbl = new DataTable (); infoTbl = getInfo (lbldatabasesessionID.Text); And I would use foreach loop to loop through the DataTable. foreach (DataRow row in infoTbl.Rows) { string x = col.ToString (); } WebMay 9, 2024 · Now we see how we can perform various queries against our data table on the list using a one-line query using a simple Lambda expression. A DataTable object has a built-in select method that has the following signature: DataRow [] DataTable.Select (string filterExpression, string sort) Where the input parameters are: Webpublic double GetVal (int row, int column) { double output; using (var reader = new StreamReader ("filename.csv")) { int m = 1; while (!reader.EndOfStream) { if (m==row) { var splits = rd.ReadLine ().Split (','); //You need check the index to avoid overflow output = double.Parse (splits [column]); return output; } m++; } } return output; } … excel ugrás táblázat végére

get row from dataTable - social.msdn.microsoft.com

DataTable.Select Method (System.Data) Microsoft Learn

WebOct 7, 2024 · DataRow [] drs = dataTable.Select ("UserName='" + name + "'"); DataTable dataTableNew = dataTable.Clone (); foreach (DataRow dr in drs) { … Web12. The simplest way to extract data from a DataTable when you have multiple data types (not just strings) is to use the Field extension method available in the … excel ugrás a táblázat aljáraWebOct 20, 2011 · var rows = tbl.AsEnumerable ().Select (row => row).ToList (); tbl = new DataTable (); tbl.Columns.Add ("ID", typeof (Int32)); tbl.Columns.Add ("NameID", typeof (Int32)); tbl.Columns.Add ("Name", typeof (String)); rows.GroupBy (r => r.Field ("NameID")) .Select (rr => rows.First (rw => rw.Field ("NameID") == rr.Key)) .ToList () .ForEach … herbal untuk asam lambung naik

"WebJan 30, 2016 · 我是C 和使用Windows窗體的新手。我有一個dataTable，如屏幕快照所示，我想基於Button Name列值在button Text列中獲取特定單元格的值，並將其保存在字 … " - Get specific row from datatable c#

Get specific row from datatable c#

c# - Get Values from DataTable by row and column name - Stack Overflow

WebYou have the Select method off of a DataTable. GEt the table from your DataSet, and use Select to snag it. void Demo (DataSet ds) { DataTable dt = ds.Tables [0]; // refer to your table of interest within the DataSet dt.Select ("Field = 1"); // replace with your criteria as … WebDec 24, 2014 · The following is an example to access a specific cell, and print its value in the console: DataTable dt = result.Tables [0]; Console.WriteLine (dt.Rows [rowPosition] [columnPosition]); If you do not want to do a DataTable, you can do the same as follows: Console.WriteLine (result.Tables [0].Rows [rowPosition] [columnPosition]);

Did you know?

Web1 Answer. I think you should use your Rows variable to set the new values on, and not the complete datatable: //find rowIndex of skill id DataRow [] Rows = MySkills_dataTable.Select ("SkillID='"+ SkillID + "'"); Rows [0] ["Proficiency"] = Proficiency; Rows [0] ["Yrs_Experience"] = Yrs_Exp; This is correct solution, however if Rows return … WebJun 30, 2016 · It returns a DataRow [] that can easily be converted into a list. Example of a 2 column DataTable: DataTable dt = new DataTable (); // TODO: Insert data into DataTable foreach (DataRow row in dt.Select ()) { Console.WriteLine (); Console.WriteLine (row [0].ToString ()); Console.WriteLine (row [1].ToString ()); } Share Improve this answer

WebDec 10, 2009 · Use linq and set the data table as Enumerable and select the fields from the data table field that matches what you are looking for. Example. I want to get the currency Id and currency Name from the currency table where currency is local currency, and assign the currency id and name to a text boxes on the form: WebMay 27, 2024 · If you're asking how to check if row 0 even exists, use something like this: Name.Text = dt.Rows.Count > 0 ? (string)dt.Rows [0] ["Empname"] : null; And don't use ToString () on something you know is a string, it's not only inefficient, but it shows you don't understand your framework. Share Follow answered May 27, 2024 at 15:46 Blindy

WebApr 29, 2012 · You can try: SQL. select * from [name of your table] where sid=101 or sid=102 or sid=109; If you have a DataTable object you can access the data with the … WebOct 22, 2024 · This is C#, and I can not change the input parameters data types, but basically I have to make something like the SQL: SELECT returnCol FROM dt WHERE …

WebAug 18, 2010 · You are looking for a row in datatable dt when the row is actually in datatable dtMsg.... Try: int msgIndex = dtMsg.Rows.IndexOf (dtMsg.Rows [0]); Actually that is always going to return zero anyway as you are referencing the row by index anyway.

WebAug 16, 2013 · var DTOperators = new DataTable (); var UserName = "test"; DTOperators.Columns.Add ("UserName", typeof (string)); DTOperators.Rows.Add ("test1"); DTOperators.Rows.Add ("test"); var LoginDetails = from myRow in DTOperators.AsEnumerable () where myRow.Field (0) == UserName select … excel új sor beillesztése excel új sor egy cellábanWebDataRow newRow = table.NewRow (); // Set values in the columns: newRow ["CompanyID"] = "NewCompanyID"; newRow ["CompanyName"] = "NewCompanyName"; // Add the row to the rows collection. table.Rows.Add (newRow); } Remarks To create a new DataRow, you must use the NewRow method to return a new object. excel ugrás a lap tetejéreWebDataRow newRow = table.NewRow (); // Set values in the columns: newRow ["CompanyID"] = "NewCompanyID"; newRow ["CompanyName"] = "NewCompanyName"; // Add the row … herbal untuk ayam ngorokWebOct 7, 2024 · User-2107542234 posted. Hi, i have a dataTable contain 3 columns. i want to get a specific row by the User Name excel új sor beszúrásaWebJan 19, 2024 · protected void btnLogin_Click (object sender, EventArgs e) { SqlConnection conn = new SqlConnection (conString); conn.Open (); SqlCommand cmd = new SqlCommand ("SELECT username, pass FROM users where username = '"+txtUser.Text+"' and pass='"+txtPass.Text+"'" , conn); SqlDataAdapter da = new SqlDataAdapter (cmd); … excel új sor beszúrása gyorsbillentyűWebMay 26, 2010 · // Get the first & third field's value by column index. int weight = dataTable.Rows [0].Field (0); string code = dataTable.Rows [0].Field (2); // Get the second & Fourth field's value by column name. string name = dataTable.Rows [0].Field ("Name"); DateTime date = dataTable.Rows [0].Field … excel új munkalap létrehozása vba