2024 Get row index from datatable c#

Get row index from datatable c#

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August undefined, 2024

WebApr 21, 2016 · int currentRow = datagridview.CurrentRow.Index The third one is actually rather problematatic as, depending on the SelectionMode of the DataGridView the current row may not be selected. But your problems come from trying to grab the index in response to the user hitting the Enter-key. WebDataTables stores the data for rows and columns in internal indexes for fast ordering, searching etc. It can be useful at times to know what these indexes are, as they can be used for efficient selectors in the row (), column () …

c# - DataTable: how to get the duplicates and the row number …

WebDec 21, 2013 · // Find the matching index of the DataRow object in DataTable dt1 // find by primary key DataRow pkRow = dt1.Rows.Find (row ["ID"]); int pkIndex = dt1.Rows.IndexOf (pkRow); // OR // compare column value (here just AnotherID, multiple or all values are possbile) DataRow anotherRow = dt1.AsEnumerable ().FirstOrDefault (row1 => row1 … WebAs you can see, here, we created one DataTable with the name Customer. Then we created three data columns (ID of type Int32, Name of type string, and Mobile of type string) and added these three columns to the … hans joachim pabst von ohain

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

WebJun 21, 2009 · for (Int32 i = 0; i < dt_pattern.Rows.Count; i++) { double yATmax = ToDouble (dt_pattern.Rows [i+1] ["Ampl"].ToString ()) + AT; } Note you would have to take into account during the last row there will be no 'i+1' so you will have to use an if statement to catch that. Share Improve this answer Follow answered Jun 21, 2009 at 16:08 user110714 WebJul 16, 2016 · 33. If you need the index of the item you're working with then using a foreach loop is the wrong method of iterating over the collection. Change the way you're looping so you have the index: for (int i = 0; i < dt.Rows.Count; i++) { // your index is in i var row = dt.Rows [i]; } Share. WebDec 17, 2013 · C# int index = -1; DataRow [] rows = dt.Select ( "MyColumnName Like '%a%'" ); if (rows.Count () > 0 ) { index = myDataTable.Rows.IndexOf (rows [0]); } Posted 17-Dec-13 2:53am OriginalGriff Solution 4 if you have primary key column in the data table you can use DataRow dr = DataTable1.Rows.Find ( [primary key value]); hans joachim rose

DataTable.Rows Property (System.Data) Microsoft Learn

WebDec 21, 2013 · There are two DataTables dt1 and dt2 created with the same schema and same data. Select rows form DataTable dt2, using which populate DataRow [] rows. Then from the DataRow [] rows assign a random row (for example) to a DataRow object. Find the matching index of the DataRow object in DataTable dt1. WebAdd row to DataTable method 1: DataRow row = MyTable.NewRow(); row["Id"] = 1; row["Name"] = "John"; MyTable.Rows.Add(row); Add row to DataTable method 2: MyTable.Rows.Add(2, "Ivan"); Add row to DataTable method 3 (Add row from another table by same structure): MyTable.ImportRow(MyTableByName.Rows[0]); Add row to … hans joachim rolf hildesheimWebAug 4, 2024 · 2. Here is working code for you. You need to set the datatables in a var. Use that var table to look for clicked row which will $ (this).parents ('tr') [0] and use .data.id to the clicked item id. I have recreated the your example and its working fine. Just set you ajax response to the data. chadwell heath to kings cross

"WebJan 28, 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 understand. Casing of property names: " - Get row index from datatable c#

Get row index from datatable c#

DataTable Class (System.Data) Microsoft Learn

Web2 Answers. Sure. You 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 appropriate } WebAug 18, 2024 · DataRow [] dr = dt.Select ( "ID= 1" ); foreach (DataRow row in dr) { var name = row [ "NAME" ].ToString (); var contact = row [ "CONTACT" ].ToString (); } Using the 'Field extension method in System.Data, we can make simpler the casting of Column values from 'object to their native Type:

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WebUsing DataSet: string firstName = string.Empty; DataRow row = table.Select ("ElementType = 'Demographics' AND ElementName = 'FirstName'").FirstOrDefault (); if (row != null) { firstName = (string)row ["ElementValue"]; } Using Linq: WebSep 30, 2016 · First, do select to your datatable, then get the row index with For Each. Dim result () As DataRow = tblchk.Select ("Device_No ='" & TxtBarcode.Text & "'") For Each row As DataRow In result MsgBox (row.Table.Rows.IndexOf (row)) ''this is for row index value Next Share Improve this answer Follow edited Sep 3, 2024 at 6:48 ZygD 21k 39 77 97

WebJul 19, 2012 · 1 var query = (from x in dataTable.Rows.OfType () where x.Field ("columnName") == "someValue" select x).ToList (); Share Improve this answer Follow answered Jul 19, 2012 at 6:18 Matt 6,747 10 63 112 Field is not resolved. i am getting this error. what does this x.Field for – Moiz Jul 19, 2012 at 6:35 WebDataRow 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.

WebYou can use DataColumn.Ordinal to get the index of the column in the DataTable. So if you need the next column as mentioned use Column.Ordinal + 1: row [row.Table.Columns ["ColumnName"].Ordinal + 1] = someOtherValue; Warning: This code returns the next column, so the one after ColumnName, as requested in the question. Share Improve … WebOct 7, 2024 · As far as DataRow objects go, I believe you can use the DataRow.Contains () method to check if a particular object exists before accessing it : // You can attempt to use the DataRow.Contains () method if (row.Contains (55)) { rowData.Col56 = Convert.ToString (row [55]).Trim (); } or if you would prefer a rather short one liner :

WebFeb 19, 2015 · You can iterate thru the datatable and get every row, which can be thought as an array, so you can pick each element of that particular row using an index (and can also use the name of the column instead of the index, i.e.: row ["column3 name"]). foreach (DataRow row in datatable) { Console.WriteLine (row [2]); } Share Improve this answer …

WebAug 1, 2024 · You can use for each loop to get your data. string x = string.Empty; DataTable d = FileHelpers.CommonEngine.CsvToDataTable(@"D:\Sacramentorealestatetransactions.csv", "Sacramentorealestatetransactions", ',', true); // Get FileHelpers package from NuGet … hans joachim preil und rolf herrichtWebThe DataRow has also an indexer: Object cellValue = dt.Rows [i] [j]; But i would prefer the strongly typed Field extension method which also supports nullable types: int number = dt.Rows [i].Field (j); or even more readable and less error-prone with the name of the column: double otherNumber = dt.Rows [i].Field ("DoubleColumn"); Share chadwell heath to green parkWebMay 17, 2014 · I am using index as varibale to access the rows of dataTable like following. C#. for ( int index= 0; index< DT.rows.count;index++) { string member = "" ; member = DT.Rows [index] [ "memberName" ]; } After running 32768 it is showing error as There is no row at postion at -32768. chadwell heath to liverpool streetWebFeb 18, 2014 · Hello Siri have binded a datatable with all the records from a particular table from the database the total records are 1059 now i want to find the row number in that ... chadwell heath to ilfordWebApr 18, 2015 · I can filter the row based on condition using below code C# DataRow [] result = dt.Select ( "Breakpoint >= 30000" ); foreach (DataRow row in result) { Console.WriteLine ( "{0}, {1}", row [0], row [1]); } But my requirement is to get index no because in some cases i need to reverse the loop. Posted 18-Apr-15 4:24am jinesh sam chadwell heath to londonWebApr 26, 2010 · The Delete method marks a row for deletion; the row is not actually removed until you call AcceptChanges.. Instead, call _dt.Rows.Remove(_dt.FindBySomeKey(_someKey)), which will also accept the change. Believe it or not, Rows.Remove will completely remove the row, whereas row.Delete() … hans joachim thiemann oberndorf chadwell heath to milton keynes