Datatable any c#

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WebAug 14, 2008 · You need to use the AsEnumerable () extension for DataTable. Like so: var results = from myRow in myDataTable.AsEnumerable () where myRow.Field ("RowNo") == 1 select myRow; And as @Keith says, you'll need to add a reference to System.Data.DataSetExtensions AsEnumerable () returns IEnumerable. Webbool hasRows = dataTable1.Rows.Any () But unfortunately, DataRowCollection does not implement IEnumerable . So instead, try this: bool hasRows = dataTable1.Rows.GetEnumerator ().MoveNext () You will of course need to check if the dataTable1 is null first. if it's not, this will tell you if there are any rows without …

c# - select certain columns of a data table - Stack Overflow

WebFeb 19, 2013 · public static string convertDataTableToString (DataTable dataTable) { string data = string.Empty; int rowsCount = dataTable.Rows.Count; for (int i = 0; i < rowsCount; i++) { DataRow row = dataTable.Rows [i]; int columnsCount = dataTable.Columns.Count; for (int j = 0; j < columnsCount; j++) { data += dataTable.Columns [j].ColumnName + "~" … Web12 rows · DataTables is a plug-in for the jQuery Javascript library. It is a highly flexible … high burn temp oil

c# - How to check empty DataTable - Stack Overflow

Web1)Send the JSON from Angular to C# controller method. 2)In C# Controller method -. convert the string data (JSON object) to a datatable. DataTable dt = (DataTable)JsonConvert.DeserializeObject (data, (typeof (DataTable))); 3)Create a table in SQL Server database by parsing through rows and columns of the datatable dt. WebJul 26, 2014 · The reason for this is that every user will have that datatable stored against them. That means if the table is 1MB and you have 100 users, then you will have 100MB of session objects. Obviously this is not very good. Instead what you can do is use the Application Cache. WebDataTable firstTable = dataSet.Tables[0]; instead for name: DataTable customerTable = dataSet.Tables["Customer"]; Note that you should have using statements for their SQL user, to ensuring the terminal is removed cleanly: using (SqlConnection conn = ...) { … how far is philadelphia from charleston wv

c# - How to convert a list into data table - Stack Overflow

How to convert a DataTable to a string in C#? - Stack Overflow

WebJan 21, 2024 · I have a psv file, i read data from the file and put it in to C# datatable. Now i have to insert data in to sql table. The header names are different in my datatable and sql table. ... LINQ can query a DataTable and return any type of object you like. The following link shows how that works. Single-Table Queries (LINQ to DataSet) WebJan 24, 2012 · If you are wanting to do the same thing but loop thru the datatable via a DataAdapter look at this link for a quick example .. because you are pretty much doing the same thing this example shows with the exception you are trying to pass the entire datatable vs building the results into the email body.. How to use DataAdapter to … highburn stronghold afkWebC# private void GetRows() { // Get the DataTable of a DataSet. DataTable table = DataSet1.Tables ["Suppliers"]; DataRow [] rows = table.Select (); // Print the value one column of each DataRow. for(int i = 0; i < rows.Length ; i++) { Console.WriteLine (rows [i] ["CompanyName"]); } } Remarks how far is philadelphia from baltimore md

"WebJun 25, 2009 · bool isExisting = (bdsAttachments.DataSource as DataTable).AsEnumerable().Any(xxx => (string)dr["filename"] == filename); I'm getting an inkling that the Select method of DataTable returns a copy, I'm thinking to just use AsEnumerable, the problem is I'm just targeting 2.0 framework, … " - Datatable any c#

Datatable any c#

c# - Querying DataColumnCollection with LINQ - Stack Overflow

WebFeb 27, 2024 · Tables.Add("CustTable"); In the following code example, we … Web1 day ago · Suppose there are about 5000 records for a month which is returned by an API endpoint and be loaded into a dataTable in WebApp. But if I try to get all the 5000 records from API, it might take a noticeable time to get the data and display the same. Also, there is a chance of timeout. What is the best solution to get such large data from API?

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WebApr 16, 2024 · public DataTable SelectedColumns (DataTable RecordDT_, string col1, string col2,string col3,...) and also add the parameters to this line: System.Data.DataTable selected = view.ToTable ("Selected", false,col1, col2,col3,...); Then simply implement the function as: DataTable myselectedColumnTable=SelectedColumns … WebNov 29, 2024 · C# DataTable table = dataSet.Tables ["Customers"]; // First process deletes. adapter.Update (table.Select (null, null, DataViewRowState.Deleted)); // Next process updates. adapter.Update (table.Select (null, null, DataViewRowState.ModifiedCurrent)); // Finally, process inserts. adapter.Update (table.Select (null, null, …

WebJul 23, 2024 · C# Datatable linq - where any. Ask Question Asked 3 years, 8 months ago. Modified 2 years, 8 months ago. Viewed 527 times -1 I have a datatable that populates a list. The datatable has 3 columns, 'unit', 'clientId' and 'incident'. The incident could fx be '1. rate paid' or 'resold'. WebC# private void GetRows() { // Get the DataTable of a DataSet. DataTable table = …

WebThe C# DataTable is defined as the class which contains a number of rows and columns for to storing and retrieving the data’s from both the memory and the database; it also represents the grid forms in the UI areas; it’s a C# ADO.NET package class using that class we can add the datas to the datatable, and we will bind the datas in the same both … WebNov 2, 2024 · Serialize a DataTable Using Newtonsoft.Json Package We will start with …

WebSep 14, 2024 · DataTable table = new DataTable (); table.Columns.Add ("Price", typeof(int)); table.Columns.Add ("Genre", typeof(string)); var query = from i in items where i.Price > 9.99 orderby i.Price select new { i.Price, i.Genre }; query.CopyToDataTable (table, LoadOption.PreserveChanges); Example

WebFeb 7, 2012 · Correct, you get true if there is any record in the DataSet no matter in which table. If you want to make sure all tables have a record: bool HasRecords (DataSet dataSet) { bool res = true; foreach (DataTable dt in dataSet.Tables) if (dt.Rows.Count == 0) res = false; return res; } – Tomek Feb 7, 2012 at 10:11 Add a comment 0 how far is philadelphia from boston by carWebHow to export from datatable to excel file in wpf c# 2012-06-23 08:09:00 4 18647 c# / … how far is philadelphia from bostonWebYou can export to an excel-file with the use of a webgrid (only in code). Under the assumption that you're creating a WinForm-application, you will have to make a reference to the System.Web library. // Create the DataGrid and perform the databinding var myDataGrid = new System.Web.UI.WebControls.DataGrid(); myDataGrid.HeaderStyle.Font.Bold = … highburn strongholdWeb1 day ago · Suppose there are about 5000 records for a month which is returned by an API endpoint and be loaded into a dataTable in web app. But if I try to get all the 5000 records from API, it might take a noticeable time to get the data and display the same. Also, there is a chance of timeout. What is the best solution to get such large data from API? how far is philadelphia from buffalo nyWeb1 day ago · Because you didn't provide any details about your scenario, I can only provide a very general example. For example, if you use the old Ado.Net API to read data from a database you can read it directly into a DataTable.. The following example shows how to generate a table that consists of two columns "Username" and "Age" and is populated … high burst rate camerasWebYou could also use: var x = from DataColumn c in myDataTable.Columns select c.ColumnName. It will effectively do the same as Dave's code: "in a query expression, an explicitly typed iteration variable translates to an invocation of Cast (IEnumerable)", according to the Enumerable.Cast Method MSDN article. Share. how far is philadelphia from baltimoreWebHow to export from datatable to excel file in wpf c# 2012-06-23 08:09:00 4 18647 c# / wpf / excel / datatable / export highburton