How to display/ fire data (sum column values) from SQL Server database in C# WinForm textBoxes -


i'm trying display sum columns sql server database winforms textboxes i'm facing difficulties , don't know further.

this how table in database looks like:

enter image description here

my c# code:

if (combobox1.selectedtext != null) {     string cs = (@"data )      sqlconnection con = new sqlconnection(cs);      sqlcommand sqlcmd = new sqlcommand();     sqlcmd.connection = con;     sqlcmd.commandtext = ("[dbo].[spsalesanalyse]");     sqlcmd.commandtype = commandtype.storedprocedure;      cbanalyse.selectedvalue.tostring());     sqldatareader myreader;      try     {          con.open();          sqldataadapter adapter = new sqldataadapter(sqlcmd);        // save results in dt. call adapter statement , fill in dt                 datatable dt = new datatable();                 adapter.fill(dt);                 //fill textboxes data in dt                 textbox1.text = dt.rows[0].field<string>("north");                 textbox2.text = dt.rows[1].field<string>("east");                 textbox3.text = dt.rows[2].field<string>("west");                 ....     }     catch(exception ex)     {         messagebox.show(ex.message);     }         {         con.close();     } } else     messagebox.show("error");

my expectation:

enter image description here

the problem: if debugg till line adapter.fill(dt), see records but not getting textboxes. empty when debugg reach textboxes level

hope did express myself well

looks trying 1 textbox value @ time. use group by clause in sql fetch data.

select   country,   region,   sum([sales1]) [first sales],   sum([sales2]) [sec sales],   sum([sales3]) [third sales]    [dbo].[tblsales] group country, region

a single query return results. can take results in dataset , set values of corresponding textboxes fetching values dataset.

//use query string show above sqldataadapter adapter = new sqldataadapter(querystring, connection); dataset dataset = new dataset(); adapter.fill(dataset);

now have records inside dataset, can fill textboxes.

datarow datarow = dataset.tables[0].select("country = 'italy' , region = 'north'").firstordefault(); if (datarow != null) {     textbox1.text = datarow["first sales"].tostring(); }

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