c# - How to import Excel file to Database ADO.net -


i tried write code import excel file database using c# , ado.net got code run output wrong.

using excel; using system.io;  namespace expperson {     public partial class form2 : form     {         public form2()         {             initializecomponent();         }          private void btnimport_click(object sender, eventargs e)         {             try             {                 openfiledialog op = new openfiledialog();                 op.filter = "excel workbook| *.xls;*.xlsx;*.xlsm";                 if (op.showdialog() == dialogresult.cancel)                     return;                 filestream stream = new filestream(op.filename, filemode.open);                 iexceldatareader excelreader = excelreaderfactory.createopenxmlreader(stream);                 dataset result = excelreader.asdataset();                  maamoonkhalidissueentities db = new maamoonkhalidissueentities();                     foreach (datatable table in result.tables)                     {                         foreach (datarow dr in table.rows)                         {                             person addtable = new person()                             {                                 nname = convert.tostring(dr[0]),                                 ncode = convert.tostring(dr[1]),                                 ntel1 = convert.tostring(dr[2]),                                 ntel2 = convert.tostring(dr[3]),                                 nfax = convert.tostring(dr[4]),                                 nemail = convert.tostring(dr[5]),                                 nadd = convert.tostring(dr[6])                             };                         }                    }                 db.savechanges();                 excelreader.close();                 stream.close();                  messagebox.show("import sucess","good",messageboxbuttons.ok,messageboxicon.hand);             }               catch (exception ex)             {                 messagebox.show(ex.message, "message", messageboxbuttons.ok, messageboxicon.error);             }         }     } }

but there issue code runs without errors data in database isn't right , can't figure out wrong.

you need call db.people.add(addtable); on each iteration of datarow loop.

so:

foreach (datarow dr in table.rows) {     person addtable = new person()     {         nname = convert.tostring(dr[0]),         ncode = convert.tostring(dr[1]),         ntel1 = convert.tostring(dr[2]),         ntel2 = convert.tostring(dr[3]),         nfax = convert.tostring(dr[4]),         nemail = convert.tostring(dr[5]),         nadd = convert.tostring(dr[6])     };     db.people.add(addtable) }

otherwise, entity framework doesn't know want them inserted database.


Comments

Post a Comment

Popular posts from this blog

PHP and MySQL WP -

i trying accomplish 2 things here code. writing php directly wp page using insert php plugin. 1) query mysql database , return results 1 column 4 columns. 2) make each result own hyperlink directs user new wp page runs new query on page. i able query show results , turn results dynamic hyperlink, cannot formatting down. right returns result 1 column. here have: [insert_php] $servername = "localhost"; $username = "login"; //edited privacy $password = "password"; //edited privacy $database = "database"; //edited privacy // create connection $conn = new mysqli($servername, $username, $password, $database); // check connection if ($conn->connect_error) { die("connection failed: " . $conn->connect_error); } echo "connected successfully"; //get results database $result = mysqli_query($conn,"select mine mines order mine"); $all_property = array(); //declare array saving property //showing proper...
Read more

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

go - golang pprof for c library code -

i have been trying profile golang application pprof, seems details of c code(linked static library) missed in output result. flame graph from frame graph can see c code time consuming reported within "runtime._externalcode", no details @ all. , sure static library compiled debug enable. so there way make pprof details(like stack trace) of 3rd party c code? or there other golang profiling tool this?
Read more