c# - While binding a retrieved excel columns in DataSet all columns are retrieved bind except the last column -


i have requirement import excel file in asp.net mvc. importing working needed, there 78 columns in excel file. columns imported except last column.

how retrive last column excel file?

string constring = string.empty;                         if (getfileextension.tolower() == ".xls")                         {                             constring = "provider=microsoft.jet.oledb.4.0;data source=" + getfilename + ";extended properties=\"excel 8.0;hdr=yes;imex=2\""; ;                         }                         else if (getfileextension.tolower() == ".xlsx")                         {                             constring = "provider=microsoft.ace.oledb.12.0;data source=" + getfilename + ";extended properties=\"excel 12.0;hdr=yes;imex=2\"";                         }                         oledbconnection con = new oledbconnection(constring);                         if (con.state == connectionstate.closed) con.open();                         datatable excelsheets = con.getoledbschematable(oledbschemaguid.tables, new object[] { null, null, null, "table" });                         string spreadsheetname = excelsheets.rows[0]["table_name"].tostring();                         string query = "select * [" + spreadsheetname + "]";                         oledbcommand cmd = new oledbcommand(query, con);                         oledbdataadapter da = new oledbdataadapter(cmd);                         dataset ds = new dataset();                         da.fill(ds);                         da.dispose();                         con.close();                         con.dispose();

according import excel datatable skipping last column values, may excel or oledb bug.

as workaround, might consider modifying excel sheet add additional column header @ end, no data in column. then, column skipped during import 1 don't need.


-

Comments

Post a Comment

Popular posts from this blog

amazon web services - S3 Pre-signed POST validate file type? -

i know it's possible put limit on file size content-length-range header. possible validate file type? https://docs.aws.amazon.com/amazons3/latest/dev/httppostforms.html#policyconditions i see there content-type header, if set say, audio/mp3 allow mp3 files , return error if file not mp3? i found previous question answers mention validating file size: s3 direct upload restricting file size , type you can specify content-type @ post request. you can specify @ signature, post must done content-type: { "expiration": "2007-12-01t12:00:00.000z", "conditions": [ {"acl": "public-read" }, {"bucket": "johnsmith" }, {"content-type: "audio/mp3"} ] } creating html form (using aws signature version 4) edit: @ previous question found, checking content-type.
Read more

c# - Check Keyboard Input Winforms -

i wondering if instead of doing this protected override void onkeydown(keyeventargs e) { if (e.keycode == keys.a) console.writeline("the key down."); } i set bool method , this: if(keydown(keys.a)) // whatever here i've been sitting here ages trying figure out how it. can't wrap head around it. in case wondering, plan call bool inside different method, check input. since want perform action after pressing key, using keydown event enough. but in cases suppose want check if specific key down in middle of process, can use getkeystate method way: [dllimport("user32.dll", charset = charset.auto, exactspelling = true)] public static extern short getkeystate(int keycode); public const int key_pressed = 0x8000; public static bool iskeydown(keys key) { return convert.toboolean(getkeystate((int)key) & key_pressed); } you should know, each time check key state using example iskeydown(keys.a) method returns true if ke...
Read more