datatable - How to remove complete row from a data table when it is a duplicate row in c# -

-

i have data table has duplicate row follow.

|     |                    |            |           |       | |cid  |    usrnme          |   pname    |   prate   | cabin | |-----------------------------------------------------------| |c11  | demo1@gmail.com    |   sample1  |    2000   | b2    | ******* |c14  | demo2@live.com     |   sample2  |    5000   | b3    | |c15  | demo3@yahoo.com    |   sample3  |    8000   | b2    | |c11  | demo1@gmail.com    |   sample1  |    2000   | b2    | ******* |c18  | demo4@gmail.com    |   sample4  |    3000   | l1    | |c11  | demo5@gmail.com    |   sample5  |    7400   | b4    | &&&&&&& ============================================================

note : there different data same id ,see &&&&&&& row

how 1 row above duplicate 2 rows.i have tried this

this code used.

public datatable removeduplicaterows(datatable dtable,string colname) {     colname = "cabin";     hashtable htable = new hashtable();     arraylist duplicatearraylist = new arraylist();       foreach(datarow drow in dtable.rows)     {         if (htable.contains(drow[colname]))             duplicatearraylist.add(drow);         else         {             htable.add(drow[colname], string.empty);         }     }      foreach (datarow drow in duplicatearraylist)         dtable.rows.remove(drow);      return dtable; }

if used above code avoid duplicate according cabin removes all records cabin b2 , keep first 1 only.what want remove full row(keep 1 , delete others).how can that.

its cid decides uniqueness of record. in provided example there 2 rows same cid , entire row same too.. proves if use cid find duplicates desired output

change line of code

colname = "cabin"; colname = "cid";


Comments

Post a Comment

Popular posts from this blog

javascript - How to get current YouTube IDs via iMacros? -

-
i want viewed youtube video id , save csv via imacros, gets nothing. here js code: var videoid; videoid ="code:"; videoid +="url goto=https://www.youtube.com/watch?v=dbnywxdz_pa"+"\n"; videoid +="add !extract {{!urlcurrent}}"+"\n"; videoid +="set !var1 eval(\"var s=\"{{!urlcurrent}}\"; s.match((?<=watch\\?v=|/videos/|embed\\/)[^#\\&\\?]*);s[0]; \")"+"\n"; videoid +="add !extract {{!var1}}"+"\n"; videoid +="saveas type=extract folder=* file=url.csv"+"\n"; try this: var videoid = "url goto=https://www.youtube.com/watch?v=dbnywxdz_pa" + "\n"; videoid += "set !extract {{!urlcurrent}}" + "\n"; videoid += 'set !extract eval("\'{{!extract}}\'.match(/v=(.{11})/)[1];")' + "\n"; videoid += "saveas type=extract folder=* file=url.csv" + "\n"; iimplay
Read more

c# - Maintaining a program folder in program files out of date? -

-
for program i'm writing in vs c# wpf need store user related information on user's computer. far knew has been done creating folder in c:\program files , adding whatever program related info folder in subfolders or whatever. after doing browsing came across lot of people saying method out of date because access may denied create folder there, works administrative accounts, etc.. 1 site suggested saving c:\users\username\appdata\roaming or c:\users\username\appdata\local. question best , date method saving program data users computer? also take @ msdn article . it uwp apps have general idea put if developing wpf app. you may need these folders: environment.specialfolder.applicationdata environment.specialfolder.localapplicationdata environment.specialfolder.commonapplicationdata
Read more

emulation - Android map show my location didn't work -

-
i have been struggle current location in google map, tried official map demo, not working also. shows getmylocation button on upper right, didn't show blue dot on map current location. here code , i'm using emulator target api 23, guess may emulator's problem since code download directly github. advice appreciated. [screenshot][1] package com.example.mapdemo; import com.google.android.gms.maps.googlemap; import com.google.android.gms.maps.googlemap.onmylocationbuttonclicklistener; import com.google.android.gms.maps.onmapreadycallback; import com.google.android.gms.maps.supportmapfragment; import android.manifest; import android.content.pm.packagemanager; import android.os.bundle; import android.support.annotation.nonnull; import android.support.v4.app.activitycompat; import android.support.v4.content.contextcompat; import android.support.v7.app.appcompatactivity; import android.widget.toast; /** * demo
Read more