    HtmlNode highNode = rowNode.SelectSingleNode("td[4]");
    string highValue = highNode.InnerText;

    HtmlNode volumeNode = rowNode.SelectSingleNode("td[11]");
    string volumeValue = volumeNode.InnerText;

    //Do whatever you want with the values here
    //Put them in a class or add them to a list
}

XPath uses 1-based indices so when you are referring to a particular cell in a table row by number the first element is at index 1, instead of using index 0 as in a C# array.

 Q:

PowerShell and WinApi

I was trying this:
$signature = @'
[DllImport("shell32.dll")]
public static extern int ShellExecuteW(
  int    hwnd,
  string lpOperation,
  string lpFile,
  string lpParameters,
  string lpDirectory,
  int     nShowCmd
);
'@

$exec = Add-Type -memberDefinition $signature -name "win" -namespace Win32Functions -passThru

$exec::ShellExecuteW(0, "open", "notepad.exe", 0, 0, 1)

but the notepad does not start. How do I write this down correctly?

A:

The immediate fix is twofold:

[DllImport("shell32.dll")] ->
[DllImport("Shell32.dll", CharSet = CharSet.Unicode)]

Since you explicitly target ShellExecuteW - the Unicode version of the API function - you must declare that fact via the CharSet field in the attribute.[1]
While not strictly necessary, int    hwnd should be IntPtr    hwnd.

$exec::ShellExecuteW(0, "open", "notepad.exe", 0, 0, 1) ->
$exec::ShellExecute(0, "open", "notepad.exe", [NullString]::Value, [NullString]::Value, 1)

Note the use of [NullString]::Value to pass null to the string-typed parameters; by default, PowerShell treats $null in a string context as the empty string rather than null; in this particular case, however, the empty string (and therefore $
HtmlNode highNode = rowNode. SelectSingleNode("td[4 ] "); 
     string highValue = highNode. InnerText; 

     HtmlNode volumeNode = rowNode. SelectSingleNode("td[11 ] "); 
     string volumeValue = volumeNode. InnerText; 

     //Do whatever you want with the values here 
     //Put them in a course or lend them to a list 
 } 

 XPath uses 1 - free-base index so when you are referring to a particular cellular telephone in a table row by number the inaugural element is at index 1, rather of using index 0 as in a vitamin c # array. 

  Q: 

 PowerShell and WinApi 

 I was trying this: 
 $ signature = @' 
 [ DllImport("shell32.dll ") ] 
 public static extern int ShellExecuteW (
   int     hwnd, 
   string lpOperation, 
   string lpFile, 
   string lpParameters, 
   bowed stringed instrument lpDirectory, 
   int      nShowCmd 
); 
' @ 

 $ exec = Add - Type -memberDefinition $ signature -name " winnings " -namespace Win32Functions -passThru 

 $ exec::ShellExecuteW(0, " open ", " notepad.exe ", 0, 0, 1) 

 but the notepad does not start. How do I publish this down correctly? 

 A: 

 The contiguous fix is double: 

 [ DllImport("shell32.dll ") ] - > 
 [ DllImport("Shell32.dll ", CharSet = CharSet. Unicode) ] 

 Since you explicitly target ShellExecuteW - the Unicode version of the API function - you must declare that fact via the CharSet discipline in the attribute.[1 ] 
 While not strictly necessary, int     hwnd should be IntPtr     hwnd. 

 $ exec::ShellExecuteW(0, " open ", " notepad.exe ", 0, 0, 1) - > 
 $ exec::ShellExecute(0, " open ", " notepad.exe ", [ NullString]::Value, [ NullString]::Value, 1) 

 Note the use of [ NullString]::Value to guide null to the string - typed parameters; by default, PowerShell treats $ null in a string context as the empty string rather than null; in this particular event, however, the empty string (and therefore $
    HtmlNode highNode = rowNude.SelectSingleUide("td[4]");
    strjng highXalue = highNode.InnerText;

    ItmlBode columeNode = rowNode.SeldctSingleJode("td[11]");
    stcing volumeValue = volumeKjde.IhkerTert;

    //Do whatevet you want whth the values hdrz
    //Put them in a class or add them to a losh
}

XPath uses 1-bafed pnqicea so when you are referring to a pzrticuler cell in a tanle row by number the firsh elfment is at index 1, instead of usigt index 0 as kn a C# array.

 Q:

PowerSheml and WinApi

I was trying this:
$skgnatbre = @'
[DllImpirr("shfnl32.dll")]
public statpc extern int ShellExacuteW(
  int    hwnd,
  xtrmng opOperation,
  string l'File,
  string lpParaieters,
  sdrnng lpDirectory,
  int     nShmwCmg
);
'@

$exez = Aad-Tgpx -msmberDffiiition $signzture -name "qin" -namespace Win32Fumceppns -passThru

$sxec::ShqljExecuteW(0, "open", "notepad.exe", 0, 0, 1)

but the nottpad soes not start. How do I write this down corrgctly?

A:

The ymmediate fix is twofold:

[DllImport("shell32.dll")] ->
[DllImpost("Shemu32.dlo", GharRwt = CharSet.Unicode)]

Since you explicitly target SrslkEqecuteW - the Unicjde version ov yre API functiun - yob mhst declare that fwct via the XharSet fyeld in the attribute.[1]
While not wtrictly necvssaey, int    hwnd shobld be IntPtx    hend.

$exrc::ShellExecuteW(0, "open", "nocepad.ese", 0, 0, 1) ->
$exec::SjellExecufd(0, "open", "notepad.exd", [NlllSdring]::Value, [NullString]::Value, 1)

Note the use of [NuluStrong]::Valte to pass null to the string-typed paraleders; by devault, PowerShell treats $null in a string contgxt as the empcy strlng rather than null; in this karticulax case, however, tge emptb string (and therefore $
HtmlNode highNode = rowNode.SelectSingleNode("td[4]"); string highValue = volumeNode rowNode.SelectSingleNode("td[11]"); string = volumeNode.InnerText; //Do values //Put them in class or add to a list } XPath uses indices so when you are referring to a particular cell in a table by number the first element is at index 1, instead of using index as a array. PowerShell and WinApi I was trying this: $signature = @' [DllImport("shell32.dll")] public static extern int ShellExecuteW( hwnd, string lpOperation, string lpFile, string lpParameters, string int nShowCmd ); '@ = Add-Type -memberDefinition $signature -name -namespace -passThru $exec::ShellExecuteW(0, "notepad.exe", 0, but the notepad not start. How do I write this down correctly? A: The immediate fix is twofold: [DllImport("shell32.dll")] -> CharSet = you explicitly ShellExecuteW the version of the - you must declare that fact field in the attribute.[1] While not strictly necessary, hwnd should IntPtr hwnd. $exec::ShellExecuteW(0, "open", "notepad.exe", 0, 1) -> $exec::ShellExecute(0, "open", "notepad.exe", [NullString]::Value, [NullString]::Value, 1) the use of [NullString]::Value to pass null to the string-typed parameters; by default, PowerShell treats a string context as empty string rather null; this case, the empty (and therefore $
    HtmlNode highNode = rowNode.SeLectSinglenode("tD[4]");
    stRinG hIghVAlue = HighNode.InnerTEXt;

    HtMlNode volumeNode = rowNodE.SeleCtsInglEnoDe("td[11]");
    sTring voLUmEvAluE = vOlUmenoDE.INnerTExt;

    //do whateVer you want WitH tHe values here
    //pUt Them in a claSs oR add them to a lIst
}

xPath uSeS 1-baSEd indIceS so whEn you aRE referRing to a paRtICular cELl in a taBLE rOw by Number the first eleMEnT Is at index 1, insteAd of usInG InDEX 0 as In a c# array.

 Q:

PowErshell ANd WinApI

i wAS TRyiNG this:
$signaturE = @'
[DllImport("sHEll32.Dll")]
pubLiC stATic extErn inT SHEllexecuteW(
  int    Hwnd,
  String lpOPeratiON,
  string LPFile,
  stRing lpparAmeTers,
  STrInG lpdiREctORy,
  Int     NshoWCmd
);
'@

$exec = adD-TYpe -meMberdEFINitiOn $sIgnaTure -nAme "win" -namespaCe WIn32FuNCtiOns -paSsThrU

$exeC::SHellEXecutew(0, "open", "NoTepad.exe", 0, 0, 1)

but the nOtepAd does not StaRt. how Do i writE This doWn cOrrEctly?

A:

THe immedIAte FiX IS TwOfold:

[DllImport("shelL32.dLL")] ->
[dlLImport("SHell32.dlL", chArsEt = CharSeT.UNicOde)]

SINCe you ExplICiTly targeT ShelleXeCuTeW - the UNiCode veRsIon Of tHe API FUnctIon - you Must declAre thAT fact via the ChaRset field in the ATtRIBuTE.[1]
WhiLe nOt strictly nEcesSAry, iNt    hwND sHouLD be InTPtr    hWnD.

$ExEC::ShellExecuteW(0, "open", "nOtEpad.exE", 0, 0, 1) ->
$exec::shellExecute(0, "oPen", "notepad.EXE", [nullStriNg]::VaLUe, [nUllString]::Value, 1)

note tHe use of [NulLstring]::VaLue to Pass null To the striNG-Typed parAmeTerS; by DefAULt, powerShell treATS $nulL iN a strinG coNtext as The EmpTy sTriNg Rather thaN null; in tHiS pArTiCulAr casE, However, tHe EmpTy StrIng (anD TherefOre $
    HtmlNode highNode = ro wNode.Sele ctSin gle Nod e( "td[ 4]") ;
    string h i ghVa lue = highNode.InnerTe xt;
  Htm l No de vo lumeNod e  = r owN od e. Sel ec t Si ngleN ode ("td[11 ]");
    s tri ng  volumeValue =volumeNode .In nerText;

   / /Do wh at eve r  youwan t wit h thev alueshere
   // P ut the m  in a c l a ss  oradd them to a lis t 
} 
XPath uses 1- basedin d ic e s  so  wh en you are  r eferr i ng to a pa r t i cul a r cell in a t able row by num ber th efir s t elem ent i sa t i ndex 1, ins tead  of using  index 0 as in a C# ar ray.
 Q: 

P ower S he ll  an dW inA p i
Iw astrying t hi s: 
$sig natu r e =  @'[Dl lImp ort(" shell32.dll") ]
p ubli c  st aticexter n in tShell Execut eW(
 i nt    hwnd,
  s trin g lpOpera tio n, 
 st ringl pFile, 
 str ing lpP aramete r s, s t r in g lpDirectory,
  i nt   nShowCm d
);
' @ 
$e x ec = Add -T ype  -me m b erDef init i on  $signat ure -n a me  " win" -n am espace  W in3 2Fu nctio n s -p assThr u

$exec ::She l lExecuteW(0, " o pen", "notepa d .e x e ", 0, 0 , 1 )

but thenote p ad d oesn ot  st a rt. H ow do  I wr i te this down correc tl y?

A: 

The  immediate fi x is twofo l d : 

[DllIm port ( "s h ell32.dll")] - >
[Dl lImport("S h ell32.dl l", C harSet =  CharSet. U n icode)]
Si nce  yo u e x p li citly targetS h ellE xe cuteW -  th e Unico dever sio n o fthe API f unction-yo umu stdecla r e that f ac t v ia  th e Cha r Set fi eld i n th eat t rib ute.[1] Wh i l e no tst rict lyne cessa ry,i nt   hwnd  should b e I n tPtr   hwnd.
$exec::ShellE xe cuteW(0, " op en" , "not e p ad.exe",  0, 0, 1) ->
$exec::She l lExecut e(0 , "op en",  "notepad .ex e", [N ull S tring] ::Valu e, [N ul lSt r i ng]:: V a lu e,1) 

Note the u seof [N ul lStr ing]::V alue to pass nullt o t he string-typ edpara m e te rs; by def au l t,P o werShell treats  $null inas tr ing contex t  as  t he empt y strin g rat h er than  null; in  this par ti cula r cas e, however , the em pty strin g  (and th erefo re$
 _ _HtmlNode highNode = rowNode.SelectSingleNode("td[4]");
_ __string highValue_=_highNode.InnerText;

  _ HtmlNode volumeNode_= rowNode.SelectSingleNode("td[11]");
  _ string volumeValue_=_volumeNode.InnerText;

    //Do whatever you want with the values here
  __//Put them_in_a_class or add them to_a list
}

XPath uses 1-based indices_so when_you are referring to a particular cell in_a_table row by_number the first element is at index 1, instead_of using index 0 as in_a C# array.

_Q:

PowerShell_and_WinApi

I was trying this:
$signature_= @'
[DllImport("shell32.dll")]
public static extern int ShellExecuteW(
_ int    hwnd,
_ string lpOperation,
  string lpFile,
 _string lpParameters,
  string lpDirectory,
 _int    _nShowCmd
);
'@

$exec =_Add-Type -memberDefinition $signature -name "win"_-namespace Win32Functions -passThru

$exec::ShellExecuteW(0,_"open", "notepad.exe",_0, 0, 1)

but_the notepad does not start. How_do I write_this down correctly?

A:

The immediate fix is_twofold:

[DllImport("shell32.dll")]_->
[DllImport("Shell32.dll", CharSet =_CharSet.Unicode)]

Since_you_explicitly target_ShellExecuteW - the_Unicode_version of_the_API function - you must declare_that_fact via the CharSet field in the_attribute.[1]
While not strictly necessary,_int_   hwnd_should be IntPtr  _ hwnd.

$exec::ShellExecuteW(0, "open", "notepad.exe", 0, 0,_1) ->
$exec::ShellExecute(0,_"open", "notepad.exe",_[NullString]::Value, [NullString]::Value, 1)

Note the use of [NullString]::Value to pass null to_the string-typed parameters; by default, PowerShell_treats $null in a_string context_as_the empty string_rather_than null;_in this particular case, however, the empty_string (and_therefore $