Read a HTML file into a string variable in memory

Question

If I have a HTML file on disk  How can I read it all at once in to a String variable at run time  Then I need to do some processing on that string variable    Some html file like this    lt html gt       lt table cellspacing  0  cellpadding  0  rules  all  border  1  style  border-width 1px border-style solid width 274px border-collapse collapse   gt           lt COLGROUP gt  lt col width 35px gt  lt col width 60px gt  lt col width 60px gt  lt col width 60px gt  lt col width 59px gt  lt  COLGROUP gt           lt tr style  height 20px   gt               lt th style  background-color  A9C4E9   gt  lt  th gt  lt th align  center  valign  middle  style  color buttontext background-color  D3DCE9   gt A lt  th gt  lt th align  center  valign  middle  style  color buttontext background-color  D3DCE9   gt B lt  th gt  lt th align  center  valign  middle  style  color buttontext background-color  D3DCE9   gt C lt  th gt  lt th align  center  valign  middle  style  color buttontext background-color  D3DCE9   gt D lt  th gt           lt  tr gt  lt tr style  height 20px   gt               lt th align  center  valign  middle  style  color buttontext background-color  E4ECF7   gt 1 lt  th gt  lt td align  left  valign  top  style  color windowtext background-color window   gt Hi lt  td gt  lt td align  left  valign  top  style  color windowtext background-color window   gt Cell Two lt  td gt  lt td align  left  valign  top  style  color windowtext background-color window   gt Actually a longer text lt  td gt  lt td align  left  valign  top  style  color windowtext background-color window   gt Final Word lt  td gt           lt  tr gt       lt  table gt   lt  html gt

User · Answer

var htmlText   System IO File ReadAllText   quot C  filename html quot     And if file in at application root  user below var htmlText   System IO File ReadAllText HttpContext Current Server MapPath   quot   filename html quot

User · Answer

You can do it the simple way   string pathToHTMLFile     C  temp someFile html   string htmlString   File ReadAllText pathToHTMLFile     Or you could stream it in with FileStream StreamReader   using  FileStream fs   File Open pathToHTMLFile  FileMode Open  FileAccess ReadWrite         using  StreamReader sr   new StreamReader fs                 htmlString   sr ReadToEnd              This latter method allows you to open the file while still permitting others to perform Read Write operations on the file   I can t imagine an HTML file being very big  but it has the added benefit of streaming the file instead of capturing it as one large chunk like the first method

User · Answer

What kind of processing are you trying to do   You can do XmlDocument doc   new XmlDocument    followed by doc Load filename    Then the XML document can be parsed in memory   Read here for more information on XmlDocument     MSDN C  Corner tutorial

User · Answer

string html   File ReadAllText path

User · Answer

Use File ReadAllText passing file location as an argument   However  if your real goal is to parse html then I would recommend using Html Agility Pack

User · Answer

This is mostly covered already  but one addition as I ran into an issue with the previous code samples   Dim strHTML as String   System IO File ReadAllText HttpContext Current Server MapPath    folder filename html

User · Answer

Use File ReadAllText path to file  to read

User · Answer

Use System IO File ReadAllText fileName

[c#] Read a HTML file into a string variable in memory

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