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The basic question is: What is the best way to write data from a hierarchical set of objects to a file? The highest order parent has 1000's of children all with children (DOM style). Trying to traverse the tree and creating one big string which is then written to a file is throwing an out-of-memory exception while creating the string.

Details I've created a set of classes that make up an HTML document. There was control that I needed that the pre-packaged HtmlElement and HtmlDocument didn't give.

Shows how to write an Excel file, a typical table data to a new spreadsheet file, with GemBox.Spreadsheet in C# and VB.NET.

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The Document Object Model is maintained throughout, with some similar methods and properties and such. I'm using the custom classes to create a very large HTML document. When I say large, I mean on the order of over 2000 printed pages. It's doubtful that they will all be printed, but some will be. My base HTMLElement object, from which all other objects are derived, contains an OuterHTML property which, as expected, gets the full HTML of the calling object and the HTML of all child elements. After the code which generates the report runs, I have my HTMLDocument object containing the entire report which needs to be written to a file.

Here is where I keep running into problems. If I call OuterHTML on the HTMLDocument object, I get an out of memory exception. Other reports have saved fine, but this is by far the largest report I've thrown at my HTMLElement object. My assumption is that the property call is generating too much text.

1. Simple VB.net/ASP.NET/HTML/Javascript Code Examples - Write a string to a file in vb.net.
2. This topic shows different ways you can write text to a file for.NET Framework applications or Windows 8.x Store apps. The following classes and methods are.

I am basically just creating a new.HTML file, opening it for reading, and writing in all of the text. Like: File.WriteAllText(FileName, HtmlDoc.OuterHTML) So the question is: what is a better way to do this? I left this question up for a couple of days, hoping for some suggestions, but no luck. So after spending that time trying to come up with some solution, I finally came up with one that is, I think, pretty decent.

In my HTMLDocument.SaveDocument routine, I created a FileStream and a StreamWriter object. And since the document is a tree structure, I created a recursive routine which takes the StreamWriter and the tag collection as arguments. Public Sub SaveDocument(ByVal FileName As String, Optional ByVal IncludeLineBreaks As Boolean = False) If Len(FileName) 0 Then 'Save the document Dim fs As FileStream Dim s As StreamWriter Dim LineBreak As String = IIf(IncludeLineBreaks, vbCrLf, ').ToString Try fs = New FileStream(FileName, FileMode.Create, FileAccess.Write) s = New StreamWriter(fs) Catch ex As Exception MsgBox('Cannot save the HTML document.' & vbCrLf & 'Error: ' & ex.Message, MsgBoxStyle.OkOnly, 'Save HTML Dcoument Error') Exit Sub End Try Try With s.BaseStream.Seek(0, SeekOrigin.End) 'begin the html document.Write(Me.DocType.OuterHTML & LineBreak).BaseStream.Seek(0, SeekOrigin.End) Me.RecursiveDocumentSave(s, Me, LineBreak).Close End With Catch ex As Exception MsgBox('Error saving the HTML document.'

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