Question

if (webBrowser1.DocumentText.IndexOf("Page: 1") != -1)

on the above line i am getting this exception

System.IO.FileNotFoundException was
unhandled Message=”The system cannot
find the file specified. (Exception
from HRESULT: 0x80070002)”
Source=”System.Windows.Forms”
StackTrace:
at System.Windows.Forms.UnsafeNativeMethods.IPersistStreamInit.Save(IStream
pstm, Boolean fClearDirty)
at System.Windows.Forms.WebBrowser.get_DocumentStream()
at System.Windows.Forms.WebBrowser.get_DocumentText()
at WindowsFormsApplication1.Form1.GenerateETGWorklists()
in C:\Documents and
Settings\agordon\My Documents\Visual
Studio
2008\Projects\GenerateWorklists\GenerateWorklists\Form1.cs:line
603
at WindowsFormsApplication1.Form1.btnProcess_Click(Object
sender, EventArgs e) in C:\Documents
and Settings\agordon\My
Documents\Visual Studio
2008\Projects\GenerateWorklists\GenerateWorklists\Form1.cs:line
55
at System.Windows.Forms.Control.OnClick(EventArgs
e)
at System.Windows.Forms.Button.OnClick(EventArgs
e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs
mevent)
at System.Windows.Forms.Control.WmMouseUp(Message&
m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message&
m)
at System.Windows.Forms.ButtonBase.WndProc(Message&
m)
at System.Windows.Forms.Button.WndProc(Message&
m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message&
m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&
m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr
lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&
msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32
dwComponentID, Int32 reason, Int32
pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32
reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32
reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form
mainForm)
at WindowsFormsApplication1.Program.Main()
in C:\Documents and
Settings\agordon\My Documents\Visual
Studio
2008\Projects\GenerateWorklists\GenerateWorklists\Program.cs:line
18
at System.AppDomain._nExecuteAssembly(Assembly
assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String
assemblyFile, Evidence
assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object
state)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback
callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:

what is the meaning of this? i did not get this error yesterday and getting it today. the webpage opens no problem and the text Page: 1 is definitely there.

here is a similar issue also without solution
http://bytes.com/topic/c-sharp/answers/657812-webbrowser-documenttext-getting-problem

Answer 1

this is a known bug and microsoft doesn’t do anything about it for vs2008 at least. here’s a fix:

String lastsource = ((mshtml.HTMLDocumentClass)(((webBrowser1.Document.DomDocument)))).documentElement.innerHTML;
            webBrowser1.Document.OpenNew(true);
            webBrowser1.Document.Write(lastsource);  

now we can access DocumentText with no problems

dont forget to import mshtml as a reference