Disable WebBrowser caching - vb.net

Question

I am new here and really want your help.
I've been trying to disable my webbrowser's cache but I get overload resolution failed because no accessible "Navigate" without a narrowing conversion. I'm stuck and I don't know what to do anymore, I did search all the possible solutions but found no answer.
Here's my code:
Private Sub WebBrowser1_DocumentCompleted(sender As Object, e As WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
Const navNoReadFromCache As Long = 4
Const navNoHistory As Long = 2
Const navNoWriteToCache As Long = 8
Dim navflags As Long
navflags = navNoHistory + navNoWriteToCache
WebBrowser1.Navigate("url", 4)
End Sub
End Class
Original Error message is:
Error 2 Overload resolution failed because no accessible 'Navigate' can be called without a narrowing conversion:
'Public Sub Navigate(urlString As String, newWindow As Boolean)': Argument matching parameter 'newWindow' narrows from 'Integer' to 'Boolean'.
'Public Sub Navigate(urlString As String, targetFrameName As String)': Argument matching parameter 'targetFrameName' narrows from 'Integer' to 'String'.

Answer 1

.NET WebBrowserControl doesn't have overload what accept int or long argument.
So, you can't set BrowserNavConstants (this for IWebBrowser2 not .NET WebBrowserControl) value to .NET WebBrowserControl.
I found following page:
http://msdn.microsoft.com/en-us/library/40x214wa%28v=vs.110%29.aspx
The WebBrowser control stores Web pages from recently visited sites in a cache on the local hard disk. Each page can specify an expiration date indicating how long it will remain in the cache. When the control navigates to a page, it saves time by displaying a cached version, if one is available, rather than downloading the page again.
Use the Refresh method to force the WebBrowser control to reload the current page by downloading it, ensuring that the control displays the latest version.
Updated.
I try the code following, that looks like work fine :
private void button1_Click(object sender, EventArgs e) {
webBrowser1.Navigate("http://www.google.co.jp");
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) {
webBrowser1.Refresh(WebBrowserRefreshOption.Completely);
}
This loads page two times.

Answer 2

So after some time of searching and testing different methods I came with a good result.
Shell("RunDll32.exe InetCpl.cpl, ClearMyTracksByProcess 8", vbHide)
This is the code I used to delete the cache that held my web browser on a blackscreen.
What it does is search for the Internet Explorer's Temporary files and deletes them, the vbHide has to be kept next to the comma to work, what is does is hide the window that pops us telling you it deletes temp files.