Html 在System.Windows.Forms.WebBrowser控件中打开本地文件
我正在Windows窗体WebBrowser控件中呈现以下简单HTML:Html 在System.Windows.Forms.WebBrowser控件中打开本地文件,html,vb.net,winforms,url,Html,Vb.net,Winforms,Url,我正在Windows窗体WebBrowser控件中呈现以下简单HTML: <HTML> <HEAD></HEAD> <BODY bottommargin='0' leftmargin='10' rightmargin='0' topmargin='10'> <span>Programs</span><br /><br /> <a href='file:///C:\Temp\pro
<HTML>
<HEAD></HEAD>
<BODY bottommargin='0' leftmargin='10' rightmargin='0' topmargin='10'>
<span>Programs</span><br /><br />
<a href='file:///C:\Temp\prog1.cnc'>Program 1</a><br />
<a href='file:///C:\Temp\prog2.cnc'>Program 2</a><br />
<a href='file:///C:\Temp\prog3.cnc'>Program 3</a><br />
</BODY>
</HTML>
或者不带文件
前缀:
<a href='\\servername\Temp\prog1.cnc'>Program 1</a>
处理导航事件的代码:
Private Sub-WebViewer\u导航(ByVal sender作为对象,ByVal e作为System.Windows.Forms.WebBrowserNavigatingEventArgs)处理WebViewer.Navigating
Dim filepath作为String=e.Url.OriginalString
如果File.Exists(filepath)存在,则
Dim progInfo作为新文件信息(文件路径)
如果progInfo.Extension.ToLower=“.cnc”,则
WebViewer.ScrollBarsEnabled=True
WebViewer.DocumentText=File.ReadAllText(e.Url.OriginalString).Replace(Chr(13),“
”)
如果结束
e、 取消=真
如果结束
端接头
我已经找到了一份暂时可以让我继续工作的工作,但如果有人对所描述的行为有解释,我仍然很感兴趣
通过伪造远程文件路径,我可以像对实际远程文件那样触发导航
事件,然后在导航
事件中,我重新写入路径以重新引用本地文件,如下所示:
设置文档文本
更改:
programHtml.AppendLine(String.Format("<a href='file://{0}'>{1}</a><br />", progInfo.FullName, progInfo.Name.ToUpper))
Private Shared Function LoadProgramHtml(ByVal programFiles() As String) As String
Dim programHtml As New StringBuilder
If ProgramFiles.Length > 0 Then
programHtml.AppendLine("<HTML>")
programHtml.AppendLine("<HEAD></HEAD>")
programHtml.AppendLine("<BODY bottommargin='0' leftmargin='10' rightmargin='0' topmargin='10'>")
programHtml.AppendLine("<span>Programs</span><br /><br />")
For Each program As String In ProgramFiles
Dim progInfo As New FileInfo(program)
programHtml.AppendLine(String.Format("<a href='file://{0}'>{1}</a><br />", progInfo.FullName, progInfo.Name.ToUpper))
Next
programHtml.AppendLine("</BODY>")
programHtml.AppendLine("</HTML>")
End If
WebViewer.DocumentText = programHtml.ToString()
End Function
Private Sub WebViewer_Navigating(ByVal sender As Object, ByVal e As System.Windows.Forms.WebBrowserNavigatingEventArgs) Handles WebViewer.Navigating
Dim filepath As String = e.Url.OriginalString
If File.Exists(filepath) Then
Dim progInfo As New FileInfo(filepath)
If progInfo.Extension.ToLower = ".cnc" Then
WebViewer.ScrollBarsEnabled = True
WebViewer.DocumentText = File.ReadAllText(e.Url.OriginalString).Replace(Chr(13), "<br />")
End If
e.Cancel = True
End If
End Sub
programHtml.AppendLine(String.Format("<a href='file://{0}'>{1}</a><br />", progInfo.FullName, progInfo.Name.ToUpper))
programHtml.AppendLine(String.Format("<a href='{0}' target='_top'>{1}</a><br />", progInfo.FullName.ToLower.Replace("c:", "\\faked"), progInfo.Name.ToUpper))
'note the `\\faked`
Dim filepath As String = e.Url.OriginalString.Replace("\\faked", "c:")
If File.Exists(filepath) Then
....