打印其中包含的 Web 浏览器控件后关闭表单
Closing form after printing a web browser control contained in it
我正在通过 html 和 vb.net winforms 中的 Web 浏览器控件进行一些随机打印
这是我的代码
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim myWebBrowser As New WebBrowser
AddHandler myWebBrowser.DocumentCompleted, AddressOf DocumentCompleted
myWebBrowser.Navigate("http://www.bing.com")
End Sub
Private Sub DocumentCompleted(ByVal sender As Object, ByVal e As WebBrowserDocumentCompletedEventArgs)
With DirectCast(sender, WebBrowser)
If .ReadyState = WebBrowserReadyState.Complete Then
.Print()
End If
End With
End Sub
End Class
我希望表格在打印后关闭。现在,如果我在 .Print()
之后写 Me.Close()
,则不会打印任何内容。我应该怎么做才能实现这一目标?
感谢任何帮助。
::更新::
根据@Noseratio 的建议,我尝试在我的 html 中处理事件 onafterprint
,并尝试使用 ObjectFoprScripting
设置为我的表单来调用 Me.Close()
。但那是在没有任何打印的情况下触发 close 方法。
这是我的代码
script tag in my html page
<script>
function window.onafterprint() {
window.external.Test('called from script code');
}
</script>
VB.net Code of my form
Imports System.IO
Imports Microsoft.Win32
Imports System.Security.Permissions
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
<System.Runtime.InteropServices.ComVisibleAttribute(True)> _
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
WebBrowser1.AllowWebBrowserDrop = False
WebBrowser1.IsWebBrowserContextMenuEnabled = False
WebBrowser1.WebBrowserShortcutsEnabled = False
webBrowser1.ObjectForScripting = Me
WebBrowser1.DocumentText = File.ReadAllText("localprint.htm")
End Sub
Public Sub Test(ByVal message As String)
MessageBox.Show(message, "client code")
Me.BeginInvoke(DirectCast(Sub() Me.Close(), MethodInvoker))
End Sub
Private Sub WebBrowser1_DocumentCompleted(sender As System.Object, e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
WebBrowser1.Print()
End Sub
End Class
找到我的解决方案
无需处理 javascript 中的 onafterprint
。
这是我所做的,
步骤 1
在我的项目中添加了对 SHDocVw.dll
的引用。这可以在 c:\windows\system32
文件夹中找到。
步骤 2
My new updated code
Imports System.IO
Imports Microsoft.Win32
Imports System.Security.Permissions
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
<System.Runtime.InteropServices.ComVisibleAttribute(True)> _
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
WebBrowser1.AllowWebBrowserDrop = False
WebBrowser1.IsWebBrowserContextMenuEnabled = False
WebBrowser1.WebBrowserShortcutsEnabled = False
WebBrowser1.DocumentText = File.ReadAllText("localprint.htm")
End Sub
Private Sub WebBrowser1_DocumentCompleted_1(sender As System.Object, e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
Dim wb As WebBrowser = TryCast(sender, WebBrowser)
Dim ie As SHDocVw.InternetExplorer = DirectCast(wb.ActiveXInstance, SHDocVw.InternetExplorer)
AddHandler ie.PrintTemplateInstantiation, AddressOf IE_OnPrintTemplateInstantiation
AddHandler ie.PrintTemplateTeardown, AddressOf IE_OnPrintTemplateTeardown
'Just to get reference of the webBrowser1 control in ie events, uncomment the below line
'ie.PutProperty("WebBrowserControl", DirectCast(wb, Object))
wb.Print()
End Sub
Private Sub IE_OnPrintTemplateInstantiation(pDisp As Object)
' The PrintTemplateInstantiation event is fired when the print job is starting.
End Sub
Private Sub IE_OnPrintTemplateTeardown(pDisp As Object)
' The PrintTemplateTeardown event is fired when the print job is done.
'Just to get reference of the webBrowser1 control, uncomment the below line
'Dim iwb2 As SHDocVw.IWebBrowser2 = TryCast(pDisp, SHDocVw.IWebBrowser2)
'Dim wb As WebBrowser = DirectCast(iwb2.GetProperty("WebBrowserControl"), WebBrowser)
Me.Close()
End Sub
End Class
我正在通过 html 和 vb.net winforms 中的 Web 浏览器控件进行一些随机打印 这是我的代码
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim myWebBrowser As New WebBrowser
AddHandler myWebBrowser.DocumentCompleted, AddressOf DocumentCompleted
myWebBrowser.Navigate("http://www.bing.com")
End Sub
Private Sub DocumentCompleted(ByVal sender As Object, ByVal e As WebBrowserDocumentCompletedEventArgs)
With DirectCast(sender, WebBrowser)
If .ReadyState = WebBrowserReadyState.Complete Then
.Print()
End If
End With
End Sub
End Class
我希望表格在打印后关闭。现在,如果我在 .Print()
之后写 Me.Close()
,则不会打印任何内容。我应该怎么做才能实现这一目标?
感谢任何帮助。
::更新::
根据@Noseratio 的建议,我尝试在我的 html 中处理事件 onafterprint
,并尝试使用 ObjectFoprScripting
设置为我的表单来调用 Me.Close()
。但那是在没有任何打印的情况下触发 close 方法。
这是我的代码
script tag in my html page
<script>
function window.onafterprint() {
window.external.Test('called from script code');
}
</script>
VB.net Code of my form
Imports System.IO
Imports Microsoft.Win32
Imports System.Security.Permissions
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
<System.Runtime.InteropServices.ComVisibleAttribute(True)> _
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
WebBrowser1.AllowWebBrowserDrop = False
WebBrowser1.IsWebBrowserContextMenuEnabled = False
WebBrowser1.WebBrowserShortcutsEnabled = False
webBrowser1.ObjectForScripting = Me
WebBrowser1.DocumentText = File.ReadAllText("localprint.htm")
End Sub
Public Sub Test(ByVal message As String)
MessageBox.Show(message, "client code")
Me.BeginInvoke(DirectCast(Sub() Me.Close(), MethodInvoker))
End Sub
Private Sub WebBrowser1_DocumentCompleted(sender As System.Object, e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
WebBrowser1.Print()
End Sub
End Class
找到我的解决方案
无需处理 javascript 中的 onafterprint
。
这是我所做的,
步骤 1
在我的项目中添加了对 SHDocVw.dll
的引用。这可以在 c:\windows\system32
文件夹中找到。
步骤 2
My new updated code
Imports System.IO
Imports Microsoft.Win32
Imports System.Security.Permissions
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
<System.Runtime.InteropServices.ComVisibleAttribute(True)> _
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
WebBrowser1.AllowWebBrowserDrop = False
WebBrowser1.IsWebBrowserContextMenuEnabled = False
WebBrowser1.WebBrowserShortcutsEnabled = False
WebBrowser1.DocumentText = File.ReadAllText("localprint.htm")
End Sub
Private Sub WebBrowser1_DocumentCompleted_1(sender As System.Object, e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
Dim wb As WebBrowser = TryCast(sender, WebBrowser)
Dim ie As SHDocVw.InternetExplorer = DirectCast(wb.ActiveXInstance, SHDocVw.InternetExplorer)
AddHandler ie.PrintTemplateInstantiation, AddressOf IE_OnPrintTemplateInstantiation
AddHandler ie.PrintTemplateTeardown, AddressOf IE_OnPrintTemplateTeardown
'Just to get reference of the webBrowser1 control in ie events, uncomment the below line
'ie.PutProperty("WebBrowserControl", DirectCast(wb, Object))
wb.Print()
End Sub
Private Sub IE_OnPrintTemplateInstantiation(pDisp As Object)
' The PrintTemplateInstantiation event is fired when the print job is starting.
End Sub
Private Sub IE_OnPrintTemplateTeardown(pDisp As Object)
' The PrintTemplateTeardown event is fired when the print job is done.
'Just to get reference of the webBrowser1 control, uncomment the below line
'Dim iwb2 As SHDocVw.IWebBrowser2 = TryCast(pDisp, SHDocVw.IWebBrowser2)
'Dim wb As WebBrowser = DirectCast(iwb2.GetProperty("WebBrowserControl"), WebBrowser)
Me.Close()
End Sub
End Class