如何在vb.net，WPF中截取屏幕截图？

Question

因此，正如标题所述，我如何在vb.net，WPF中截屏，vb.net的常规代码用于截屏

 Dim bounds As Rectangle
Dim screenshot As System.Drawing.Bitmap
Dim graph As Graphics
bounds = Screen.PrimaryScreen.Bounds
screenshot = New System.Drawing.Bitmap(bounds.Width, bounds.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
graph = Graphics.FromImage(screenshot)
graph.CopyFromScreen(0, 0, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy)
screenshot.Save("d:\\dcap.jpg", Imaging.ImageFormat.Bmp)

不起作用，因为我无法在WPF中定义“图形”，也无法像在vb.net中一样定义绘图位图

所以，我能做什么？

Answer 1

您需要向System.Drawing添加引用和Imports指令。

Answer 2

我放弃了“自动”捕获屏幕（例如，由于未处理的异常）-太不一致了。

我曾经使用屏幕捕获来让用户用来记录他们遇到问题的表单（下面的异常处理程序中的代码。）现在，我启动了SnippingTool-使用户知道如何以任何方式使用该工具。

Friend Sub PrintScrn(ByVal ffrm As System.Windows.Forms.Form)
    Try
        If Not Environment.Is64BitProcess Then
            Process.Start("C:\Windows\sysnative\SnippingTool.exe")
        Else
            Process.Start("C:\Windows\system32\SnippingTool.exe")
        End If
    Catch ex As Exception
        If vbOK = MsgBox("Replace clipboard contents with an image of the form?", MsgBoxStyle.DefaultButton2 + MsgBoxStyle.OkCancel) Then
            Dim wid As Integer = ffrm.Width
            Dim hgt As Integer = ffrm.Height
            Dim bm As New Bitmap(wid, hgt)
            ' Draw the form onto a bitmap.
            ffrm.DrawToBitmap(bm, New Rectangle(0, 0, wid, hgt))
            My.Computer.Clipboard.SetImage(bm)
            MsgBox("Form image now on clipboard. Use Ctrl-V to paste into Word, Notes, Paint, etc.")
        End If
    End Try
End Sub

上下文：Vb.Net WinForm