visual-studio - Visual Studio : hotkeys to move line up/down and move through recent changes

Question

我正从 Eclipse 迁移到 Visual Studio .NET，并找到了除两个之外所有我喜爱的热键:

• 在 Eclipse 中，您可以按 ALT-← 和 ALT-→ 来访问您最近所做的更改，我经常使用它来返回到其他文件中的位置，然后返回。显然在 VS.NET 中 CTRL-- 和 CTRL-SHIFT--这样做，但它们似乎并不总是有效(例如，在笔记本电脑上，可能是减号的 numkey 问题)，并且似乎不遵循我在 Eclipse 中习惯的“我在哪里”的相同算法。有没有人让它工作并每天依赖它等等？
• 在 Eclipse 中，要向上或向下移动一行，请按 ALT-向上箭头 或 ALT-向下箭头你只需将它移动到代码中，直到到达你想要的位置，非常好。另外，要复制一行，您可以按 SHIFT-ALT-向上箭头 或 SHIFT-ALT-向下箭头。这两个热键甚至适用于您选择的行 block 。

有人发现 Visual Studio .NET 中的这些热键功能吗？

附录:

使用上述第二个功能的示例是将此处的底线向上移动到 for 循环中。在 Eclipse 中，您可以将光标放在 Console.WriteLine 上，然后按 ALT-(向上箭头)，我一直使用这种方法:按一下键即可上下移动行。

for (int i = 0; i < 10; i++) {

}
Console.WriteLine(i);

好的，用 no-selection-ctrl-c 来推断 Charlie 的想法来选择一行，在 Visual Studio 中，您可以将光标放在 Console.WriteLine 上，(不选择)按 CTRL-X，然后向上移动并按 CTRL-V。

Answer 1

建议的答案有效，但在如何保留现有粘贴缓冲区、当前选定的字符方面，它们都不像 Eclipse 那样好，并且它们不允许用户对一系列行进行操作。这是我想出的一个解决方案，它保留粘贴缓冲区、当前字符选择，并且可以在有或没有选择的情况下工作(可能会或可能不会跨越多行):

'' Duplicates the current line (or selection of lines) and places the copy
'' one line below or above the current cursor position (based upon the parameter)
Sub CopyLine(ByVal movingDown As Boolean)
    DTE.UndoContext.Open("CopyLine")
    Dim objSel As TextSelection = DTE.ActiveDocument.Selection

    ' store the original selection and cursor position
    Dim topPoint As TextPoint = objSel.TopPoint
    Dim bottomPoint As TextPoint = objSel.BottomPoint
    Dim lTopLine As Long = topPoint.Line
    Dim lTopColumn As Long = topPoint.LineCharOffset
    Dim lBottomLine As Long = bottomPoint.Line
    Dim lBottomColumn As Long = bottomPoint.LineCharOffset()

    ' copy each line from the top line to the bottom line
    Dim readLine As Long = lTopLine
    Dim endLine As Long = lBottomLine + 1
    Dim selectionPresent As Boolean = ((lTopLine <> lBottomLine) Or (lTopColumn <> lBottomColumn))
    If (selectionPresent And (lBottomColumn = 1)) Then
        ' A selection is present, but the cursor is in front of the first character
        ' on the bottom line. exclude that bottom line from the copy selection.
        endLine = lBottomLine
    End If

    ' figure out how many lines we are copying, so we can re-position
    ' our selection after the copy is done
    Dim verticalOffset As Integer = 0
    If (movingDown) Then
        verticalOffset = endLine - lTopLine
    End If

    ' copy each line, one at a time.
    ' The Insert command doesn't handle multiple lines well, and we need
    ' to use Insert to avoid autocompletions
    Dim insertLine As Long = endLine
    While (readLine < endLine)
        ' move to read postion, and read the current line
        objSel.MoveToLineAndOffset(readLine, 1)
        objSel.EndOfLine(True) 'extend to EOL
        Dim lineTxt As String = objSel.Text.Clone
        ' move to the destination position, and insert the copy
        objSel.MoveToLineAndOffset(insertLine, 1)
        objSel.Insert(lineTxt)
        objSel.NewLine()
        ' adjust the read & insertion points
        readLine = readLine + 1
        insertLine = insertLine + 1
    End While

    ' restore the cursor to original position and selection
    objSel.MoveToLineAndOffset(lBottomLine + verticalOffset, lBottomColumn)
    objSel.MoveToLineAndOffset(lTopLine + verticalOffset, lTopColumn, True)
    DTE.UndoContext.Close()
End Sub

'' Duplicates the current line (or selection of lines) and places the copy
'' one line below the current cursor position
Sub CopyLineDown()
    CopyLine(True)
End Sub

'' Duplicates the current line (or selection of lines) and places the copy
'' one line above the current cursor position
Sub CopyLineUp()
    CopyLine(False)
End Sub


'' Moves the selected lines up one line. If no line is
'' selected, the current line is moved.
''
Sub MoveLineUp()
    DTE.UndoContext.Open("MoveLineUp")
    Dim objSel As TextSelection = DTE.ActiveDocument.Selection
    ' store the original selection and cursor position
    Dim topPoint As TextPoint = objSel.TopPoint
    Dim bottomPoint As TextPoint = objSel.BottomPoint
    Dim lTopLine As Long = topPoint.Line
    Dim lTopColumn As Long = topPoint.LineCharOffset
    Dim lBottomLine As Long = bottomPoint.Line
    Dim lBottomColumn As Long = bottomPoint.LineCharOffset()

    Dim textLineAbove As TextSelection = DTE.ActiveDocument.Selection
    textLineAbove.MoveToLineAndOffset(lTopLine - 1, 1, False)
    textLineAbove.MoveToLineAndOffset(lTopLine, 1, True)
    Dim indentChange As Integer = CountIndentations(textLineAbove.Text) * -1

    ' If multiple lines are selected, but the bottom line doesn't
    ' have any characters selected, don't count it as selected
    Dim lEffectiveBottomLine = lBottomLine
    If ((lBottomColumn = 1) And (lBottomLine <> lTopLine)) Then
        lEffectiveBottomLine = lBottomLine - 1
    End If

    ' move to the line above the top line
    objSel.MoveToLineAndOffset(lTopLine - 1, 1)
    ' and move it down, until its below the bottom line:
    Do
        DTE.ExecuteCommand("Edit.LineTranspose")
    Loop Until (objSel.BottomPoint.Line >= lEffectiveBottomLine)
    ' Since the line we are on has moved up, our location in the file has changed:
    lTopLine = lTopLine - 1
    lBottomLine = lBottomLine - 1

    IndentBlockAndRestoreSelection(objSel, lBottomLine, lBottomColumn, lTopLine, lTopColumn, indentChange)

    DTE.UndoContext.Close()
End Sub

'' Moves the selected lines down one line. If no line is
'' selected, the current line is moved.
''
Sub MoveLineDown()
    DTE.UndoContext.Open("MoveLineDown")
    Dim objSel As TextSelection = DTE.ActiveDocument.Selection
    ' store the original selection and cursor position
    Dim topPoint As TextPoint = objSel.TopPoint
    Dim bottomPoint As TextPoint = objSel.BottomPoint
    Dim lTopLine As Long = topPoint.Line
    Dim lTopColumn As Long = topPoint.LineCharOffset
    Dim lBottomLine As Long = bottomPoint.Line
    Dim lBottomColumn As Long = bottomPoint.LineCharOffset()

    ' If multiple lines are selected, but the bottom line doesn't
    ' have any characters selected, don't count it as selected
    Dim lEffectiveBottomLine = lBottomLine
    If ((lBottomColumn = 1) And (lBottomLine <> lTopLine)) Then
        lEffectiveBottomLine = lBottomLine - 1
    End If

    Dim textLineBelow As TextSelection = DTE.ActiveDocument.Selection
    textLineBelow.MoveToLineAndOffset(lEffectiveBottomLine + 1, 1, False)
    textLineBelow.MoveToLineAndOffset(lEffectiveBottomLine + 2, 1, True)
    Dim indentChange As Integer = CountIndentations(textLineBelow.Text)


    ' move to the bottom line
    objSel.MoveToLineAndOffset(lEffectiveBottomLine, 1)
    ' and move it down, which effectively moves the line below it up
    ' then move the cursor up, always staying one line above the line
    ' that is moving up, and keep moving it up until its above the top line:
    Dim lineCount As Long = lEffectiveBottomLine - lTopLine
    Do
        DTE.ExecuteCommand("Edit.LineTranspose")
        objSel.LineUp(False, 2)
        lineCount = lineCount - 1
    Loop Until (lineCount < 0)
    ' Since the line we are on has moved down, our location in the file has changed:
    lTopLine = lTopLine + 1
    lBottomLine = lBottomLine + 1

    IndentBlockAndRestoreSelection(objSel, lBottomLine, lBottomColumn, lTopLine, lTopColumn, indentChange)

    DTE.UndoContext.Close()
End Sub

'' This method takes care of indenting the selected text by the indentChange parameter
'' It then restores the selection to the lTopLine:lTopColumn - lBottomLine:lBottomColumn parameter.
'' It will adjust these values according to the indentChange performed
Sub IndentBlockAndRestoreSelection(ByVal objSel As TextSelection, ByVal lBottomLine As Long, ByVal lBottomColumn As Long, ByVal lTopLine As Long, ByVal lTopColumn As Long, ByVal indentChange As Integer)
    ' restore the cursor to original position and selection
    objSel.MoveToLineAndOffset(lBottomLine, lBottomColumn)
    objSel.MoveToLineAndOffset(lTopLine, lTopColumn, True)
    If (indentChange = 0) Then
        ' If we don't change the indent, we are done
        Return
    End If

    If (lBottomLine = lTopLine) Then
        If (indentChange > 0) Then
            objSel.StartOfLine()
        Else
            objSel.StartOfLine()
            objSel.WordRight()
        End If
    End If
    objSel.Indent(indentChange)

    ' Since the selected text has changed column, adjust the columns accordingly:
    ' restore the cursor to original position and selection
    Dim lNewBottomColumn As Long = (lBottomColumn + indentChange)
    Dim lNewTopColumn As Long = (lTopColumn + indentChange)
    ' ensure that we we still on the page.
    ' The "or" clause makes it so if we were at the left edge of the line, we remain on the left edge.
    If ((lNewBottomColumn < 2) Or (lBottomColumn = 1)) Then
        ' Single line selections, or a bottomColumn that is already at 1 may still have a new BottomColumn of 1
        If ((lTopLine = lBottomLine) Or (lBottomColumn = 1)) Then
            lNewBottomColumn = 1
        Else
            ' If we have multiple lines selected, don't allow the bottom edge to touch the left column,
            ' or the next move will ignore that bottom line.
            lNewBottomColumn = 2
        End If
    End If
    If ((lNewTopColumn < 2) Or (lTopColumn = 1)) Then
        lNewTopColumn = 1
    End If

    ' restore the selection to the modified selection
    objSel.MoveToLineAndOffset(lBottomLine, lNewBottomColumn)
    objSel.MoveToLineAndOffset(lTopLine, lNewTopColumn, True)
End Sub


'' This method counts the indentation changes within the text provided as the paramter
Function CountIndentations(ByVal text As String) As Integer
    Dim indent As Integer = 0
    While (Text.Length > 0)
        If (Text.StartsWith("//")) Then
            Dim endOfLine As Integer = Text.IndexOf("\n", 2)
            If (Equals(endOfLine, -1)) Then
                ' The remaining text is all on one line, so the '//' terminates our search
                ' Ignore the rest of the text
                Exit While
            End If
            ' continue looking after the end of line
            Text = Text.Substring(endOfLine + 1)
        End If

        If (Text.StartsWith("/*")) Then
            Dim endComment As Integer = Text.IndexOf("*/", 2)
            If (Equals(endComment, -1)) Then
                ' This comment continues beyond the length of this line.
                ' Ignore the rest of the text
                Exit While
            End If
            ' continue looking after the end of this comment block
            Text = Text.Substring(endComment + 1)
        End If

        If (Text.StartsWith("{")) Then
            indent = indent + 1
        Else
            If (Text.StartsWith("}")) Then
                indent = indent - 1
            End If
        End If
        Text = Text.Substring(1)
    End While
    Return indent
End Function

我编辑了这篇文章，在 MoveLineUp() 和 MoveLineDown() 方法的开头添加 UndoContext 机制(由 Nicolas Dorier 建议)，并在其末尾关闭它。2011 年 11 月 23 日 - 我再次更新了此内容，以允许移动的行在跨越括号边界时缩进