在VS.NET2003中使用Macro生成自定义异常代码

 
写程序的时候，每次到了要自定一个异常，总是要啰里啰唆的敲上一大堆代码，而且这些代码细想起来也就无非是声明一个从System.Exception继承的类，然后在类中添加三个构造函数和一个自定错误的消息字符串，为了简化这种体力劳动，我利用VS2003自带的宏编辑器写了一小段代码，来帮助我自动完成这些东西。
1.首先打开你的宏编辑器（在VS2003种按下ALT+F11）： 把下面的代码copy带编辑器中.




Imports EnvDTE
Imports System.Diagnostics
Imports Microsoft.Office.Core
    Sub AddException()
        Dim input As String
        Dim expName As String
        Dim expMsg As String
        Dim split As String() = Nothing
        Dim delimStr As String = ",.:;"
        Dim delimiter As Char() = delimStr.ToCharArray()
        Dim objTextDoc As TextDocument
        Dim objEditPt_Begin As EditPoint
        Dim objEditPt_End As EditPoint
        input = InputBox("Input as : ExceptionName;Message", "Auto Complete Exception", String.Empty)
        If input.Length = 0 Then
            Return
        End If
        split = input.Split(delimiter)
        expName = split(0)
        If split.Length = 2 Then
            expMsg = split(1)
        Else
            expMsg = "General Exception of " & expName
        End If

        DTE.UndoContext.Open("AddException", False)
        objTextDoc = DTE.ActiveDocument.Object("TextDocument")
        objEditPt_Begin = objTextDoc.Selection.ActivePoint.CreateEditPoint()
        objEditPt_Begin.Insert("public class " & expName & ": System.Exception " & vbCrLf)
        objEditPt_Begin.Insert("{" & vbCrLf)
        objEditPt_Begin.Insert("const string errMsg = """ & expMsg & """;" & vbCrLf)
        objEditPt_Begin.Insert(vbCrLf)
        objEditPt_Begin.Insert("public " & expName & "():base( errMsg )" & vbCrLf)
        objEditPt_Begin.Insert("{}" & vbCrLf)
        objEditPt_Begin.Insert(vbCrLf)
        objEditPt_Begin.Insert("public " & expName & "(string auxMessage):base( String.Format( ""{0} - {1}"",errMsg, auxMessage ))" & vbCrLf)
        objEditPt_Begin.Insert("{}" & vbCrLf)
        objEditPt_Begin.Insert(vbCrLf)
        objEditPt_Begin.Insert("public " & expName & "(string auxMessage, Exception inner ):base( String.Format( ""{0} - {1}"",errMsg, auxMessage ), inner)" & vbCrLf)
        objEditPt_Begin.Insert("{}" & vbCrLf)
        objEditPt_Begin.Insert("}" & vbCrLf)
        objEditPt_End = objTextDoc.Selection.ActivePoint.CreateEditPoint()
        objEditPt_Begin.LineUp(13)
        objEditPt_Begin.SmartFormat(objEditPt_End)
        DTE.UndoContext.Close()
    End Sub
2.在MacroExplorer中用右键菜单使这个宏运行起来。



3.宏运行后，然后会出现一个输入框，按照如下格式输入：ExceptionName splitter ExceptionMsg



例如：MyException;This is my exception
回车后就会在文件中生成你想要的Exception代码了，瞧一瞧，感觉还挺Cool 吧?你还可以在Option->keyboard中给这个Macro分配一个快捷键，例如：ALT+1，再试试，感觉写代码的痛苦程度至少减轻了10%。：）