Question

在VS 2017 VB.Net中，调试器发现错误时会在错误的行停止。但是不一致，也不与行尾不一致有关。该行为很奇怪，因为到目前为止，我发现它似乎只影响对象和字符串数组，而其他引起错误的数组则可以正确识别。创建带有一些按钮的表单，在此示例中，我使用了4。输入以下代码作为按钮处理程序。请注意，除了数组类型之外，每个处理程序中的代码都是相同的。调试器将在错误的行停止，但仅在具有对象和字符串数组的处理程序中停止。它停在有错误的那一行之后。我环顾四周，看到了行尾不一致的解决方案，但是VS并没有抱怨，这是一个全新的项目，除了下面看到的代码之外，没有其他代码，即使行尾不一致，调试器为什么也应该只为我误导我某种类型？今天早上，我花了几个小时在错误的阵列中寻找一个不存在的错误。干杯。

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim myArray(1) As Integer 'Note: INTEGER ok
        myArray(1) = 0 'This line is valid and executes ok
        myArray(2) = 0 'This line is correctly identified as an out of bounds error
        myArray(1) = 0
    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Dim myArray(1) As Object ' Note: OBJECT not ok
        myArray(1) = 0 'This line is valid and executes ok
        myArray(2) = 0 'This Line should show as an out of bounds error but it doesn't
        myArray(1) = 0 'This line is still valid but is now incorrectly identified as the error line
    End Sub

    Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
        Dim myArray(1) As Double 'Note: DOUBLE ok
        myArray(1) = 0 'This line is valid and executes ok
        myArray(2) = 0 'This line is correctly identified as an out of bounds error
        myArray(1) = 0
    End Sub

    Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
        Dim myArray(1) As String ' Note: STRING not ok
        myArray(1) = 0 'This line is valid and executes ok
        myArray(2) = 0 'This Line should show as an out of bounds error but it doesn't
        myArray(1) = 0 'This line is still valid but is now incorrectly identified as the error line
    End Sub
End Class

VS2017误导性错误线识别

0 个答案: