为什么Guid.NewGuid()会生成一个空guid？

Question

我有一个创建空Guid的Guid.NewGuid()调用.

什么会导致这样的问题,我该如何解决？

编辑:代码:

<WebMethod()> _
Public Function CreateRow(rowValue As String) as String
    Dim rowPointer As Guid = System.Guid.NewGuid()
    Dim rowPointerValue As String = rowPointer.ToString()

    Try
        Dim result as Integer = SqlHelper.ExecuteNonQuery(ConnectionString, "Sproc_Name", rowValue, rowPointer)

        Return result
    Catch ex as Exception
        Throw ex
    End Try
End Function

编辑:结果是rowPointer最初被传递给SqlHelper而不是rowPointerValue - 这当然是作为空传递的,如答案中所指出的那样.将其更改为rowPointerValue/rowPointer.ToString()修复了该问题.

Answer 1

这是VB.NET中的一个老问题.只有调试可视化器被破坏了.

http://www.thesoftwaredevotional.com/2008/12/guid-visualizer-broken-in-vbnet.html