相关疑难解决方法(0)

考虑以下代码:

public class Class1
{
    public static int c;
    ~Class1()
    {
        c++;
    }
}

public class Class2
{
    public static void Main()
    {
        {
            var c1=new Class1();
            //c1=null; // If this line is not commented out, at the Console.WriteLine call, it prints 1.
        }
        GC.Collect();
        GC.WaitForPendingFinalizers();
        Console.WriteLine(Class1.c); // prints 0
        Console.Read();
    }
}

现在,即使main方法中的变量c1超出范围并且在GC.Collect()调用时没有被任何其他对象进一步引用,为什么它没有在那里完成？

嘿家伙我有一个小问题,我似乎无法弄明白.我将DataGridView(它的内容)保存到xls文件.我没有遇到任何问题,除了我的任务管理器,它仍然显示它正在运行.我打过电话:

  xlApp.Application.Quit() 

这被声明为:

  Dim xlApp As New excel.Application

这似乎不起作用,但这与我让用户选择将其导出到Word文档时退出的方式相同.我不知道我哪里错了...

这是我的完整代码

Imports Word = Microsoft.Office.Interop.Word
 Imports Excel = Microsoft.Office.Interop.Excel

 Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    For x As Integer = 1 To 3500
        DataGridView1.Rows.Add(New Object() {"r" & x.ToString & "c1", "r" & x.ToString & "c2", "r" & x.ToString & "c3", "r" & x.ToString & "c4", "r" & x.ToString & "c5"})
    Next
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As …