高手请进(分数不够再加)
用C#写一个事件类,我在调用该事件类时,总是报错(未将对象引用设置到对象实例.)
我的调用代码(VB.Net写的)如下:
public class frmTest
Inherits System.Windows.Forms.Form
dim WIthEvents obj as UserInfo 'UserInfo为事件类
Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
obj = New UserInfo("01", "liubo", "liubo") '此行报错
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub