“/bmcx”应用程序中的服务器错误。

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[NullReferenceException: 未将对象引用设置到对象的实例。]
   WebRegister.login.preLogin.btnAction()
   WebRegister.login.preLogin.Button1_Click(Object sender, EventArgs e)
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
   System.Web.UI.Page.ProcessRequestMain() +1292