Gobal.asax出现异常:未将对象引用设置到对象的实例。
如何解决?
源码:
public class Global : System.Web.HttpApplication
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
public Global()
{
InitializeComponent();
}
protected void Application_Start(Object sender, EventArgs e)
{
string path=Server.MapPath( "status.xml ");
XmlDocument doc=new XmlDocument();
doc.Load(path);
XmlNode status=doc.SelectSingleNode( "total ");
Application.Lock();
Application[ "total "]=Convert.ToInt32(status.Value);
Application[ "onLineNo "]=0;
Application.UnLock();
}
protected void Session_Start(Object sender, EventArgs e)
{
this.Session.Timeout=20;
Application.Lock();
//异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。
Application[ "onLineNo "]=(int)Application[ "onLineNo "]+1;
Application[ "total "]=(int)Application[ "total "]+1;
Application.UnLock();
}
protected void Application_BeginRequest(Object sender, EventArgs e)
{
}
protected void Application_EndRequest(Object sender, EventArgs e)
{
}
protected void Application_AuthenticateRequest(Object sender, EventArgs e)
{
}
protected void Application_Error(Object sender, EventArgs e)
{
}
protected void Session_End(Object sender, EventArgs e)
{
Application.Lock();
Application[ "onLineNo "]=(int)Application[ "onLineNo "]-1;
Application.UnLock();
}
protected void Application_End(Object sender, EventArgs e)
{
string path= "status.xml ";
XmlDocument doc=new XmlDocument();
doc.Load(path);
XmlNode status=doc.SelectSingleNode( "status ");
status.Value=Application[ "total "].ToString();;
}
[解决办法]
从代码上没看出有什么问题,帮你顶了
