Application问题，急，急，急！！！

Question

Application["dbname"]为空造成的。试试在global.asax中的Application_Start中初始化之。

Answer 1

在Application_Start里面初始化
Application.Add("dbname","urvalue");

Answer 2

string dbname;
if (Application["dbname"] != null)
{
      dbname=Application["dbname"].ToString();
}
else
{
      dbname= "your database connection string";
      Application["dbname"] = dbname;
}

Answer 3

if(Application["dbname"]!=null)
{
string dbname=Application["dbname"].tostring();}