1)command 中ExecuteReader ExecuteNonQuery 两者的区别 返回值 感觉两个都一样 能举个实例吗? ExecuteScalar返回查询所返回的结果集中第一行的第一列 感觉没有用处吧???==============================================================2)Global.asax中 why?怎么会出错呢?!
Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
Response.Write("Application is Starting...")
' 在应用程序启动时激发
End Sub Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
Response.Write("Session is Starting...")
Session.Timeout = 1
' 在会话启动时激发
End Sub
响应在此上下文中不可用。 Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
行 32: Response.Write("Application is Starting...")
行 33: ' 在应用程序启动时激发
行 34: End Sub
======================================================================3)for(int i=0;i<4;i++)
{
htmltext.Replace("$htmlformat["+i+"]",format[i]);
} +i+ 什么意思?! C#还是C++ ???
Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
Response.Write("Application is Starting...")
' 在应用程序启动时激发
End Sub Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
Response.Write("Session is Starting...")
Session.Timeout = 1
' 在会话启动时激发
End Sub
响应在此上下文中不可用。 Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
行 32: Response.Write("Application is Starting...")
行 33: ' 在应用程序启动时激发
行 34: End Sub
======================================================================3)for(int i=0;i<4;i++)
{
htmltext.Replace("$htmlformat["+i+"]",format[i]);
} +i+ 什么意思?! C#还是C++ ???
这个中的加号是拼接字符串用的,等于
"$htmlformat["加上i再加上"]"
htmltext.Replace("$htmlformat["+i+"]",format[i]);
----------------------------------
+是连字符,跟&一样的。
Response.Write("Application is Starting...")
' 在应用程序启动时激发
End Sub
怎么回事 为什么没有write ? 应该没错吧
很全面
要根据实际应用选相应的方法,提高运行效率
Global.asax中Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
Response.Write("Application is Starting...")
' 在应用程序启动时激发
End Sub
调试的时候
响应在此上下文中不可用。 Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
行 32: Response.Write("Application is Starting...")
行 33: ' 在应用程序启动时激发
行 34: End Sub请问那里出错了??