asp.net 网站运行时错误
很急的问题，在我本机上运行（ASP.NET网站）没有任何问题，放到远程服务器上就出现了如下错误：
Server Error in '/' Application.
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Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 33: User user = mu.M_SelectUserByID(id);
Line 34: this.lblID.Text = id.ToString();
Line 35: this.lblTel.Text = user.QB_TEL.ToString();
Line 36: this.lblState.Text = user.QB_STATE.ToString();
Line 37: this.lblNum.Text = user.QB_NUM.ToString();
Source File: d:\suntek\jxtweb\User\ShowUser.aspx.cs Line: 35
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
User_ShowUser.Page_Load(O
相关问答：
select top 12 * from Product where [id] not in (select top 12 [id] from Product)
这样可以分页，但是我在后面想加个条件
select top 12 * from Product where [id] not in (select top 12 [id] from Prod ......
前段时间碰到一道面试题如下：
test.aspx页面有如下代码：
Response.Write(Test.GetDate());
Test类如下：
public class Test
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在弹出框中点击一个按钮，怎么调转到另一个浏览器，并且在该浏览器打开两个页面
你的意思应该是
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<script type="text/javascript">
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CheckBox选择组件是一个程序中都经常的组件。在程序设计中使用到该组件，一般都不会只使用到一个，往往是以多个此类组件的形式出现的。在ASP.NET页面中如果要使用到多个CheckBox组件，除了添加多个CheckBox组件在页� ......
