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help
Joined: 09 Jul 2003
Posts: 1
help
Dear Mr/Madam:
I`m a beginer.I have some problems with learning ASP.NET.I can`t
find enough explanation for the error massage.
The program likes below:
(1)global.asax
<script language = "C#" runat = "server" >
protected void Application_Start(Object sender,EventArgs e)
{
Application["user_sessions"] = 0;
}
protected void Session_Start(Object sender,EventArgs e)
{
Application.Lock();
Application["user_sessions"] = (int)Application["user_sessions"]
+1;
Application.Unlock();
}
protected void Session_End(Object sender,EventArgs e)
{
Application.Lock();
Application["user_sessions"] = (int)Application["user_sessions"]-
1;
Application.Unlock();
}
</script>
(2)config.web
<configuration>
<system.web>
<compiliation debug = "true" />
<sessionstate cookieless = "false" />
</system.web>
<configuration>
(3)my.aspx
<%@ page language = "C#" debug = "true" %>
<html>
<head>
<script language = "C#" runat = "server" >
private void Page_Load(Object sender,EventArgs e)
{
Visitors.Text = "there is<b>"+Application
["user_sessions"].ToString()+"</b>visitors!";
}
</script>
<title></title>
</head>
<body>
<asp:Label id = "Visitors" runat = "server" />
<br>
</body>
</html>
The error message as follows:
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 6: public void Page_Load(Object sender,EventArgs e)
Line 7: {
Line 8: count.Text = Application["user_session"].ToString();
Line 9: }
Line 10: public void But1_Click(Object sender,EventArgs e)
How to deal with it?Wating for your reply.
Yours:leiyzju
July 9
Joined: 09 Jul 2003
Posts: 1
help
What is count? It dosen`t look like you`ve declared it anywhere.
Doug Wilson | Internet Applications Developer | iX Webhouse
Tel : +2731 5669250 | Fax : +2731 5669260 | www.ix.co.za
Cell : 084 8000 255 | ICQ : 173155300 | www.autoworld.co.za
-----Original Message-----
From: leiyzju [mailto:leiyzju@...]
Sent: 09 July 2003 03:46
To: AspNetAnyQuestionIsOk@yahoogroups.com
Subject: [AspNetAnyQuestionIsOk] help
Dear Mr/Madam:
I`m a beginer.I have some problems with learning ASP.NET.I can`t
find enough explanation for the error massage.
The program likes below:
(1)global.asax
<script language = "C#" runat = "server" >
protected void Application_Start(Object sender,EventArgs e)
{
Application["user_sessions"] = 0;
}
protected void Session_Start(Object sender,EventArgs e)
{
Application.Lock();
Application["user_sessions"] = (int)Application["user_sessions"]
+1;
Application.Unlock();
}
protected void Session_End(Object sender,EventArgs e)
{
Application.Lock();
Application["user_sessions"] = (int)Application["user_sessions"]-
1;
Application.Unlock();
}
</script>
(2)config.web
<configuration>
<system.web>
<compiliation debug = "true" />
<sessionstate cookieless = "false" />
</system.web>
<configuration>
(3)my.aspx
<%@ page language = "C#" debug = "true" %>
<html>
<head>
<script language = "C#" runat = "server" >
private void Page_Load(Object sender,EventArgs e)
{
Visitors.Text = "there is<b>"+Application
["user_sessions"].ToString()+"</b>visitors!";
}
</script>
<title></title>
</head>
<body>
<asp:Label id = "Visitors" runat = "server" />
<br>
</body>
</html>
The error message as follows:
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 6: public void Page_Load(Object sender,EventArgs e)
Line 7: {
Line 8: count.Text = Application["user_session"].ToString();
Line 9: }
Line 10: public void But1_Click(Object sender,EventArgs e)
How to deal with it?Wating for your reply.
Yours:leiyzju
July 9
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[Non-text portions of this message have been removed]
Joined: 09 Jul 2003
Posts: 4
help
try
count.Text = Convert.ToString(Application["user_session"]);
(check the function - it might be ConvertTo.String()
or
count.Text = ((int)Application["user_session"]).ToString();
etc
Steve.
.
----- Original Message -----
From: "leiyzju" <leiyzju@...>
To: <AspNetAnyQuestionIsOk@yahoogroups.com>
Sent: Wednesday, July 09, 2003 2:46 PM
Subject: [AspNetAnyQuestionIsOk] help
> Dear Mr/Madam:
> I`m a beginer.I have some problems with learning ASP.NET.I can`t
> find enough explanation for the error massage.
> The program likes below:
> (1)global.asax
> <script language = "C#" runat = "server" >
> protected void Application_Start(Object sender,EventArgs e)
> {
> Application["user_sessions"] = 0;
> }
> protected void Session_Start(Object sender,EventArgs e)
> {
> Application.Lock();
> Application["user_sessions"] = (int)Application["user_sessions"]
> +1;
> Application.Unlock();
> }
> protected void Session_End(Object sender,EventArgs e)
> {
> Application.Lock();
> Application["user_sessions"] = (int)Application["user_sessions"]-
> 1;
> Application.Unlock();
> }
> </script>
> (2)config.web
> <configuration>
> <system.web>
> <compiliation debug = "true" />
> <sessionstate cookieless = "false" />
> </system.web>
> <configuration>
> (3)my.aspx
> <%@ page language = "C#" debug = "true" %>
> <html>
> <head>
> <script language = "C#" runat = "server" >
> private void Page_Load(Object sender,EventArgs e)
> {
> Visitors.Text = "there is<b>"+Application
> ["user_sessions"].ToString()+"</b>visitors!";
> }
> </script>
> <title></title>
> </head>
> <body>
> <asp:Label id = "Visitors" runat = "server" />
> <br>
> </body>
> </html>
>
> The error message as follows:
>
> 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 6: public void Page_Load(Object sender,EventArgs e)
> Line 7: {
> Line 8: count.Text = Application["user_session"].ToString();
> Line 9: }
> Line 10: public void But1_Click(Object sender,EventArgs e)
>
>
> How to deal with it?Wating for your reply.
> Yours:leiyzju
> July 9
>
>
>
>
> To unsubscribe from this group, send an email to:
> AspNetAnyQuestionIsOk-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
Joined: 16 Oct 2003
Posts: 1
help
i m developin a database in asp.net i m using sql server as back end... i m
using data grid to view data all the connection is ok but the problem is that
when ever i run my project i can not view my data grid ... all other lable are
visible i have check its visible property n it is true wht should i do ??
* ... an ever lasting friend ... *
*Üróój Çm£*
---------------------------------
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[Non-text portions of this message have been removed]
Joined: 16 Oct 2003
Posts: 1
help
We`d prebably need to see your DataGrid databinding
code for that - - are you sure, that after you select
all your data, etc, that you do a DataGrid.DataBind
call?
And to answer your other question, Visible=True is the
default, so you would not need to set Visible=true
unless somewhere in your code, you have already set it
to false.
--- Üróój Çm£ <useemeen@...> wrote:
> i m developin a database in asp.net i m using sql
> server as back end... i m using data grid to view
> data all the connection is ok but the problem is
> that when ever i run my project i can not view my
> data grid ... all other lable are visible i have
> check its visible property n it is true wht should i
> do ??
>
>
>
> * ... an ever lasting friend ... *
>
> *Üróój Çm£*
>
>
> ---------------------------------
> Do you Yahoo!?
> The New Yahoo! Shopping - with improved product
> search
>
> [Non-text portions of this message have been
> removed]
>
>
> ------------------------ Yahoo! Groups Sponsor
>
> To unsubscribe from this group, send an email to:
> AspNetAnyQuestionIsOk-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
__________________________________
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The New Yahoo! Shopping - with improved product search
http://shopping.yahoo.com
Joined: 21 Dec 2005
Posts: 1
help
hi
how can we place combo box in datagrid in windows application using c#
language. please any one knows reply me.
radha
Send instant messages to your online friends http://in.messenger.yahoo.com
[Non-text portions of this message have been removed]
Joined: 11 Jan 2006
Posts: 1
help
Hi All,
I have a problem in rendering my web page.
The page contains a radio button which has some attribute value
having some database field value.
Problem comes when this data field contains data having double quote (").
The page gives a runtime error "unterminated string constant"
Please help me........
Best Regards,
_____________________________________
Tarun Kumar Garg
[Non-text portions of this message have been removed]
Joined: 11 Jan 2006
Posts: 38
help
Can you show us the code, and an example of a line with this problem?
On 1/11/06, tarun garg <tarun.garg@...> wrote:
>
> Hi All,
> I have a problem in rendering my web page.
> The page contains a radio button which has some attribute value
> having some database field value.
> Problem comes when this data field contains data having double quote (").
> The page gives a runtime error "unterminated string constant"
> Please help me........
>
>
> Best Regards,
> _____________________________________
> Tarun Kumar Garg
[Non-text portions of this message have been removed]
Joined: 13 Jan 2006
Posts: 3
help
Sounds as though you don`t the quotes set up correctly. Could you
post the code that is causing the error?
--- In AspNetAnyQuestionIsOk@yahoogroups.com, "tarun garg"
<tarun.garg@m...> wrote:
>
> Hi All,
> I have a problem in rendering my web page.
> The page contains a radio button which has some attribute
value
> having some database field value.
> Problem comes when this data field contains data having double
quote (").
> The page gives a runtime error "unterminated string constant"
> Please help me........
>
>
> Best Regards,
> _____________________________________
> Tarun Kumar Garg
>
>
>
> [Non-text portions of this message have been removed]
>
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