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Alright, I've been working on a ASP.NET/C# web site "app" for the last few weeks, and I have some questions...
Is there any such thing as a global scope for the web page? I'd like to load a couple of lists from a database just one time, and I waat those lists globally available throughout the web site. The idea is to keep from hammering the database every time a certai page is displayed.
How is something like this accomplished? Can it be?
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
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"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Each web application lives in a given HTTP Context. This context is global to all pages and code running within it. Within the context is a Session object and a Cache object, both of which can be used to store arbitrary data items. A page intrinsically exposes both, but they can also be accessed outside of a page by using the static Context property Current.
The Session object that can be used to hold data that is particular to a given user. It is tied to the user session, is visible only to that particular session, and will only live as long as the session.
The Cache can be used to hold data for all objects in a given context. The context cache is not tied to a particular session, is visible to all sessions within the context, and does not expire default (barring an IIS is restart.) To control the lifetime of data in the cache, there are several options for setting expiration policies.
I'd recommend that you check out the HttpSessionState and HttpContext objects in the MSDN documentation. Hope that helps to get you started. 
[EDIT x2] Fixed readability.
--Jesse
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you can make use of sessions
My name is suresh dayma. I have just completed my graduation in commerce with 69%. I have also done 2 years of Vocational Banking Course from Chetana college with 71%. I have done GNIIT Course from Bandra branch. I like to do programming
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Cache.Insert("YourDataTable", DataSet.Tables[0]);
//To retreive the datatable
DataTable dt;
if (Cache["YourDataTable"] != null)
{
dt = (DataTable) Cache["YourDataTable"];
}
-- modified at 9:15 Wednesday 16th August, 2006
-- modified at 9:21 Wednesday 16th August, 2006
how vital enterprise application are for proactive organizations leveraging collective synergy to think outside the box and formulate their key objectives into a win-win game plan with a quality-driven approach that focuses on empowering key players to drive-up their core competencies and increase expectations with an all-around initiative to drive up the bottom-line. But of course, that's all a "high level" overview of things
--thedailywtf 3/21/06
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The second bit of code about the cache is more applicable to yourself - the cache can also be given dependencies so that it can invalidate itself if some kind of data store (file or DB) changes. Accessing the cache is considerable more performant than repeated hits to the DB.
Cache is global across the application - session is global to a particular user within the app.
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Hello
Can anyone tell me the major diferences between 2003 and 2005 in ADO.NET i? where can i find a tutorial about this?
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Hi there,
I need to read data from a excel spreadsheet, show on a webpage and insert into a sql server 2005 database. Need to do it in asp.net 2.0, using ado.net and VB(or C# samples will also help).
Can anyone point me to the right place?
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There are a few ways that you can go about this, depending on how complex the spreadsheet is that you wish to read. In a simple case, you may want to consider using ADO to tap Excel as a data source. You can find a nice article on doing so here[^].
If that doesn't work for you, you may wish to consider purchasing one of the commercial components that allow you to work with the Excel native format without Office being present on the machine, such as this[^] one.
As a last resort, it is possible to install Office on the server and use the Office interop assemblies to automate Excel. Please note that I label this the last resort, because it is slower, consumes more resources, and requires client software to be installed on a server (potentially increasing the attack surface.)
Hope that helps.
--Jesse
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Can ASP.NET script and HTML server controls be placed in an XSL file?
And if so are there any guides to using them this way?
My program uses a single page with an XML control that accepts an SQL "FOR XML" query result and as its source and an XSL file to format it.
In one case I would like the results of the query sent to drop down selection boxes.
I would like to do so without having to make an entirley new page for it, so was thinking about having HTML server controls and the coresponding scripts for those controls within the XSL file that formats the particular query.
Any advice would be appreciated.
Thanks.
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I have 2 questions
Question # 1
============
Can I resize Master Page like frames.
If not then anyother solution.
Question # 2
============
I have 2 Iframes with IDs (LeftFrame, BodyFrame)
How I get BodyFrame ID from any server control event of LeftFrame page.
Know Yourself Then Grow Yourself.
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KamalJKhan wrote: Can I resize Master Page like frames.
No, you can't, as a content tag in a master page doesn't have any specific size. A content tag doesn't represent a rectangular portion of the page, but a section of the code for the page.
---
b { font-weight: normal; }
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I have IFRAME control on my page. I can set the 'src' property at design time, to load desired page into that control.
But how to load a page into that IFRAME control programatically? I mean:
This IFRAMe hase ID="aaa". I would like to be able to write in aspx.cs file:
aaa.url = "Page1.aspx" or something similar
How is that possible?
thank you in advance for any help
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You can use attributes property to achieve the required thing. something like this:
iframeid.Attributes.Add("src","yourpage.aspx");
Best Regards,
Apurva Kaushal
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Exactly, thank you very much
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always welcome..
Best Regards,
Apurva Kaushal
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Hi!
I have to do paging in thr datagrid., for that I wrote the code :
private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
DataGrid1.CurrentPageIndex=e.NewPageIndex;
models();
}
In models() Func... I retrieve the value from the DB.
It shows the value and that the Page no also: 1,2,3.... Bur if i clicks the 2nd page..
It goes to next form.. it doesn't show the values...
How can we solve this one..?
How can we do the paging in the DataList..?
T.Prabu
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Hi Prabs,
Let me Know it in detail what is ur doubt in datagrid paging .
Happy Coding,
with regards
Satips
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Hi Satips!
As i told earlier.,
I got the values in the grid, and that page no s also..
It shows the first page, If i clicks the 2 nd page no .,
it redirects to another page (instead of displaying remaining data...)
If u want to chk my code let me know i vl send u....
And then, How can v achieve the pagiong in data list..?
T.Prabu
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Hi Satips!
Thanks for ur response...
I vl go through that link.,
If i hv any doubt i vl let u know.,
Bye.,
T.Prabu
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can anyone plz tell me how to do Sorting for dynamically created column in a datagrid using C#
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