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I doubt it will have a major performance impact, and I think factoring out strings is a good practice, I wish I did it more.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Hi, I have a VERY URGENT question on C# in ASP.NET. I am building an ASP.NET WEB application.
Does anyone know how to retreive BINARY image from a SQL Server 2005 Express Database and DISPLAY it on a Datagrid control?
I can manage to retreive the Binary Data, but I have absolutely no idea how it can be placed into the dataset, or accessed via the Databinder.
I can only display regular string data onto a Datagrid Control. This is my method in displaying string data onto a Datagrid:
1. From the Codebehind, I connect to the database.
2. I then use a DATASET and store the retreived data
3. In the HTML page, I use the Databinder to load the data (<%# DataBinder.Eval(Container.DataItem,"NAMEOFDATABASECOLUMN") %>
However this method only works for strings, I need to display Binary Image, can anyone help me?
Thank you!!!
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Infernojericho wrote: I have a VERY URGENT question
So, totally different from all the others ?
Infernojericho wrote: Does anyone know how to retreive BINARY image from a SQL Server 2005 Express Database and DISPLAY it on a Datagrid control?
Yes, you need to write a http handler, and have your images link through that. your problem is that an img tag requires a link to the image itself. So, you need to write a http handler that returns that image data, and then your databinding creates the link that that page, with an id that is used to seperately download the image. This means a lot of database hits, a better bet for a high load site is to put the images on your file system and store the path to them in yuor database.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Hi Christian, thanks for your reply (again).
I am afraid I am not very good in ASP.NET (I think you can tell that already), and I am quite lost.
Do you happen to know any sites on the web with similar examples?
Many thanks again.
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I think this[^] does what I mean.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Thanks, Christian. Greatly appreciated. I'll take a look at it right now.
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Sorry, but one last thing, I see that the example you provided is using VS.NET 2005, should I be worried if I am using VS.NET 2003? Thanks!!!
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That would mean that you can't use the project provided, but the overall concept will be the same.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Alright, many thanks again for the assist.
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Hello friends,
In my app i have to use a messagebox like javascript alert.
I found some code on net in C# to create a messagebox but it is not working in my applicatio as i am using UpdatePanel in it.
That code is working when used in separate without Updatepanel.....
It is generating some parsing error and gives it in a alert.
I am unable to find its solution. Please help me.......
Deepak Nigam
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Deepak Nigam wrote: In my app i have to use a messagebox like javascript alert.
It's not LIKE a javascript alert, a javascript alert is your only option in ASP.NET.
Deepak Nigam wrote: Please help me.......
Well, step one is to fix the code so you don't get the parsing error. If you told us the actual error message and gave us the code you're using, perhaps we could help more.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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how i can develope e-forum application using c# it's urjant required so help me..
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harshil_searcher wrote: it's urjant
That's a new one. Most people too lazy to do their own work, say their question is urgent.
Read the article I link to in my sig. Then, break down your task into steps and work out how to do them, asking questions here when you get stuck.
OR, contact your rentacoder client and tell them you're not really a programmer at all, and offer to return their money.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Hi,
I had a written a Windows dll in VC++ fours years back. I wasnt to use the dll and call its methods from
How do i call the methods in dll from my C# project. Do I need to write a COM dll to use it in my .Net solution. If yes, how ?
Please suggest me the way to go about it.
Thanks & Regards
Gagan
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Member 2503963 wrote: Do I need to write a COM dll to use it in my .Net solution
No. You can just use p/invoke to call methods on your object, and you can define structs that mirror any structs used in the C++ code Check out www.pinvoke.net for lots of examples, which are all using Win32 APIs
Member 2503963 wrote: If yes, how ?
Use the wizard to create a dll, import your C++ code into it ( so, it's a C++ COM dll ), and then provide a COM interface to yuor methods.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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I want to search the hashtable with one key... that key is present in hashtable or not.
eg.
durimg Page_load i have fill the hashtable...
hTable.Add(100,"Bala");
hTable.Add(105,"Mala");
hTable.Add(110,"Raja");
hTable.Add(115,"Kala");
hTable.Add(120,"Praba");
in button click
i will give the input from textbox 115, i need to search the hashtable with the key from textbox
and display the answer as key is : 115 value is kala like this...
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Have you read the documentation? The Hastable class has a ContainsKey[^] method that is used to detect the presence of a particular key.
BTW, unless you are still working with .NET 1.x, you are better off using the generic Dictionary[^] class instead of a Hashtable. The generic Dictionary class allows you to specify exactly what data types the key and value should be, thus enforcing type safety in your data.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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guys i want to make a forum using ASP.NET
which also has the facility of sign in and register
and i want to create it by own
dont provide me any download links of source codes
if u hav any ideas jst tell me where shud i start from
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Well, this is a pretty top level question. First of all, do you have a clear spec of the features you want. For example, do you want to support threaded messages ?
Then, you need to work out what skills you need - do you know how to use ASP.NET ? Do you know how to use SQL Server, or whatever DB you will use ?
You can use the built in login control, but I prefer to write my own, you just store a value in the session to tell you that a user is logged in, and check that value from a base class, to redirect people who are not.
The rest is pretty simple, you just need to work out a database format for messages, and the UI to display them.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Hello There
I'm using Microsoft visual studio 2005 to design an asp.net site but when i try to run it it shows no error except this annoying message "The page cannot be displayed" .
My latest activity was that i install smart ftp .
i have windows xp home edition.
i forgot to mention that when i upload my pages to the web site it works just fine.
Thanks alot
modified on Saturday, April 12, 2008 1:45 PM
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Is this file based or IIS? Is it possible you need to run asp_regiis?
only two letters away from being an asset
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I don't have IIS just the web developer .
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You may probaby not have set the Start Page in the project.
Thanks
Laddie
Kindly rate if the answer was helpful
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Thanks for replying
but i don't need to set the start page because i'm pressing F5 to debug the page.
i tried also aspnet_regiis.exe and nothing happened .
this kind of problems is annoying 
Thanks .
Asaad
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