how to add x y point to existing layer in arcgis in c#.net

Hello every one

I have : ArcGis 9.3 Desktop ,ArcSde 9.2 , VS.net 2010 , sql server 2008

now I have an mxd project , this project I have map  which on it I have a layer for projecting points
the first time I entered the points used the arcmap from tools>add xy data and so on I imported the coordinates .

now I want to make some kind of web form useing asp.net , to enter the X Y to the table of the points and then a point will appear on the map for each record entered

I need your help for guiding me where to start and which tools should I use
and if there any step by step tutorials

thanks in advance
palservAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

palservAuthor Commented:
any idea please ?
0
mrfixit22Commented:
Open Arc Catalog , then open your project, Do you have a geoedatabase or just the MXD which is a list of short cuts to your files. While in ARC catalog you will make a new shape (POINT) file. If you have a geodatabase import that point file into your geodatabase.  Close ARC Catalog and open ARCMAP. open you mxd and add the point file you made if you do not have geodatabase.  If you have a geodatabase you will not have to iadd it because you did it in ARC Catalog.  Now open spread sheet software.  If you have a list of the coordinates in a text file you can import them or you can make a spread sheet.  Now go to tools and iadd xy data., make sure your target file is you point file you made.  import you text file or spread sheetis
Make sure the coordinates are in the format 31/07/30  91/22/00 or 31.125 91.375
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
GIS/GPS Programming

From novice to tech pro — start learning today.