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Enterprise custom field input by look up to external data MS Project Server

Hi i want to set a project custom field input like autocomplete look up from external data / external lists.
I am using MS Project Server 2013 system which in Sharepoint platform.
Actually, I have plan by modifying MS Project Server solution starter which made for custom field can look up from user group data. I have tried but it is difficult to change many things.
Is there any easiest way? Or maybe there is custom solution that has been made?
Please explain in simple way in c# programming or maybe javascript.

I'm not sure if there are any new features for that in 2013, but we synchronize external sources into Lookup tables assigned to Enterprise Custom Fields. We do that using PSI service MSDN Doc. And we do that using C# because only .NET supports DataSets which are the main data container to communicate with a Project Server through PSI

Sharepoint connect to another SQL server?

Here is the task I'm checking:
1) have a product database, which is managed by another application (it has no relation with sharepoint).
2) now, my boss want to have an application within the sharepoint portal to search this database, plus, audit the searches, i.e. who searched what at what time....
There is no problem if this is a regular asp.net application. But, what's the best way to do this in sharepoint?
My plan is to:
use team site template (or blank template), create a webpart. then have UI, and gridview to show the result.
is this the way to do? I try to find an example of using gridview in webpart, but cannot find it. Is there any limitation of using asp.net control in webpart? what about use ajax toolbox control in webpart? any example?
thanks

Roughly there are 2 approaches you could go for:
The webpart approach, just as your describe it. You can use an ASP.NET gridview with no problems in your webpart. As such, a webpart is nothing more (simplified...) than a user control with some dress up.
Go for BDC/BCS. This will allow you to consume the external database and show the information as be it 'native' SharePoint data. This has the added benefit that the content can be made searchable from within SharePoint. Using this approach you also do not have to create a UI to present the data, as SharePoint will present it using the out of the box view pages, etc.
The downside of the webpart approach (option 1) is that if you have multiple front end servers in your farm you need to handle the session in a way (e.g. by setting up sticky sessions on your loadbalancer, or by sharing your session somewhere centrally (in a db for instance)), as you don't want users to switch between servers in one session while they are using your webpart probably.
The downside of option 2 is that at first it might seem complex, but let that not scare you away :-)
http://msdn.microsoft.com/en-us/magazine/ee819133.aspx

You should code this as one or several web parts. You can use pretty much any asp.net controls in web parts. If you want to use any third party tools like DevExpress you must ensure that the binaries are strongly typed so that you will be able to register them in web.config, note that the registration can be done by the wsp deployment if correctly configured.
Web parts behave as any .net code except for the fact as I mentioned all references assemblies must be "safe".

Which local database is suitable for Windows 8 Store Apps?

I'am programming a Windows 8 Store App (Metro Design) with C# and XAML using Visual Studio 2012.
There is no need for a database server with multi user support etc.
I want to store my data in a local database and don't know which database is suitable for my needs.
Maybe SQLite? Or are there solutions that fits better for Windows Store Apps and integrates better in Visual Studio?
The app is kind of a calender and the database should store the user data that consists of the dates, tasks and so on.

SQLite is supported for WinRT.
http://visualstudiogallery.msdn.microsoft.com/23f6c55a-4909-4b1f-80b1-25792b11639e

SQLite is the recommended database to be used for Win 8 Apps.
Links for implementing the same
http://timheuer.com/blog/archive/2012/08/07/updated-how-to-using-sqlite-from-windows-store-apps.aspx
http://code.msdn.microsoft.com/windowsapps/Using-SQLite-Asynchronously-b8372137
https://visualstudiogallery.msdn.microsoft.com/23f6c55a-4909-4b1f-80b1-25792b11639e

Ok, this is a great question that I had to learn the hard way. By default WinRT applications do NOT have access to, directly at least, to any type of database structure. This means no Express, Compact, CE, SQLite etc.
There are three ways around this. Do not use a database and instead use a local file structure where you store and retrieve your data. XML works very nicely with this because you can maintain many of the same features a database would give you.
The second option is to use IndexedDB. It is similar to a cookie style local storage model where files are saved in your apps local apps folder.
The third and final option is to use web services. WinRT does have access to the internet which means you can write API and WebServices that can be called. This does mean that you need to have a server running which is connected to a master database. When your app needs data it calls your web service and obtains what it needs.
Overall, for the application you are describing the first option may best suite your needs. Keep a local XML file in your apps folder and read/write from it.

My question was marked as a duplicate of this question (although it was about C++ not C#). I thought I should still post my findings here. C++ apps have another alternative:
Extensible Storage Engine (ESE)
The list of all such API available for Store apps can be found on this link under the section Jet.

As one of variant:
Devart LinqConnect for Metro – a fully-functional high-performance ORM solution for developing Windows Store applications using either of LINQ or ADO.NET to access data.
http://code.msdn.microsoft.com/windowsapps/A-Simple-Windows-Store-85f29843#content
or next link can be usefull to
http://social.technet.microsoft.com/wiki/contents/articles/18417.windows-store-app-with-a-sqlite-database.aspx

Using a database or table structure within program

Basically all I want is to be able to create like a self contained database in my Windows Forms application, I do not want to connect to a server or anything like that with SQL Server, I just want like a small database in the application that can handle a few transactions.
Like for instance if I create a Windows Forms application then it would have its own small database in it and when deploying it.. it will save rows there and stuff. I remember hearing about a plug in, it started with a CT or something don't recall, but it would be a plugin for Visual Studio.
Any help would be much appreciated.
Regards

You can use SQL Server Compact or SQLite (ADO.NET provider is available here). Both are embedded database engines that run in-process. You don't need to install anything, just include the appropriate DLLs with your application.

Visual Studio has no problem providing you with just such a database. Just right click your project, add new item, and select SQL Server Database. The database created will be part of your project and can be deployed as needed.

If you have a limited amount of data you can just right-click the project and Add a DataSet. Then you can define multiple tables in the .xsd and store multiple rows. in the .xml. Then you can write some simple code in the .xsd code-behind to auto load and save defaults and even pull back rows of data. I typically use this approach for storing a single record in each table. It will also work with multiple records in each table. There's a point where if you start to get a lot of data you'll probably wish you had used something like SQL Compact Edition or something similar that you bundle with your app.

you can use sqlLite,this is the website
http://www.sqlite.org/
or you can use access too

What is the best way to develop a C# project with a MySQL backend?

So I'm using C# 2010 Express and wondering what the best toolset is for developing a C# project with a MySQL backend? I know what if you use SQL Server Compact edition from within C# it will let you access the DB directly from the IDE. Is there a similar way to integrate the development with a remote MySQL Database?
Also, is MySQL a versatile enough solution for writing a program with C#? I am looking to build a seperate PHP web site (a reporting portal) that will access the MySQL data. I'd love to go open source all the way, but it seems like C# is the best app to create the app I'm trying to create (touch screen interface for data entry).

Whenever I program a database related homepage I always use HeidiSql and mysql. Both of them are easy to figure out and fast to use.
From their site:
HeidiSQL is a lightweight, Windows
based interface for MySQL databases.
It enables you to browse and edit
data, create and edit tables, views,
procedures, triggers and scheduled
events. Also, you can export structure
and data either to SQL file, clipboard
or to other servers.
All you do is install Mysql, set up a pass and username. and it's up and running.
Then all that's left is to install Heidisql. Heidisql it is a free program. If you need more details on how to attach heidi to your database please do write again.

There is
http://www.devart.com/dbforge/mysql/fusion/
But it's not free and is a plugin which you can't use with Express. There is no way to do this with Express as you can't add onto the basic functionality.