I've created SQLite database and I want to open and use it in xamarin,developing in CrossPlatform.
In android studio,I was using SQLiteOpenHelper to access to the database.
I want to know if there is a way to it in Xamarin.forms
Related
I'm building a MS Project VSTO tool (written in C#) that in many instances needs to either read or write data from a field in MS Project. Since I don't always know what field will contain the data I need, I many times need to allow the user the option to select the field they want. Getting all the basic fields is easy, my issue arises if a user is in a Project Server environment and using Enterprise fields. So my question is 2 fold:
Is there a way to check if the user is in a Project Server environment?
Is there a way to easily get all of the custom enterprise fields that are being used in MS Project? I'd like to be able to capture these fields in a collection like a list or array.
Is there a way to check if the user is in a Project Server
environment?
Look at the collection of Profiles to see if there is a project server one and check its ConnectionState to see if it's connected to a project server.
Is there a way to easily get all of the custom enterprise fields that
are being used in MS Project? I'd like to be able to capture these
fields in a collection like a list or array.
If you have access to the project server, take a look at this page, Accessing Project Online enterprise custom fields. Without access to the server I suggest:
Loop through all tables and their fields to find enterprise ones.
Allow the user to enter the name of enterprise fields and store that information for future use so that it's a one-time 'setup' for the user.
Dear all I am struggling to bind my .xml data to GridView in my UWP project. I could not find any example how to bind .xml data to GridView. Could you please help me giving a sample code which shows how to bind .xml data UWP GridView. Please note that my .xml data is very large (5000 rows).
Thank you very much.
Of course, database can be used in UWP apps. If your UWP app target on version 16299 and later, you can use both SQLite and SQL Server database base on your selection. If your app need to be compatible with previous version, you can only use the SQLite database, since SQL Server database begin to support on version 16299.
There are many info on the internet to introduce to use SQLite and SQL Server database, but they are all using C#, it would be similar on VB project.
Here are the introduction using SQLite database:
https://learn.microsoft.com/en-us/windows/uwp/data-access/sqlite-databases
https://blogs.windows.com/buildingapps/2017/02/06/using-sqlite-databases-uwp-apps/#YGMf6G0GsZzBG4YG.97
Here is the detailed introduction using SQL Server database:
https://learn.microsoft.com/en-us/windows/uwp/data-access/sql-server-databases
I have created a functioning LightSwitch (Visual studio 2012 Pro) application...
Now it's time to publish! The only problem is that I can't seem to figure out how to change the schema name to something other than dbo.
That is, I don't want the output tables to be dbo.XXXX, I want them to be my_schema.XXXX instead.
Also, note that the database is on SQL Server 2005.
Does anyone have suggestions on how to achieve this?
Thanks!
Update: Sorry for not being specific. I don't want to change the schema for existing tables in my database. I want my LightSwitch application to use the new schema. I don't mind publishing it and then modifying the schema on the tables, if I can then somehow also modify the LightSwitch application to use the new schema. But ideally, there would be a way to tell LightSwitch to use a different schema when it publishes.
For those who don't know what LightSwitch is, it is a Microsoft .Net Rapid Application Development tool for SilverLight business applications, and is built into Visual Studio 2012. My application is written in VB.Net
You can't change the schema name for an intrinsic database (the database that is created with LightSwitch). Maybe you'll be able to in V3, but you can't currently do it in V1 or V2. To achieve this, you'll have to create the database in something like SSMS (SQL Server Management Studio, then attach to it as an external data source.
Seeing as you've already done all the creating in LightSwitch, you could publish it as is, then attach to it as I mentioned above. I hope you don't have screens created, because unless you want to manually edit all of the lsml, you won't be able to use the attached database in any already created screens.
Any time you need to do something "out of the ordinary" with LightSwitch's database, you need to create it outside of LightSwitch, then attach to it. Why? LightSwitch was originally created with the idea in mind that the users didn't need to know anything about SQL Server.
Let me preface this by saying that I know this is a stupid way to go about this, but it needs to be handled in this way.
I need to make an application that from a master database creates a number of access database files (tables of a larger db), then these are manually given to users who fill in data, the database files are emailed back to a user who, through the application, combines them again.
The only part of this that I am unsure about is problematically creating the access db's. I have read that through Microsoft Jet OLE DB Provider and Microsoft ADO Ext I can create them (the tables and data), but I also need forms.
I have yet to start writing anything and this is away from my area of work, so any insight/links would be much appreciated.
Also, I would hope to be able to write this in the free express version of visual studio. Are there components needed that would prevent me from this? Thanks.
If you are developing in vb.net then why do you need forms in the Access database? Create a vb.net application for the "client" pcs with the required forms reading and writing to the Access database.
If however you do need to have forms in an Access database. Create a database with the required forms and code. Distribute the code/form database and the data database. Add a method to the code/form database the creates links to the tables in the "data" database.
Just a basic question. Learning Linq to SQL and some nHibernate. I am using the mvc tutorial and they drag and drop tables onto the visual studio designer to create the classes and wire up everything.
When I experimented with nHibernate I had to do lots with xml files. Does nHibernate have anything that is "easy" like Linq to SQL or is this drag and drop for Linq to SQL so basic that when I want to do something "real" it won't matter that Visual Studio does this for me (at this basic level)? In other words, the further I go with Linq to SQL, I'll eventually have to handle config files like I do with nHibernate.
Look at Castle's ActiveRecord framework. It replaces the use of XML config files with the use of Attributes directly on the class/property declaration. Also, a tool called ActiveWriter integrates with Visual Studio and allows connecting to a data source and generating the object model!
There is no "native" support like you see with LINQ to SQL. However, there are third party add-ins that will allow you to do something similar with nHibernate. My favorite is this one:
http://sourceforge.net/projects/nhibernateaddin
To use it:
Create a data connection to a
database that contains the structure
you are going to code against (your
development database).
Add a new NHibernate plug-in item
(via add new item) to your project
that will contain you domain objects.
In the property window add the data
connection string from the data
connection you just created (this
isn't automated yet).
Finally, you drag and drop your tables
from your data connection to the
NHibernate plug-in object and when
saved your mapping files and you
domain objects are generated. To use
it you create a data connection to a
database that contains the structure
you are going to code against (your
development database).