I am new to visual studio.
I made an app using excel vba that converts words into code 128 and display them.
I tried to recreate it, with visual studio, but I have no idea how to create a file that store data.
For example, the barcode code 128 table should be accessible through code to convert a simple text into a barcode view.
I know so far how to create service based database on sql, add column, and rows, but I need to know how to have (or create) a file with stored data to work with (like in excel, you create a sheet filled with data, and then, you can adress it using vba)
You've a really good tutorial's on the internet who helps you building a local database on visual studio.
I'll give you a initial steps to build one:
1st: After you create your project, Go to Project > Add New Item > And Choose Service-based Database
2nd: Open your database located on Solution Explorer with the name: nameyouchoose.mdf
3rd: It will open a DataSource on the Server Explorer where you can add your tables, records, etc...
Good tutorials:
docs
devu.com
Related
I'm busy writing a small app and I only want a database to load small amounts of data, in other words I don't need the functionality of SQL.
So I've installed filehelpers, but it seems very limited in the sense that I can read/write and even append data, but it seem impossible to delete one row of data in a table?
Does anyone know how to do this with filehelpers or point me to a different solution where I can just add a local db to my app without any other external software required?
PS. My visual studio does not have the "create local db" from the item selection.
For something like this, I'd use an embedded SQLite database. It gives you the best of both worlds, one file database for local data and most of the features of SQL.
See here: https://sqlite.org/
On their download page, they have lots of stuff and a plugin for VS:
https://sqlite.org/download.html
I'm beginner to visual studio and I want to create local DB for c# project
so i installed sql server compact/sqllite for it
after installing it I created a new connection. Then build table
and then executed the table to see option of table I created under drop down menu "table"
I don't understand how to edit that table
when I select edit top 200 rows I see the screen as in image
just one rows. I can't see 200 rows
and on top of that I can't even write in column
is there any special way to do it
or did I miss something that I should have done
'Edit top 200 rows' means edit the data, not the table design (known as the table schema). If there's no data in the table—which if you just created it sounds like the case—you'll need to enter some before you can edit it.
You enter data in Visual Studio by clicking the cell that you want to edit.
Visual Studio 2015 no longer supports design tools for SQL Server CE, so you probably created a SQL Server LocalDB file instead (note no space in the word). That said, you can install Erik EJ's excellent SQL Server CE/SQLite ToolBox extension (more info here).
So I have created a database in C#, and the mdf is in a specified location also attached to the same server (it is a backup database).
Now I want to know how to copy all the tables together with its data, definitions, and stored procedures from one table to the newly created one. Basically, they would be the same database with a different name and will be stored in a different location. I don't intend to use .bak by the way if someone suggests it.
Will I be able to do this in a query? or better yet, in C#? Or maybe I'm doing this wrong. Any suggestions will be welcome with open arms.
Summary
With Sql Server Management Studio (SSMS) you can right click on your database, select tasks, then generate scripts. This will bring up a wizard. In the Choose Objects step, you can select a radio button that will allow you to select your database tables individually. The next step Set Scripting Options will give you the ability to create a script in a single file, a file per object (table, sproc, etc). At this point you can click next through the rest of the wizard or review the steps.
If you use a script file, this can be used to recreate your database. Just modify the USE [YourDbNameHere].
Reference
https://msdn.microsoft.com/en-us/library/hh245282.aspx
This is a very noobish question:
I don't understand SQL. I'm trying to make a generic connection to an empty SQL database in C#. I don't want to make tables in advance, I just want to be able to open the connection.
Every "connectionstring" I try results in "InvalidOperationException" so I need some help understanding the proper syntax to connect to a SQL data file in Visual Studio.
What I have done is gone to "Add -> New Item -> Service-based Database"
This gives me a "Database1.mdf" in the solution explorer.
Now I want to open a connection through C# to this file at which point I can use SQL strings to manipulate the file.
I believe the next step is to use: SQLConnection SQLConn = new SQLConnection(" ... ");
But I don't know what to put for the "server" or the "database" in the connectionstring.
Can someone tell me the most basic way to connect to a "Service-based Datasource" in C#?
Will this "service-based database" be included in the final compile? E.g. if I compile a finished executable, will each installation come with its own local SQL database?
The service based database will not be embedded in the dll. See the last section of the below (in bold) to see how to obtain the connection string.
From an MSDN article (http://msdn.microsoft.com/en-us/library/vstudio/ms233763%28v=vs.110%29.aspx):
To create a project and a database file:
Create a Windows Forms project that's named SampleDatabaseWalkthrough.
See Creating Solutions and Projects.
On the menu bar, choose Project, Add New Item.
The Add New Item dialog box appears so that you can add items that are appropriate in a windows Form project.
In the list of templates, scroll down until Service-based Database appears, and then choose it.
Name the database SampleDatabase, and then choose the Add button.
The Data Source Configuration Wizard opens.
On the Choose a Database Model page, choose the Dataset icon, and then choose the Next button.
On the Choose Your Database Objects page, no database objects are available because the database is new.
Choose the Finish button to create the database and dataset and add them to the project.
The properties window for the database shows the connection string and the location of the primary .mdf file for the database. To display this window, choose the Server Explorer tab, expand the Data Connections node, open the shortcut menu for the database, and then choose Properties.
I'm losing the way when I'm look after controlling db and then populate it in aspx gridview, so I prefer to do this within Visual Studio.
I have multiple text files that I want to create for them SQL Server db and create and load the text files data into db tables based on column value.
[if text file column a value = 1 then
if sql db table 1 exist import else
create sql db table 1 and import]
All tables would be with the same structure.
If you direct me how to do this or guide me to a good tutorial. I read that I need to add a reference sqlmdo something to create db within vs but as it's not there I downloaded it but I didn't know how to add it to the assemblies. Main idea is to control and do this using vs....really thanks in advance.