- #Visual studio 2017 sql server database project how to
- #Visual studio 2017 sql server database project code
You’ll be given the chance to rename it, but for this demo I’ll just take the default name. Once you do, you’ll see a new file appear in the solution. Using the same project we’ve been using over the last few posts, right click on the project name, and pick “Snapshot Project” on the menu. Once you have a snapshot there are several useful things you can do with them. A snapshot captures a copy of your database project as it exists at the time you take the snapshot.
#Visual studio 2017 sql server database project how to
We shall discuss how to navigate the database and manipulate data in next lesson.A new feature of SSDT, one not found in VS Database Projects, is the ability to do snapshots. TxtState.Text = MyDataTbl.Rows(MyRowPosition)("State").ToString() TxtName.Text = MyDataTbl.Rows(MyRowPosition)("ContactName").ToString() MyDatAdp = New SqlDataAdapter("Select* from Contacts", M圜n)ĭim MyDataRow As DataRow = MyDataTbl.Rows(0) Server\MSSQL11.SQL2012\MSSQL\DATA\Test.mdf "&_ “User Instance=True Integrated Security=SSPI” M圜n.ConnectionString = "Data Source=TOSHIBA-PC\SQL2012 AttachDbFilename=C:\Program Files\Microsoft SQL Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Private MyDatAdp As New SqlDataAdapter Private M圜mdBld As New SqlCommandBuilder Private MyDataTbl As New DataTable Private M圜n As New SqlConnection Private MyRowPosition As Integer = 0 TxtState.Text = MyDataTbl.Rows(MyRowPosition)(“State”).ToString()
#Visual studio 2017 sql server database project code
The code is as follows: Private Sub showRecords() ShowRecords() is a sub procedure created to show data in the text boxes. * The two fields being referenced here are ContactName and State. For example, we can write the following to access the first row of the table and present the data via two text boxes with the name txtName and txtState respectively: Dim MyDataRow As DataRow = MyDataTbl.Rows(0) We can achieve this by using the DataRow object. To access data in the DataTable means that we need to access the rows in the table. M圜mdBld = New SqlCommandBuilder(MyDatAdp)Īfter filling up the DataTable, we need to write code to access the data. The statements are as follows: MyDatAdp = New SqlDataAdapter(“Select* from Contacts”, M圜n) Having created the above of objects, you need to include the following statements in the Sub Form_Load event to start filling the DataTable with data from the data source. Private M圜mdBld As New SqlCommandBuilderīesides that, we need to declare a variable to keep track of the user’s current row within the data table. Other than that, you should also create an instance of the SqlCommandBuilder which is used to manipulate data such as updating and deleting data in the data table and send the changes back to the data source. Besides, you also need to create an instance of the DataTable. The next step is to create an instance of the SqlDataAdpater in our code so that we can populate the DataTable with data from the data source. After establishing the connection to the database, you can open the database using the following syntax:Įstablishing a connection to a database in Visual Basic 2017 using SqlConnection alone will not present anything tangible things to the user to manipulate the data until we add more relevant objects and write relevant codes to the project. You need to change the reference to the SQL server as well as the path to database file Test.mdf in your local drive. “User Instance=True Integrated Security=True Connection Timeout=30 ” M圜n.ConnectionString = “ Data Source=Data Source=.\SQLEXPRESS AttachDbFilename=C:Documents\vb2017\data\Test.mdf ” & _ Having created the instance of the SqlConnecton object, the next step is to establish a connection to the data source using the SQL ConnectionString property. To initialize the variable to a new SqlConnection object, we use the following syntax: Since we will work with SQL database in our example, we will use the SqlConnection object. OleDbConnection is used to access OLEDB data such as Microsoft Access whilst SqlCOnnection is used to access data provided by Microsoft SQL Server. Now we are ready to connect to this new offers a number of connection objects such as OleDbConnection, SqlConnection and more. Enter a few data in the table and click Save All to save the data. After creating the database, build a table called Contacts and create two fields and name them ContactName and State respectively. We shall name this database file as test.mdf. Since we are using SQL Server 2016 as the database engine, we will use SQL Server Management Studio (SSMS) to create a database with the mdf extension. Before we begin, let’s create a new database. In Visual Basic 2017, we need to create a connection to a database before we can access its data. 35.1 Creating the Connection to a Database using ADO.NET