In the grid, add a row for each of the following entries: Column name By adding rows to the grid, you'll add columns in the table. The Table Designer opens and shows a grid with one default row, which represents a single column in the table that you're creating. Right-click on Tables and select Add New Table. In Server Explorer, expand the Data Connections node, and then expand the SampleDatabase.mdf node. You'll also create a foreign key to specify how records in one table correspond to records in the other table. In this section, you'll create two tables, a primary key in each table, and a few rows of sample data. Finish adding the connection by selecting OK.Ĭreate tables and keys by using Table Designer In the Add Connection dialog box, make sure that Microsoft SQL Server Database File is selected under Data source, and then browse to and select the SampleDatabase.mdf file.
If you can't expand the Data Connections node, or the SampleDatabase.mdf connection is not listed, select the Connect to Database button in the Server Explorer toolbar. Open the Properties window by expanding the Data Connections node, right-clicking on SampleDatabase.mdf, and then selecting Properties. Expand (localdb)\MSSQLLocalDB > Databases, and then right-click on SampleDatabase.mdf and select Properties.Īlternatively, you can select View > Server Explorer, if that window isn't already open. Select View > SQL Server Object Explorer to open the SQL Server Object Explorer window. You can view the connection string for the SampleDatabase.mdf file by opening the Properties window of the data connection:
On the Choose your Database Objects page, you'll see a message that says the database doesn't contain any objects. On the Save the Connection String to the Application Configuration File page, choose Next. On the Choose Your Data Connection page, select the SampleDatabase.mdf file in the drop-down list, and then choose Next. On the Choose a Database Model page, choose Next to accept the default (Dataset). On the Choose a Data Source Type page, choose Database and then choose Next. In the near future, README file will cover connections to other kinds of servers and databases.The Data Source Configuration Wizard opens. Command and Data Reader SqlCommand cmd = new SqlCommand() cmd.Connection = conn cmd.CommandType = CommandType.Text cmd.CommandText = "SELECT * FROM Person.Person" SqlDataReader sdr = cmd.ExecuteReader(CommandBehavior.Default) Stephen GlasskeysCįinally, close and dispose of the objects when finished. This source creates a SQLcommand using the conn connection object created above. This is the connection string name, and we can use this to create a connection object in source: using System.Configuration //Retrieve Connection String By Name string sConn = "" ConnectionStringSettings settings = ConfigurationManager.ConnectionStrings SqlConnection conn = new SqlConnection(settings.ConnectionString) Stephen GlasskeysĪlternatively, you can access the same setting value, reading the Application's properties: string sConnection = Stephen GlasskeysĪnd of course, the connection can be used to create SqlCommand or other data objects like a SqlDataReader. Notice the name=" " entry in the example image below. Look for values inside the connectionStrings tag. Next, open app.config to examine its contents. When the project is saved, Visual Studio updates setting information in the app.config XML file.
However if everything works as it should, don't forget to click the Save toolbar icon to keep your new connection string setting.
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If you click Test Connection again and receive another error message, you may wish to read my piece on How to fix common SQL Server Management Studio 'Connect to Server' errors. To validate your connection, use the Test Connection feature, and click OK if you receive a "test connection succeeded" notification.īut.you may get an error message, which means you'll probably need to double-check the server name, log on credentials, or authentication entries.
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