SqlConnection Constructor(String)

In This Topic

Syntax
Remarks
Example
Requirements
See Also

Initializes a new instance of the SqlConnection class when given a string containing the connection string.

Syntax

Visual Basic
C#

public SqlConnection( 
   string connectionString
)

'Declaration
 
Public Function New( _
   ByVal connectionString As String _
)

Parameters

connectionString: The connection used to connect to SQL Server.

Remarks

When a new instance of SqlConnection is created, the read/write properties are set to the following initial values unless they are specifically set using their associated keywords in the ConnectionString property.

Properties	Initial Value
ConnectionString	connectionString
ConnectionTimeout	15
Password	empty string ("")
UserId	empty string ("")

Example

The following example creates and opens a SqlConnection.

csharp

public void CreateSqlConnection()
{
  string myConnString = 
      "User Id=sa;Server=localhost;Initial Catalog=Test;";
  SqlConnection myConnection = new SqlConnection(myConnString);
  myConnection.Open();
  //Do something
  myConnection.Close();
}

Visual Basic

Public Sub CreateSqlConnection()
  Dim myConnString As String = _
      "User Id=sa;Server=localhost;Initial Catalog=Test;"
  Dim myConnection As New SqlConnection(myConnString)
  myConnection.Open()
  'Do something
  myConnection.Close()
End Sub

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

SqlConnection Class
SqlConnection Members
Overload List
ConnectionString Property

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