SqlConnection Constructor(String)

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

Syntax

Visual Basic
C#


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


public SqlConnection( string connectionString )

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(); }

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

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

Reference

SqlConnection Class
SqlConnection Members
Overload List
ConnectionString Property

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