OleDbConnectionStringBuilder Constructors

Source:

OleDbConnectionStringBuilder.cs

Source:

OleDbConnectionStringBuilder.cs

Source:

OleDbConnectionStringBuilder.cs

public:
 OleDbConnectionStringBuilder();

public OleDbConnectionStringBuilder ();

Public Sub New ()

See also

• Connection String Builders
• Connection Strings in ADO.NET

Source:

OleDbConnectionStringBuilder.cs

Source:

OleDbConnectionStringBuilder.cs

Source:

OleDbConnectionStringBuilder.cs

public:
 OleDbConnectionStringBuilder(System::String ^ connectionString);

public OleDbConnectionStringBuilder (string connectionString);

public OleDbConnectionStringBuilder (string? connectionString);

new System.Data.OleDb.OleDbConnectionStringBuilder : string -> System.Data.OleDb.OleDbConnectionStringBuilder

Public Sub New (connectionString As String)

Parameters

Exceptions

Examples

The following example creates multiple OleDbConnectionStringBuilder instances, passing a different connection string to the constructor in each case. Note how setting the provider associated with the connection changes the set of predefined key/value pairs within the object's collection.

using System.Data.OleDb;

class Program
{
    static void Main()
    {
        try
        {
            // Build an empty instance, just to see
            // the contents of the keys.
            DumpBuilderContents("");

            // Create a SQL Server connection string.
            DumpBuilderContents("Provider=sqloledb;Data Source=(local);" +
                "Initial Catalog=AdventureWorks;" +
                "User Id=ab;Password=Password@1");

            // Create an Access connection string.
            DumpBuilderContents("Provider=Microsoft.Jet.OLEDB.4.0;" +
                @"Data Source=C:\Sample.mdb");

            // Create an Oracle connection string.
            DumpBuilderContents("Provider=msdaora;Data Source=SomeOracleDb;" +
                "User Id=userName;Password=Pass@word1;");

            // Create an Sybase connection string.
            DumpBuilderContents("Provider=ASAProv;Data source=myASA");

            Console.WriteLine("Press any key to finish.");
            Console.ReadLine();
        }
        catch (System.ArgumentException ex)
        {

            Console.WriteLine("Error: " + ex.Message);
        }
    }

    private static void DumpBuilderContents(string connectString)
    {
        OleDbConnectionStringBuilder builder =
            new OleDbConnectionStringBuilder(connectString);
        Console.WriteLine("=================");
        Console.WriteLine("Original connectString   = " + connectString);
        Console.WriteLine("builder.ConnectionString = " + builder.ConnectionString);
        foreach (string key in builder.Keys)
        {
            Console.WriteLine(key + "=" + builder[key].ToString());
        }
    }
}

Imports System.Data.OleDb    

Module Module1
  Sub Main()
    Try
      ' Build an empty instance, just to see
      ' the contents of the keys.
      DumpBuilderContents("")

      ' Create a SQL Server connection string.
      DumpBuilderContents("Provider=sqloledb;Data Source=(local);" & _
       "Initial Catalog=AdventureWorks;" & _
       "User Id=ab;Password=Password@1")

      ' Create an Access connection string.
      DumpBuilderContents("Provider=Microsoft.Jet.OLEDB.4.0;" & _
       "Data Source=C:\Sample.mdb")

      ' Create an Oracle connection string.
      DumpBuilderContents("Provider=msdaora;Data Source=SomeOracleDb;" & _
       "User Id=userName;Password=Pass@word1;")

      ' Create a Sybase connection string.
      DumpBuilderContents("Provider=ASAProv;Data source=myASA")

      Console.WriteLine("Press any key to finish.")
      Console.ReadLine()

    Catch ex As System.ArgumentException
      Console.WriteLine("Error: " & ex.Message)
    End Try
  End Sub

  Private Sub DumpBuilderContents(ByVal connectString As String)
    Dim builder As New OleDbConnectionStringBuilder(connectString)
    Console.WriteLine("=================")
    Console.WriteLine("Original connectString   = " & connectString)
    Console.WriteLine("builder.ConnectionString = " & builder.ConnectionString)
    For Each key As String In builder.Keys
      Console.WriteLine(key & "=" & builder.Item(key).ToString)
    Next
  End Sub
End Module

Remarks

Setting the Provider property, either directly (by setting the ConnectionString property) or by passing a connection string as a parameter to the constructor, may affect the set of key/value pairs that are contained within the OleDbConnectionStringBuilder instance. Setting the Provider property to "sqloledb," for example, adds all the standard SQL connection string properties. See the example in this topic for a demonstration of this behavior.

For some providers, assigning a connection string within the OleDbConnectionStringBuilder constructor causes the order of supplied key/value pairs to be rearranged.

See also

• Connection String Builders
• Connection Strings in ADO.NET