OdbcConnectionStringBuilder.Keys 属性

定义

命名空间:

System.Data.Odbc

程序集:

System.Data.Odbc.dll

包:

System.Data.Odbc v9.0.0-rc.2.24473.5

Source:

OdbcConnectionStringbuilder.cs

获取包含 ICollection 中的键的 OdbcConnectionStringBuilder。

public:
 virtual property System::Collections::ICollection ^ Keys { System::Collections::ICollection ^ get(); };

public override System.Collections.ICollection Keys { get; }

member this.Keys : System.Collections.ICollection

Public Overrides ReadOnly Property Keys As ICollection

属性值

ICollection

一个 ICollection，它包含 OdbcConnectionStringBuilder 中的键。

示例

以下控制台应用程序示例新建一个 OdbcConnectionStringBuilder。 该代码循环访问显示键/值对的 ICollection 属性返回的 Keys。

注意

该示例包括一个密码以演示 OdbcConnectionStringBuilder 如何使用连接字符串。 在您的应用程序中，建议使用 Windows 身份验证。 如果必须使用密码，请不要在你的应用程序中包括硬编码的密码。

using System.Data.Odbc;

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("Driver={SQL Server};Server=(local);Database=AdventureWorks;Uid=ab;Pwd=pass@word1");

            // Create an Access connection string.
            DumpBuilderContents(@"Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\info.mdb;Exclusive=1;Uid=admin;Pwd=pass@word1");

            // Create an Oracle connection string.
            DumpBuilderContents("Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=Admin;Pwd=pass@word1;");

            // Create a Sybase connection string.
            DumpBuilderContents("Driver={SYBASE ASE ODBC Driver};Srvr=SomeServer;Uid=admin;Pwd=pass@word1");

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

    private static void DumpBuilderContents(string connectString)
    {
        OdbcConnectionStringBuilder builder =
            new OdbcConnectionStringBuilder(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.Odbc    
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("Driver={SQL Server};Server=(local);Database=AdventureWorks;Uid=ab;Pwd=pass@word1")

      ' Create an Access connection string.
      DumpBuilderContents("Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\info.mdb;Exclusive=1;Uid=admin;Pwd=pass@word1")

      ' Create an Oracle connection string.
      DumpBuilderContents("Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=Admin;Pwd=pass@word1;")

      ' Create a Sybase connection string.
      DumpBuilderContents("Driver={SYBASE ASE ODBC Driver};Srvr=SomeServer;Uid=admin;Pwd=pass@word1")

      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 OdbcConnectionStringBuilder(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

注解

中ICollection值的顺序与 属性返回Values的 中ICollection关联的值的顺序相同。

另请参阅

• 连接字符串生成器
• ADO.NET 中的连接字符串