ConfigurationManager.ConnectionStrings 属性

定义

命名空间:

System.Configuration

程序集:

System.Configuration.ConfigurationManager.dll

获取当前应用程序的默认配置的 ConnectionStringsSection 数据。

public:
 static property System::Configuration::ConnectionStringSettingsCollection ^ ConnectionStrings { System::Configuration::ConnectionStringSettingsCollection ^ get(); };

public static System.Configuration.ConnectionStringSettingsCollection ConnectionStrings { get; }

static member ConnectionStrings : System.Configuration.ConnectionStringSettingsCollection

Public Shared ReadOnly Property ConnectionStrings As ConnectionStringSettingsCollection

属性值

ConnectionStringSettingsCollection

当前应用程序的默认配置 ConnectionStringsSection 对象的内容。

例外

ConfigurationErrorsException

无法检索 ConnectionStringSettingsCollection 对象。

示例

以下示例演示如何使用连接字符串从数据库读取数据。

using System;
using System.Configuration;
using System.Data.SqlClient;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            ReadProducts();
        }

        static void ReadProducts()
        {
            var connectionString = ConfigurationManager.ConnectionStrings["WingtipToys"].ConnectionString;
            string queryString = "SELECT Id, ProductName FROM dbo.Products;";
            using (var connection = new SqlConnection(connectionString))
            {
                var command = new SqlCommand(queryString, connection);
                connection.Open();
                using (var reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        Console.WriteLine(String.Format("{0}, {1}", reader[0], reader[1]));
                    }
                }
            }
        }
    }
}

Imports System.Configuration
Imports System.Data.SqlClient
Module Module1

    Sub Main()
        ReadProducts()
    End Sub

    Sub ReadProducts()
        Dim connectionString = ConfigurationManager.ConnectionStrings("WingtipToys").ConnectionString
        Dim queryString = "SELECT Id, ProductName FROM dbo.Products;"
        Using connection As New SqlConnection(connectionString)
            Dim command = New SqlCommand(queryString, connection)
            connection.Open()

            Using reader As SqlDataReader = command.ExecuteReader()
                While reader.Read()
                    Console.WriteLine(String.Format("{0}, {1}", reader(0), reader(1)))
                End While
            End Using
        End Using
    End Sub

End Module

注解

ConnectionStringsSection 对象包含配置文件 connectionStrings 节的内容。

另请参阅

• ConnectionStringsSection
• ConnectionStringSettingsCollection