Question

我是c＃中的新人，我必须在c＃中编写网络服务（btw business to business）

但我通常在vb中做，所以我不确定它在C＃dbconnection中的样子。如果可以告诉我一些链接，这将有助于我做网络服务（顺便说一句企业对企业）现在我已将服务器中的sql数据库连接到Web服务这是我的dbconnection.vb，所以如何将其更改为c sharp，希望有人能告诉我c＃中的代码是什么样的

    Imports Microsoft.VisualBasic
Imports System.Data.SqlClient

Public Class dbconnection
    Function getConnection() As SqlConnection
        Dim dbConn As SqlConnection

        dbConn = New SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|delivery.mdf;Integrated Security=True;User Instance=True")

        Return dbConn
    End Function
End Class

Answer 1

一对一实现如下：

using System.Data.SqlClient;
public class DbConnection
{
    public SqlConnection getConnection()
    {
        SqlConnection dbConn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|delivery.mdf;Integrated Security=True;User Instance=True");
        return dbConn;
    }
}

但是，我不能说它符合最佳做法。考虑实施IDisposable以正确释放非托管资源：

using System.Data.SqlClient;
using System;
public class DbConnection : IDisposable
{
    public SqlConnection DbConn { get; private set; }

    public DbConnection()
    {
        DbConn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|delivery.mdf;Integrated Security=True;User Instance=True");
    }

    public void Dispose()
    {
        if (DbConn.State != System.Data.ConnectionState.Closed) {
            DbConn.Close();
        }
        DbConn.Dispose();
    }
}

它的用法类似于

using(DbConnection myClassInstance = new DbConnection()) {
    SqlConnection connection = myClassInstance.DbConn;
}

如何将web服务db Connection.vba更改为c＃代码？

1 个答案: