c# - convert string to ConnectionStringSettings

Question

In my project I have a method which needs to return a ConnectionStringSettings object. As the database and server name will change dynamically, I need to dynamically construct the connection string.

How do I convert a string to ConnectionStringSettings?

public ConnectionStringSettings getConnection(string server, string database)
{
    //ConnectionStringSettings connsettings = new ConnectionStringSettings();

    string connection = ConfigurationManager.ConnectionStrings["myConnString"].ToString();
    connection = string.Format(connection, server, database);

    // Need to convert connection to ConnectionStringSettings
    // Return ConnectionStringSettings
}

--Web.config

<add name="myConnString" connectionString="server={0};Initial Catalog={1};uid=user1;pwd=blah; Connection Timeout = 1000"/>

Answer 1

ConnectionStringSettings类构造函数有一个重载，它接受两个字符串（第一个是连接字符串的名称，第二个是连接字符串本身）。

public ConnectionStringSettings getConnection(string server, string database)
{
    string connection = ConfigurationManager.ConnectionStrings["myConnString"].ToString();
    connection = string.Format(connection, server, database);

    return new ConnectionStringSettings("myConnString", connection);
}

还有第三个重载，它接受一个额外的字符串作为提供者的名称。