System.Configuration.ConnectionStringSettingsCollection.Remove 方法 (ConnectionStringSettings)

System.Configuration.ConnectionStringSettingsCollection.Remove 方法 (ConnectionStringSettings)例子

下面的示例演示如何从集合中移除指定的 ConnectionStringSettings 对象。

static void RemoveConnectionStrings()
{

    try
    {
        System.Configuration.Configuration config =
         ConfigurationManager.OpenExeConfiguration(
         ConfigurationUserLevel.None);

        // Clear the connection strings collection.
        ConnectionStringsSection csSection =
            config.ConnectionStrings;
        ConnectionStringSettingsCollection csCollection =
         csSection.ConnectionStrings;

        // Get the connection string setting element
        // with the specified name.
        ConnectionStringSettings cs =
            csCollection["ConnStr0"];

        // Remove it.
        if (cs != null)
        {
            // Remove the element.
            csCollection.Remove(cs);

            // Save the configuration file.
            config.Save(ConfigurationSaveMode.Modified);

            Console.WriteLine(
             "Connection string settings removed.");
        }
        else
            Console.WriteLine(
                "Connection string settings does not exist.");

    }
    catch (ConfigurationErrorsException err)
    {
        Console.WriteLine(err.ToString());
    }
}

相关资源

ConnectionStringSettingsCollection 类

Remove 重载

System.Configuration 命名空间

ConnectionStringsSection

MSDN