在C#中動態修改ConnectionStrings的內容，可以通過以下步驟實現：
using System.Configuration;
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
ConnectionStringsSection connectionStringsSection = config.ConnectionStrings;
ConnectionStringSettings connectionString = connectionStringsSection.ConnectionStrings["MyConnectionString"];
connectionString.ConnectionString = "NewConnectionString";
config.Save(ConfigurationSaveMode.Modified);
總的來說，以上步驟將會幫助您在C#中動態修改ConnectionStrings的內容。
