解决方法
This fellow显示示例代码,如果您仍然想在所有注意事项后执行：
protected void EditConfigButton(object sender,EventArgs e)
{
Configuration objConfig = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");
AppSettingsSection objAppsettings = (AppSettingsSection)objConfig.GetSection("appSettings");
//Edit
if (objAppsettings != null)
{
objAppsettings.Settings["test"].Value = "newvalueFromCode";
objConfig.Save();
}
}
