实现效果:
  
知识运用:
DriveInfo类的GetDrives方法 Name属性 IsReady属性 DriveFormat属性
public bool IsReady {get;} //驱动器是否已准备好
public string DriveFormat {get;} //获取文件系统的类型
实现代码:
        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            DriveInfo[] drive = DriveInfo.GetDrives();
            foreach( DriveInfo d in drive )
            {
                if (comboBox1.SelectedItem.ToString() == d.Name)
                {
                    if (d.IsReady)                      //如果准备好
                        textBox1.Text = d.DriveFormat;  //获取文件类型
                }
            }
        }
原文:https://www.cnblogs.com/feiyucha/p/10295606.html