１.我想当选中一个文件夹时就上传文件夹下的所有图片
２.可以一次选中多个图片上传

 1:folderBrowserDialog 与   {
                string[] mystring = (this.textBox1.Text, "*.*", SearchOption.AllDirectories);

  之间的关系；用file.copy


 2；对于第二个问题，利用 openFileDialog 并设置其属性是否多选；具体的用file.copy
 if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
 
              
 
                foreach (string my in this.openFileDialog1.FileNames)
                {
 
                    string path = my.Substring(my.LastIndexOf("\\") + 1);
                     (this.openfiledialog1.filename,"要复制到那个路径下")
                }
            
            
            }