private void button7_Click(object sender, EventArgs e) { if (dataGridView1.SelectedRows.Count < 1) { MessageBox.Show("请先选择用户组", "错误"); return; } OpenFileDialog dialog = new OpenFileDialog(); dialog.Multiselect = true;//该值确定是否可以选择多个文件 dialog.Title = "请选择图片"; dialog.Filter = "图片文件(*.png;*.jpg;*.bmp)|*.png;*.jpg;*.bmp"; if (dialog.ShowDialog() == DialogResult.OK) { string[] files = dialog.FileNames; var groupID = dataGridView1.CurrentRow.Cells[0].Value.ToString(); string userName = string.Empty; InputName.Show(out userName); register(files, groupID, userName); updateUserList(groupID); } }