코딩을 시작해봅시다.

private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
    int intchange;
    
    try
    {
        if (dataGridView1.CurrentCell != null)
        {
            // 모든 행의 CheckBox값을 False로 설정
            for (int i = 0; i < dataGridView1.RowCount; i++) 
            {
                dataGridView1[6, i].Value = false; // 6은 CheckBox가 있는 열 번호
            }
            // 현재 선택된 행의 CheckBox값을 True로 설정
            for (int i = 0; i < dataGridView1.SelectedRows.Count; i++) 
            {
                //Convert.ToInt32 => string을 int로 변환
                intchange = Convert.ToInt32(dataGridView1.SelectedRows[i].Cells[0].Value.ToString());
                dataGridView1[6, intchange].Value = true;
            }
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

publice void screenCapture(){

ScreentShotUtil ss = ScreentShotUtil.getInstance();

ss.takeScreenshot(Context, FullPath);

}

 public void screenshot() { 
  View view = MyActivity.this.getWindow().getDecorView();

  view.setDrawingCacheEnabled(true);

  Bitmap screenshot = view.getDrawingCache();

  String filename = "screenshot.png";

  try {

  File file = new File(Environment.getExternalStorageDirectory(), filename);

//  File file = new File(Environment.getExternalStorageDirectory()+"/추가경로/", filename);

  f.createNewFile();

  OutputStream outStream = new FileOutputStream(f);

  screenshot.compress(Bitmap.CompressFormat.PNG, 100, outStream);

  outStream.close();

  } catch (IOException e) {

  e.printStackTrace();

  }

  view.setDrawingCacheEnabled(false);

  }

}