private void btnAdd_Click(object sender, EventArgs e) { frmMaterialData form = new frmMaterialData(); form.Type = type; DialogResult dr = form.ShowDialog(); if (dr.Equals(DialogResult.OK)) { dgvUpdate(); } else { if (form.ucMaterialDatas.picCameraPhoto.Tag != null) { if (form.ucMaterialDatas.picCameraPhoto.Tag.ToString() != String.Empty) { cf.deleteImage(form.ucMaterialDatas.picCameraPhoto.Tag.ToString()); } } } }