async Task Present()
{
PresentDialog dlg = new PresentDialog();
dlg.UiState = _uiState;
dlg.ShowDialog(this);
_uiState = dlg.UiState;
if (dlg.DialogResult == DialogResult.Cancel)
{
return;
}
int nStart = Convert.ToInt32(dlg.PresentStart);
int nCount = Convert.ToInt32(dlg.PresentCount);
EnableControls(false); // 暂时禁用
try
{
PresentResult present_result = await _zclient.Present(
dlg.ResultSetName,
nStart,
nCount,
1000, // 10
"F",
_targetInfo.PreferredRecordSyntax);
if (present_result.Value == -1)
{
this.Invoke((Action)(() => MessageBox.Show(this, present_result.ToString())));
}
else
{
// 把 MARC 记录显示出来
AppendMarcRecords(present_result.Records,
_zclient.ForcedRecordsEncoding == null ? _targetInfo.DefaultRecordsEncoding : _zclient.ForcedRecordsEncoding,
_fetched);
if (present_result.Records != null)
{
_fetched += present_result.Records.Count;
}
}
}
finally
{
EnableControls(true);
}
}
async Task FetchRecords(TargetInfo targetinfo)
{
EnableControls(false); // 暂时禁用
try
{
if (_resultCount - _fetched > 0)
{
PresentResult present_result = await _zclient.Present(
"default",
_fetched,
Math.Min((int)_resultCount - _fetched, 10),
10,
"F",
targetinfo.PreferredRecordSyntax);
if (present_result.Value == -1)
{
this.Invoke((Action)(() => MessageBox.Show(this, present_result.ToString())));
}
else
{
// 把 MARC 记录显示出来
AppendMarcRecords(present_result.Records,
_zclient.ForcedRecordsEncoding == null ? targetinfo.DefaultRecordsEncoding : _zclient.ForcedRecordsEncoding,
_fetched);
_fetched += present_result.Records.Count;
}
}
}
finally
{
EnableControls(true);
}
#if NO
if (_resultCount - _fetched > 0)
{
this.button_nextBatch.Enabled = true;
}
else
{
this.button_nextBatch.Enabled = false;
}
this.button_nextBatch.Text = ">> " + _fetched + "/" + _resultCount;
#endif
}