/// <summary>
/// Retrieves the selected metadata (in search result listbox) from CSW catalog.
/// It handles including GUI validation and metadata retrieveal.
/// </summary>
/// <remarks>
/// Reused in View Summary, View Detail, and Download buttons.
/// </remarks>
/// <returns>A XMLDocument object if successfully retrieved metadata. Null if otherwise.</returns>
private XmlDocument RetrieveSelectedMetadataFromCatalog(bool bApplyTransform)
{
if (cmbCswCatalog.SelectedIndex == -1)
{
MessageBox.Show(resourceManager.GetString("catalogNotSelected"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
CswCatalog catalog = (CswCatalog)cmbCswCatalog.SelectedItem;
if (catalog == null) { throw new NullReferenceException(resourceManager.GetString("catalogNotSpecified")); }
CswRecord record = (CswRecord)lstSearchResults.SelectedItem;
if (record == null) throw new NullReferenceException(resourceManager.GetString("searchNotSelected"));
// connect to catalog if not connected already
if (!catalog.IsConnected())
{
string errMsg = "";
try { catalog.Connect(); }
catch (Exception ex) { errMsg = ex.ToString(); }
if (!catalog.IsConnected())
{
MessageBox.Show(resourceManager.GetString("catalogConnectFailed"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
}
bool isTransformed = false;
// retrieve metadata doc by its ID
CswSearchRequest searchRequest = new CswSearchRequest();
searchRequest.Catalog = catalog;
try
{
//MessageBox.Show(record.ID);
isTransformed = searchRequest.GetMetadataByID(record.ID, bApplyTransform);
_mapServerUrl = searchRequest.GetMapServerUrl();
//MessageBox.Show(record.FullMetadata);
}
catch (Exception ex)
{
FormMessageBox frmMessageBox = new FormMessageBox();
frmMessageBox.Init("Failed to retrieve metadata from service: " + ex.Message,
"Response from CSW service:\r\n" + searchRequest.GetResponse().ResponseXML,
"Error");
frmMessageBox.ShowDialog(this);
return null;
}
CswSearchResponse response = searchRequest.GetResponse();
CswRecord recordMetadata = response.Records[0];
if (!isTransformed)
{
XmlDocument xmlDoc = new XmlDocument();
try { xmlDoc.LoadXml(recordMetadata.FullMetadata); }
catch (XmlException xmlEx)
{
MessageBox.Show(resourceManager.GetString("loadXMLException"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
return xmlDoc;
}
else
{
styledRecordResponse = recordMetadata.FullMetadata;
return null;
}
}
/// <summary>
/// Retrieves the selected metadata (in search result listbox) from CSW catalog. Exception shall be thrown.
/// </summary>
/// <remarks>
/// Called in View Metadata, Download Metadata, and Add to Map
/// </remarks>
/// <returns>A XMLDocument object if metadata was retrieved successfully. Null if otherwise.</returns>
private void RetrieveAddToMapInfoFromCatalog()
{
try
{
// validate
if (cmbCswCatalog.SelectedIndex == -1)
{
MessageBox.Show(resourceManager.GetString("catalogNotSelected"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (lstSearchResults.SelectedIndex == -1) { throw new Exception(resourceManager.GetString("searchNotSelected")); }
CswCatalog catalog = (CswCatalog)cmbCswCatalog.SelectedItem;
if (catalog == null) { throw new NullReferenceException(resourceManager.GetString("catalogNotSpecified")); }
CswRecord record = (CswRecord)lstSearchResults.SelectedItem;
if (record == null) throw new NullReferenceException(resourceManager.GetString("searchNotSelected"));
// connect to catalog if needed
if (!catalog.IsConnected())
{
string errMsg = "";
try { catalog.Connect(); }
catch (Exception ex) { errMsg = ex.Message; }
// exit if still not connected
if (!catalog.IsConnected())
{
MessageBox.Show(resourceManager.GetString("catalogConnectFailed"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
CswSearchRequest searchRequest = new CswSearchRequest();
searchRequest.Catalog = catalog;
try
{
searchRequest.GetAddToMapInfoByID(record.ID);
_mapServerUrl = searchRequest.GetMapServerUrl();
}
catch (Exception ex)
{
FormMessageBox frmMessageBox = new FormMessageBox();
frmMessageBox.Init("Failed to retrieve metadata from service: " + ex.Message,
"Response from CSW service:\r\n" + searchRequest.GetResponse().ResponseXML,
"Error");
frmMessageBox.ShowDialog(this);
}
}
catch (Exception ex)
{
MessageBox.Show(resourceManager.GetString("loadXMLException"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// Display a error messagebox with details.
/// </summary>
/// <param name="message">error message</param>
/// <param name="detailedMessage">details</param>
private void ShowDetailedErrorMessageBox(string message, string details)
{
FormMessageBox frmMessageBox = new FormMessageBox();
frmMessageBox.Init(message, details, StringResources.ErrorMessageDialogCaption);
frmMessageBox.ShowDialog(this);
}
