public static object LoadObjectsFromFile(
[ExcelArgument(Name = "path", Description = "The path", AllowReference = true)]
object xlPath,
[ExcelArgument(Name = "fileName", Description = "The file name", AllowReference = true)]
object xlFileName,
[ExcelArgument(Name = "objectNames", Description = "[Optional] A list of object names to load; all objects will be loaded by default", AllowReference = true)]
object xlObjectNames,
[ExcelArgument(Name = "fileFormat", Description = "[Optional] The file format; the file extension will be used by default", AllowReference = true)]
object xlFileFormat)
{
try
{
IExcelDataQuery fileFormatDataQuery = ExcelDataQuery.Create(xlFileFormat, "File format");
string fileName;
IObjectStreamer objectStreamer;
if (fileFormatDataQuery.IsEmpty == true)
{
fileName = GetFileName(xlPath, xlFileName, ObjectStreamer.GetFileExtensions());
if (ObjectStreamer.TryGetObjectStreamerByFileExtension(ExtendedPath.GetExtension(fileName), out objectStreamer) == false)
{
throw new ArgumentException("Invalid file extension '" + Path.GetExtension(fileName) + "', used default file extensions or specify the file format.");
}
}
else
{
if (fileFormatDataQuery.TryGetPoolValue <IObjectStreamer>(ObjectStreamer.TryGetObjectStreamer, out objectStreamer, dataAdvice: ExcelDataAdvice.Create(ObjectStreamer.GetNames())) == false)
{
throw new ArgumentException("Invalid file format " + fileFormatDataQuery.ToString(0, 0) + ".");
}
fileName = GetFileName(xlPath, xlFileName, objectStreamer.FileExtension);
fileFormatDataQuery.QueryCompleted();
}
IExcelDataQuery objectNamesDataQuery = ExcelDataQuery.Create(xlObjectNames, "Object names");
IEnumerable <string> objectNames = objectNamesDataQuery.GetColumnVector <string>();
objectNamesDataQuery.QueryCompleted();
StreamReader streamReader = new StreamReader(fileName);
IObjectStreamReader objectStreamReader = objectStreamer.GetStreamReader(streamReader);
string infoMessage;
IEnumerable <ExcelPoolItem> excelPoolItems;
ExcelPool.TryLoadObjectsByName(objectStreamReader, objectNames, out infoMessage, out excelPoolItems);
objectStreamReader.Close();
return(infoMessage.ToTimeStampString());
}
catch (Exception e)
{
return(ExcelDataConverter.GetExcelRangeErrorMessage(e));
}
}
public static object ListObjectsFromFile(
[ExcelArgument(Name = "path", Description = "The path", AllowReference = true)]
object xlPath,
[ExcelArgument(Name = "fileName", Description = "The file name", AllowReference = true)]
object xlFileName,
[ExcelArgument(Name = "fileFormat", Description = "[Optional] The file format; the file extension will be used by default", AllowReference = true)]
object xlFileFormat)
{
try
{
IExcelDataQuery fileFormatDataQuery = ExcelDataQuery.Create(xlFileFormat, "File format");
string fileName;
IObjectStreamer objectStreamer;
if (fileFormatDataQuery.IsEmpty == true)
{
fileName = GetFileName(xlPath, xlFileName, ObjectStreamer.GetFileExtensions());
if (ObjectStreamer.TryGetObjectStreamerByFileExtension(ExtendedPath.GetExtension(fileName), out objectStreamer) == false)
{
throw new ArgumentException("Invalid file extension '" + ExtendedPath.GetExtension(fileName) + "', used default file extensions or specify the file format.");
}
}
else
{
if (fileFormatDataQuery.TryGetPoolValue <IObjectStreamer>(ObjectStreamer.TryGetObjectStreamer, out objectStreamer, dataAdvice: ExcelDataAdvice.Create(ObjectStreamer.GetNames())) == false)
{
throw new ArgumentException("Invalid file format " + fileFormatDataQuery.ToString(0, 0) + ".");
}
fileName = GetFileName(xlPath, xlFileName, objectStreamer.FileExtension);
fileFormatDataQuery.QueryCompleted();
}
StreamReader streamReader = new StreamReader(fileName);
IObjectStreamReader objectStreamReader = objectStreamer.GetStreamReader(streamReader);
var objectNames = ExcelPool.GetObjectNames(objectStreamReader);
int n = objectNames.Count();
object[,] output = new object[n + 1, 2];
output[0, 0] = "Name";
output[0, 1] = "Type";
int j = 1;
foreach (var obj in objectNames)
{
output[j, 0] = obj.Item2;
output[j, 1] = obj.Item1.Name.String;
j++;
}
objectStreamReader.Close();
return(ExcelDataConverter.GetExcelRangeOutput(output));
}
catch (Exception e)
{
return(ExcelDataConverter.GetExcelRangeErrorMessage(e));
}
}
