/// <summary>
/// Get sheet info from the imported spreadsheet.
/// </summary>
/// <param name="fileUploadId">File upload Id.</param>
/// <param name="sheetId">Selected sheet info.</param>
/// <param name="headerRowNo">Header row no.</param>
/// <param name="dataRowNo">Data row number to start reading data.</param>
/// <param name="lastRowNo">Optional last row number to read.</param>
/// <param name="fileFormat">Imported file fileFormat ( Excel or CSV)</param>
/// <returns>
/// Sheet Info.
/// </returns>
public SampleTable GetSampleTable(string fileUploadId, ImportFormat fileFormat, string sheetId, int headerRowNo, int dataRowNo, int?lastRowNo)
{
// Get service
IDataFileReaderService service = _readerActivator(fileFormat);
// Settings
DataFileReaderSettings settings = new DataFileReaderSettings
{
ImportFormat = fileFormat,
HeadingRowNumber = headerRowNo,
FirstDataRowNumber = dataRowNo,
LastDataRowNumber = lastRowNo,
SheetId = sheetId
};
// Open stream
using (Stream stream = FileRepositoryHelper.GetTemporaryFileDataStream(fileUploadId))
{
// Build sample
SampleDataCreator creator = new SampleDataCreator( );
SampleTable sampleTable = creator.CreateSample(stream, settings, service);
// Trim titles
foreach (var col in sampleTable.Columns)
{
col.Name = col.Name?.Trim( ) ?? "";
}
return(sampleTable);
}
}
/// <summary>
/// Packs the spreadsheet information response.
/// </summary>
/// <param name="result">The result.</param>
/// <returns></returns>
private static SampleTable PackSampleTable(Interface.SampleTable sampleTable)
{
SampleTable result = new SampleTable
{
Rows = sampleTable.Rows.Select(row => PackSampleRow(row)).ToList(),
Columns = sampleTable.Columns.Select(column => PackSampleColumn(column)).ToList( ),
};
return(result);
}
/// <summary>
/// Read sample data from a spreadsheet reader.
/// </summary>
/// <param name="stream">The spreadsheet.</param>
/// <param name="settings">Settings.</param>
/// <param name="service">The reader.</param>
/// <returns></returns>
public SampleTable CreateSample(Stream stream, DataFileReaderSettings settings, IDataFileReaderService service)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (settings == null)
{
throw new ArgumentNullException(nameof(settings));
}
if (service == null)
{
throw new ArgumentNullException(nameof(service));
}
// Read field list
using (IDataFile dataFile = service.OpenDataFile(stream, settings))
{
SheetMetadata metadata = dataFile.ReadMetadata( );
SampleTable table = new SampleTable
{
Columns = metadata.Fields.Select(
field =>
new SampleColumn
{
ColumnName = field.Key,
Name = field.Title
}
).ToList( )
};
// Read records
var records = dataFile.GetObjects( ).Take(NumberOfSampleRows);
// Convert to sample rows
List <SampleRow> sampleRows = new List <SampleRow>( );
foreach (IObjectReader record in records)
{
// Read values
var values = metadata.Fields.Select(field =>
{
try
{
return(record.GetString(field.Key));
}
catch
{
return(string.Empty);
}
}).ToList( );
// Create sample row
SampleRow row = new SampleRow
{
Values = values
};
sampleRows.Add(row);
}
table.Rows = sampleRows;
return(table);
}
}