130 lines
4.3 KiB
C#
130 lines
4.3 KiB
C#
//
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// Class: ExcelReader
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// Current CLR: 4.0.30319.34209
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// System: Microsoft Visual Studio 10.0
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// Author: dani
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// Created: 6/15/2015 10:03:40 PM
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//
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// Copyright (c) 2015 Informatikbüro Daniel Schick. All rights reserved.
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Globalization;
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using System.IO;
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using log4net;
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using Microsoft.Office.Interop.Excel;
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namespace bsmd.ExcelReadService
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{
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public class ExcelReader : IDisposable
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{
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private ILog _log = LogManager.GetLogger(typeof(ExcelReader));
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private Workbooks _excelWorkbooks;
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private Application _excelApp;
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private Dictionary<string, Name> _nameDict;
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public ExcelReader(string filePath)
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{
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this._excelApp = new Application();
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this._excelWorkbooks = _excelApp.Workbooks;
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Workbook portcall = _excelWorkbooks.Open(filePath, 0, true, 5, "", "", false, XlPlatform.xlWindows, "", false, false, 0, false, false, false);
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_nameDict = new Dictionary<string, Name>();
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foreach(Name name in portcall.Names)
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{
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_nameDict[name.Name] = name;
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}
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}
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public string ReadText(string lookup)
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{
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if (!_nameDict.ContainsKey(lookup)) return null;
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var val = _nameDict[lookup].RefersToRange.Value;
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var val2 = _nameDict[lookup].RefersToRange.Value2;
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if(val != null)
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return val.ToString();
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if (val2 != null)
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return val2.ToString();
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return null;
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}
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public void Dispose()
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{
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if (this._excelWorkbooks != null)
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this._excelWorkbooks.Close();
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if (this._excelApp != null)
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this._excelApp.Quit();
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}
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internal DateTime? ReadDate(string lookup)
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{
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try
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{
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var val = _nameDict[lookup].RefersToRange.Value;
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if (val is DateTime) return val;
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if (val is double)
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return DateTime.FromOADate(val);
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DateTime date;
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if (DateTime.TryParse(val, out date))
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return date;
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// TODO: weitere varianten ausprobieren
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return null;
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}
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catch (Exception)
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{
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_log.WarnFormat("error parsing datetime for lookup {0}", lookup);
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return null;
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}
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}
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internal DateTime? ReadTime(string lookup)
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{
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try
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{
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var val = _nameDict[lookup].RefersToRange.Value;
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if (val is DateTime) return val;
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if (val is double)
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return DateTime.FromOADate(val);
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DateTime date;
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if (DateTime.TryParseExact(val, "HH:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.NoCurrentDateDefault, out date))
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return date;
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if (DateTime.TryParseExact(val, "HH:mm", CultureInfo.InvariantCulture, DateTimeStyles.NoCurrentDateDefault, out date))
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return date;
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return null;
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}
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catch (Exception)
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{
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_log.WarnFormat("error reading time for lookup {0}", lookup);
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return null;
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}
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}
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internal double? ReadNumber(string lookup)
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{
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double result;
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try
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{
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var val = _nameDict[lookup].RefersToRange.Value;
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if (val is double) return val;
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if (val is string)
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{
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if (double.TryParse(val, NumberStyles.None, CultureInfo.InvariantCulture, out result))
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return result;
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if (double.TryParse(val, out result))
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return result;
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}
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return null;
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}
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catch (Exception)
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{
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_log.WarnFormat("error reading number for lookup {0}", lookup);
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return null;
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}
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}
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}
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}
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