public static string GetContent <T>(IEnumerable <T> entities, CsvConfig config) where T : new()
{
if (config == null)
{
config = new CsvConfig(typeof(T));
}
CsvPropertyInfo[] csvPropertyInfos = GetPropertyInfos <T>();
StringBuilder sb = new StringBuilder();
if (config.HasHeader)
{
List <string> titles = new List <string>();
foreach (CsvPropertyInfo csvPi in csvPropertyInfos)
{
titles.Add(CsvContext.FixField(csvPi.Attribute.Name, config.Delimiter));
//sb.Append(CsvContext.FixField(csvPi.Attribute.Name, config.Delimiter) + config.Delimiter);
}
sb.AppendLine(string.Join(config.Delimiter, titles.ToArray()));
}
foreach (T entity in entities)
{
sb.AppendLine(GetLine(entity, config, csvPropertyInfos));
}
return(sb.ToString());
}
//public static DataTable GetDataTable(string path)
//{
// return GetDataTable(path,",", Encoding.Default);
//}
public static DataTable GetDataTable(string path, string delimiter, Encoding encoding)
{
if (path.GetIsOleDb())
{
}
DataTable dt = new DataTable();
dt.Locale = CultureInfo.InvariantCulture;
using (StreamReader sr = new StreamReader(path, encoding))
{
string firstLine = sr.ReadLine();
string[] titles = CsvContext.GetFields(firstLine, delimiter);
for (int i = 0; i < titles.Length; i++)
{
dt.Columns.Add(titles[i]);
}
while (!sr.EndOfStream)
{
string line = sr.ReadLine();
string[] fields = CsvContext.GetFields(line, delimiter);
DataRow dr = dt.NewRow();
for (int i = 0; i < fields.Length && i < dt.Columns.Count; i++)
{
dr[i] = fields[i];
}
dt.Rows.Add(dr);
}
}
return(dt);
}
public static T ReadRecord <T>(string line, string[] titles, CsvConfig config) where T : new()
{
CsvRecord record = CsvContext.GetRecords(line, config.Delimiter).First();
List <PropertyInfo> properties = typeof(T).GetProperties().ToList();
return(ReadRecord <T>(record, properties));
}
public static T[] ReadFile <T>(string path, string tableName, CsvConfig config)
where T : new()
{
if (path.GetIsOleDb())
{
DataTable table = CsvContext.GetDataTable(path, tableName);
return(ReadDataTable <T>(table, config));
}
else
{
return(ReadFile <T>(path, config));
}
}
public static string GetLine <T>(T entity, CsvConfig config, CsvPropertyInfo[] csvPropertyInfos) where T : new()
{
if (config == null)
{
config = new CsvConfig(typeof(T));
}
//StringBuilder sb = new StringBuilder();
List <string> fields = new List <string>();
foreach (CsvPropertyInfo csvPi in csvPropertyInfos)
{
fields.Add(CsvContext.FixField(csvPi.PropertyInfo.GetValue(entity, null).ToString(), config.Delimiter));
}
return(string.Join(config.Delimiter, fields.ToArray()));
}
public static DataTable GetDataTable(string path, string delimiter, Encoding encoding)
{
if (path.GetIsOleDb())
{
}
DataTable dt = new DataTable();
dt.Locale = CultureInfo.InvariantCulture;
using (StreamReader sr = new StreamReader(path, encoding))
{
string firstLine = sr.ReadLine().Trim();
string[] titles = CsvContext.GetRecords(firstLine, delimiter).First().ToArray();
for (int i = 0; i < titles.Length; i++)
{
dt.Columns.Add(titles[i]);
}
string fixedLine = string.Empty;
while (!sr.EndOfStream)
{
string line = sr.ReadLine().Trim();
//skip empty lines
if (line == string.Empty)
{
continue;
}
//read lines continuously
int lastDoubleQuote = line.LastIndexOf('"');
{ }
string[] fields = CsvContext.GetRecords(line, delimiter).First().ToArray();
DataRow dr = dt.NewRow();
for (int i = 0; i < fields.Length && i < dt.Columns.Count; i++)
{
dr[i] = fields[i];
}
dt.Rows.Add(dr);
}
}
return(dt);
}
public static T ReadLine <T>(string line, string[] titles, CsvConfig config) where T : new()
{
string[] fields = CsvContext.GetFields(line, config.Delimiter);
T result = new T();
Type t = typeof(T);
List <PropertyInfo> pis = t.GetProperties().ToList();
for (int i = 0; i < fields.Length; i++)
{
PropertyInfo pi = null;
if (config.MappingType == CsvMappingType.Title)
{
pi = GetPropertyInfo(pis, i, titles[i], config);
}
if (config.MappingType == CsvMappingType.Order)
{
pi = GetPropertyInfo(pis, i);
}
if (pi != null)
{
pi.SetValue(result, fields[i]);
}
}
foreach (PropertyInfo pi in pis)
{
//If the property is adorned with CsvOriginalFieldsAttribute, set the value to fields
if (pi.IsDefined(typeof(CsvOriginalFieldsAttribute), true))
{
pi.SetValue(result, fields, null);
}
}
return(result);
}
private static void WriteFile <T>(StreamWriter sw, T[] objects, CsvConfig config) where T : new()
{
CsvPropertyInfo[] properties = GetPropertyInfos <T>();
if (config.HasHeader)
{
foreach (CsvPropertyInfo csvPi in properties)
{
sw.Write(CsvContext.FixField(csvPi.Attribute.Name, config.Delimiter) + config.Delimiter);
}
sw.WriteLine();
}
foreach (T o in objects)
{
foreach (CsvPropertyInfo csvPi in properties)
{
sw.Write(CsvContext.FixField(csvPi.PropertyInfo.GetValue(o, null).ToString(), config.Delimiter) + config.Delimiter);
}
sw.WriteLine();
}
sw.Flush();
}
