我看了所有可以找到的csv阅读示例,但我不确定这是哪里出了问题。
我对C#还是很陌生,但到目前为止仍很喜欢。
无论如何,这里的代码在most时都很好用(您可以通过我在阅读中尝试过很多不同选项的注释看到:]
StreamReader sr = new StreamReader(csvFileToImport);
while (sr.EndOfStream != true)
{
string line = sr.ReadLine();
//string[] value = line.Split(new string[] { "\",\"" }, StringSplitOptions.None);
//string[] value = line.Split(new string[] {","}, StringSplitOptions.None);
//string[] value = line.Split(new string[] { "(?=(?:[^']*'[^']*')*[^']*$)" }, StringSplitOptions.None);
//string[] value = line.Split(new string[] { "," }, StringSplitOptions.None);
string[] value = Regex.Split(line, @"\s|[,]");
StockItem si = new StockItem();
switch (stockFile.Supplier)
{
case "Leader":
si.Supplier = stockFile.Supplier;
si.Category = value[2].Replace("'", "''");
si.StockCode = value[11].Replace("'", "''");
si.Cost = Convert.ToDecimal(value[7]);
si.Description = value[4].Replace("'", "''");
si.Image = value[9].Replace("'", "''");
si.Manufacturer = value[10].Replace("'", "''");
si.Sell = Convert.ToDecimal(value[8]);
si.StockAdelaide = value[17].Replace("'", "''");
si.StockBrisbane = value[18].Replace("'", "''");
si.StockMelbourne = value[19].Replace("'", "''");
si.StockPerth = value[20].Replace("'", "''");
si.StockSydney = value[21].Replace("'", "''");
si.Subcategory = value[3].Replace("'", "''");
//Add line into db
string sql = "insert into Stock (Supplier, StockCode, Manufacturer, Category, Subcategory, Description, Cost, Sell, Image, StockPerth, StockAdelaide, StockSydney, StockBrisbane, StockMelbourne) values ('" + si.Supplier + "', '" + si.StockCode + "', '" + si.Manufacturer + "', '" + si.Category + "', '" + si.Subcategory + "', '" + si.Description + "', " + si.Cost + ", " + si.Sell + ", '" + si.Image + "', '" + si.StockPerth + "', '" + si.StockAdelaide + "', '" + si.StockSydney + "', '" + si.StockBrisbane + "', '" + si.StockMelbourne + "')";
cmd = new SqlCommand(sql, cn);
cmd.ExecuteNonQuery();
break;
default:
break;
}
}
success = true;
cn.Close();
我已经链接到1行csv文件,如果有人愿意这样好看,我将无法正确阅读,我将非常感激!
感谢您,也可以随时指出我可以改进的任何常规代码……我相信还有很多地方可以改进。
读取csv时使用string line = sr.ReadLine();
,但使用RFC 4180 ,2.6告诉我们,包含Digote "
的字段必须包含多行。
因此,如果文档中存在多个行字段,则逐行读取文件将是一个问题。我将放弃手工的正则表达式和ReadLine
,并使用更强大的解析器,例如CSV Helper。
然后定义要从CSV获取的对象。
public class Leader
{
public string LongColumn6 { get; set; }
public string Supplier { get; set; }
public string Category { get; set; }
public string StockCode { get; set; }
public Decimal Cost { get; set; }
public string Description { get; set; }
public string Image { get; set; }
public string Manufacturer { get; set; }
public Decimal Sell { get; set; }
public string StockAdelaide { get; set; }
public string StockBrisbane { get; set; }
public string StockMelbourne { get; set; }
public string StockPerth { get; set; }
public string StockSydney { get; set; }
public string Subcategory { get; set; }
}
并且是各自的映射器:列&是Foo属性等。
public sealed class LeaderMap : ClassMap<Leader>
{
public LeaderMap()
{
Map(m => m.LongColumn6).Index(5); // the column that cause the issue
//complete the List
Map(m => m.Category).Index(2);
Map(m => m.StockCode).Index(11);
Map(m => m.Cost).Index(7);
Map(m => m.Description).Index(4);
}
}
然后阅读很简单:
using (var csvReader = new CsvReader(reader, CultureInfo.InvariantCulture ))
{
csvReader.Configuration.HasHeaderRecord = false;
csvReader.Configuration.RegisterClassMap<LeaderMap>();
records = csvReader.GetRecords<Leader>().ToList();
}
注意,在此live demo中。我使用StringReader来模拟文件阅读器。您可以使用文件阅读器并将其传递给您的路径。