我正在编写一个应用程序，它将数据从csv分类到txt。
我已经见过但我无法获得所需的输出。
有人可以帮忙吗，我不知道我出错了。
我最初认为它的File.WriteAllLines是问题，但即使我写入控制台，我也会得到相同的结果。
我的文件看起来像这样
Georgina，Sinclair，408999703657，check，First National Bank，Fourways，275.00,12 / 01/2012 扎卡里，白石，409122372301，查询，ABSA，艾琳，70.25,12 / 01/2012 Toby，Henderson，401255489873，check，First National Bank，Edenvale，181.03,12 / 13/2012 兆，库克，409155874935，储蓄，ABSA，Southdowns，975.89,01 / 01/2013 布拉德利，詹姆斯，409254998，储蓄，ABSA，梅尔维尔，207.74,12 / 09/2012 柔弄，409771987，储蓄，ABSA，鲁德普特，207.74,12 /二千〇一十二分之三十一
我的输出应该是这样的
First National B0020000045603
GSinclair 408999703657 CH Fourways 002750001122012
THenderson 401255489873 CH Edenvale 001810313122012
ABSA 0040000146162
ZWhitehead 409122372301 CH Irene 000702501122012
KCooke 409155874935 SAVSouthdowns009758901012013
BJames 409254998 SAVMelville 002077409122012
SLane 409771987 SAVRoodepoort002077431122012
我目前只有代码返回标题和2行，如下所示。
ABSA 0040000146162
KCooke 409155874935 SAVSouthdowns 009758901012013
请协助。
我的代码如下
string text = @"C:\\Test\\output.txt";
var inputEntries = File.ReadLines(@"C:\\Test\\debitorders.csv").Select(line =>
{
var values = line.Split(',');
return new
{
accountholder = values[0].Trim().Substring(0, 1) + values[1].Trim(),
accountnumber = long.Parse(values[2].Trim()),
accounttype = values[3].Trim(),
bankname = values[4].Trim(),
branch = values[5].Trim(),
amount = 100 * double.Parse(values[6].Trim()),
date = DateTime.Parse(values[7].Trim())
};
});
var banks = inputEntries
.OrderBy(e => e.bankname)
.GroupBy(e => e.bankname, e => e);
foreach (var bank in banks)
{
var AccountName = bank.Key;
if (AccountName.Length >= 20)
{
AccountName = AccountName.Substring(0, 16);
}
else
{
AccountName += new string(' ', 20 - AccountName.Length);
}
var NumberOfAccounts = bank.Count();
var TotalAmount = bank.Select(acc => acc.amount).Sum();
var Header = AccountName + "\t" + NumberOfAccounts.ToString("000") + TotalAmount.ToString("0000000000");
var sortedAccounts = bank
.OrderBy(acc => acc.accountholder)
.OrderByDescending(acc => acc.amount);
foreach (var account in sortedAccounts)
{
var outputLine =
account.accountholder + "\t" +
account.accountnumber + "\t" +
//get first 2 characters
account.accounttype.Substring(0, 3).ToUpper() + account.branch + "\t" + "00" +
account.amount +
account.date.ToString("ddMMyyyy");
for (int i = 0; i < 15; i++)
{
File.WriteAllText(text, Header + Environment.NewLine + outputLine);
Console.WriteLine(Header + outputLine);
Console.ReadLine();
}
}
}
答案 0 :(得分：0)
我想我找到了解决方案：
File.AppendAllText(text, Header + Environment.NewLine + outputLine + Environment.NewLine);
使用File.AppendAllText而不是File.WriteAllText。使用WriteAllText，您始终会删除旧内容。
但是，在开始编写文件之前，请考虑清理文件（File.WriteAllText(text, "");），否则您将使用上次运行的旧数据。
尝试使用String.Format("{0,-10}", name)，这意味着名称的长度填充空格，长度为10.减号表示左对齐，正数表示右对齐。
我将您的代码更新为：
string text = @"D:\C#\output.txt";
File.WriteAllText(text, "");
var inputEntries = File.ReadLines(@"D:\c#\debitorders.csv").Select(line =>
{
var values = line.Split(',');
return new
{
accountholder = values[0].Trim().Substring(0, 1) + values[1].Trim(),
accountnumber = long.Parse(values[2].Trim()),
accounttype = values[3].Trim(),
bankname = values[4].Trim(),
branch = values[5].Trim(),
amount = 100 * double.Parse(values[6].Trim()),
date = DateTime.ParseExact(values[7].Trim(), "MM/dd/yyyy", CultureInfo.InvariantCulture)
};
});
var banks = inputEntries.OrderBy(e => e.bankname)
.GroupBy(e => e.bankname, e => e);
foreach (var bank in banks)
{
var AccountName = bank.Key;
var NumberOfAccounts = bank.Count();
var TotalAmount = bank.Select(acc => acc.amount).Sum();
var Header = String.Format("{0,-20} {1,-10} {2}", AccountName, NumberOfAccounts.ToString("000"), TotalAmount.ToString("0000000000"));
var sortedAccounts = bank.OrderBy(acc => acc.accountholder)
.OrderByDescending(acc => acc.amount);
File.AppendAllText(text, Header + Environment.NewLine);
Console.WriteLine(Header);
foreach (var account in sortedAccounts)
{
var outputLine = String.Format("{0,-11} {1,15} {2,-3} {3,-10} {4,7} {5,-10}",
account.accountholder,
account.accountnumber,
account.accounttype.Substring(0, 3).ToUpper(),
account.branch,
account.amount,
account.date.ToString("ddMMyyyy")
);
//get first 2 characters
//account.accounttype.Substring(0, 3).ToUpper() + account.branch + "\t" + "00" +
// what are the "00" for? didn't include them you may this do by yourself
File.AppendAllText(text, outputLine + Environment.NewLine);
Console.WriteLine(outputLine);
}
File.AppendAllText(text, Environment.NewLine);
Console.WriteLine();
}
输出是：
ABSA 004 0000146162
KCooke 409155874935 SAV Southdowns 97589 01012013
BJames 409254998 SAV Melville 20774 09122012
SLane 409771987 SAV Roodepoort 20774 31122012
ZWhitehead 409122372301 CHE Irene 7025 01122012
First National Bank 002 0000045603
GSinclair 408999703657 CHE Fourways 27500 01122012
THenderson 401255489873 CHE Edenvale 18103 13122012
答案 1 :(得分：0)
更好，更清洁的解决方案是使用您添加文字的List<string>。在代码的最后只是将列表转换为数组并将所有行写入文件。
List<string> outputLine = new List<string>(); //note this addition to the code
foreach (var bank in banks)
{
//do header formatting stuff here
var Header = somecode
outputLine.Add(Header); //Add Header to outputLine
var sortedAccounts = bank.OrderBy(acc => acc.accountholder)
.OrderByDescending(acc => acc.amount);
foreach (var account in sortedAccounts)
{
var tempStringBuilder =
account.accountholder + "\t" +
account.accountnumber + "\t" +
//get first 2 characters
account.accounttype.Substring(0, 3).ToUpper() + account.branch + "\t" + "00" +
account.amount +
account.date.ToString("ddMMyyyy");
outputLine.Add(tempStringBuilder); //Add tempStringBuilder to outputLine
}
}
File.WriteAllLines("destination path", outputLine.ToArray()); //Write everything to your output file in one go
我测试了它，它在我身边起作用。我希望这对你有所帮助。
替代Excel解决方案：
Microsoft Excel有一个非常强大的工具Pivot Tables，非常适合您的需求。如果您不熟悉它，请阅读一些有关它的教程。首先，这是一个让你了解工作流程以使用它的过程，但是一旦你掌握它就很简单。您只需拖放要分组的字段即可。
您可能还想考虑使用Data Connections链接到您的原始数据，考虑到您拥有的数据集，这也非常简单。