[英]How to cast string list into a custom datatype?
背景:我正在嘗試從包含字符串和雙精度字符的csv文件讀取。 我想保留字符串以用於搜索和索引目的,但能夠對列表中的double值執行數據分析。 我也不想在將整個csv文件分成不同的類別之前將其讀取到內存中,因此我試圖將其分配給具有從csv讀取的自定義數據類型的列表。
如何將單個列表項轉換為雙列表,然后將其添加到列表中?
class data
{
public List<string> timefrom { get; set; }
public List<string> timeto { get; set; }
public List<string> type { get; set; }
public List<string> site { get; set; }
public List<string> box { get; set; }
public List<string> group { get; set; }
public List<string> sourcecopy { get; set; }
public List<string> destcopy { get; set; }
public List<string> gridid { get; set; }
public List<string> stat { get; set; }
public List<double> value { get; set; }
public List<string> unit { get; set; }
public List<string> peak { get; set; }
}
class Class1
{
public List<data>
WANtpfromSite,
WANtpbyCG,
IncomingWritesbyCG,
LinkUtilbyCG,
BoxUtil,
CompressionCPU,
ReplicationCPU,
CompressionRatio,
DeduplicationRatio,
IncomingWritesbyBox,
IncomingWritesbyBoxReplicating,
IObyBox,
IObyBoxReplicating,
PacketLoss,
LineLatency;
public void getDayData(string directory)
{
string[] fileEntries;
fileEntries = System.IO.Directory.GetFiles(directory + "/home/www/info/long_term_stats");
string filePath = fileEntries[0];
System.IO.StreamReader sr = new System.IO.StreamReader(filePath);
List<string> Line;
int row = 1;
while (!sr.EndOfStream)
{
//Splits the line read into a list of string values
Line = sr.ReadLine().Split(',').ToList<string>();
// Here I'll probably use a switch case to set the variable, but this is an example of what it should do.
if (Line[8] == "Wan Throughput from site")
{
//Here is where I'm having the problem - it can't implicitely convert the string list to a data list because
// of that single double value within the list. How would I go about explicitely converting the "Line"
//variable to a <data> type?
WANtpfromSite = List < data > datatype;
}
row++;
}
}
好吧-我越看越多,看起來我需要的是一組DataTable元素。 我沒有列出列表,而是為每個變量類型設置了一個數據表。
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