Question

我收到了一些文件，但我不知道这些文件中有多少列和行。如何使用通用模型创建通用加载器，我可以随时加载文件但获取不同的内容？

我写了这个，但知道我知道它并不总是同桌......

public override List<Object> getFile(string ab) {

    if (ab == "A") {
        ab = A;
    } else {
        ab = B;
    }
    List<FundPriceModel> models = new List<FundPriceModel>();

    FileStream filestream = new FileStream(ab, FileMode.Open, FileAccess.Read);
    using (StreamReader reader = new StreamReader(filestream, Encoding.UTF8)) {

        string line;
        bool isHeader = true;

        while ((line = reader.ReadLine()) != null) {

            FundPriceModel model = new FundPriceModel();

            if (isHeader) {

                headers = line.Split(spliter[0]);
                isHeader = false;
                continue;
            }
            string[] attributes = line.Split(spliter);

            model.LipperID = IfEmptyInt(attributes[0]);
            model.PriceDate = IfEmptyDateTime(attributes[1]);
            model.PriceCode = safeValue(attributes[2], v => v[0]);
            model.PriceType = safeValue(attributes[3], v => v[0]);
            model.PriceCurrency = safeValue(attributes[4], v => attributes[4]);
            model.PriceValueLC = IfEmptyFloat(attributes[5]);
            model.Estimate = safeValue(attributes[6], v => v[0]);

            Console.WriteLine(model.LipperID + "\t" + model.PriceDate + "\t" + model.PriceCode + "\t" + model.PriceType +
                "\t" + model.PriceCurrency + "\t" + model.PriceValueLC + "\t" + model.Estimate);

            models.Add(model);
        }
    }
}

Answer 1

如果DataTable足够通用，你可以使用它，它不是真正的模型＆＃39;。此代码不值得生产，仅演示如何从CSV加载。

private static void Main(string[] args)
{
    string filePath = @"C:\temp\tesst.csv";
    FileStream filestream = new FileStream(filePath, FileMode.Open, FileAccess.Read);

    DataTable inputTable = new DataTable();

    using (StreamReader reader = new StreamReader(filestream, Encoding.UTF8))
    {

        //Get headers and add columns
        string headers = reader.ReadLine();
        foreach (var s in headers.Split(','))
        {
            inputTable.Columns.Add(s, typeof (string));
        }

        //Add rows
        string line;
        while ((line = reader.ReadLine()) != null)
        {
            int colIndex = 0;
            DataRow dr = inputTable.NewRow();
            foreach (var s in line.Split(','))
            {
                dr[colIndex] = s;
                colIndex++;
            }
            inputTable.Rows.Add(dr);
        }
    }
}

动态表加载器

1 个答案: