Is there a quick way to convert an entity to .csv file?

Question

at present, I have:

        string outputRow = string.Empty;
        foreach (var entityObject in entityObjects)
        {
            outputRow = entityObject.f         


        

Answer 1

I took Leniel's suggestion and wrapped it up in a full featured "writer" that also allows you to filter the properties you want written. Here's the code for your usage:

public class CsvFileWriter
{
    public static void WriteToFile(string filePath, List objs, string[] propertyNames)
    {
        var builder = new StringBuilder();
        var propertyInfos = RelevantPropertyInfos(propertyNames);
        foreach (var obj in objs)
            builder.AppendLine(CsvDataFor(obj, propertyInfos));

        File.WriteAllText(filePath, builder.ToString());
    }

    public static void WriteToFileSingleFieldOneLine(string filePath, List objs, string propertyName)
    {
        var builder = new StringBuilder();
        var propertyInfos = RelevantPropertyInfos(new[] { propertyName });
        for (var i = 0; i < objs.Count; i++)
        {
            builder.Append(CsvDataFor(objs[i], propertyInfos));

            if (i < objs.Count - 1)
                builder.Append(",");
        }

        File.WriteAllText(filePath, builder.ToString());
    }

    private static List RelevantPropertyInfos(IEnumerable propertyNames)
    {
        var propertyInfos = typeof(T).GetProperties().Where(p => propertyNames.Contains(p.Name)).ToDictionary(pi => pi.Name, pi => pi);
        return (from propertyName in propertyNames where propertyInfos.ContainsKey(propertyName) select propertyInfos[propertyName]).ToList();
    }

    private static string CsvDataFor(object obj, IList propertyInfos)
    {
        if (obj == null)
            return "";

        var builder = new StringBuilder();

        for (var i = 0; i < propertyInfos.Count; i++)
        {
            builder.Append(propertyInfos[i].GetValue(obj, null));

            if (i < propertyInfos.Count - 1)
                builder.Append(",");
        }

        return builder.ToString();
    }
}