How Can I Efficiently Parse CSV Files in C#?

C# CSV File Analysis: Full Guide

Analyze the CSV (comma segmental value) file in C#is a common task. Although you can build a parser yourself, fortunately, the .NET framework provided a built -in solution.

The default CSV parser in the c#

The default CSV parser in C#is , which is located in the

program concentration. To use it, add the following reference to your project:

TextFieldParser Microsoft.VisualBasic Use TextFieldparser to perform CSV parsing

<code>添加 > 引用... > Microsoft.VisualBasic</code>

After adding a reference, you can use the following code to analyze the CSV file:

The disadvantages of reading CSV using ODBC/OLE DB

<code class="language-csharp">using System.IO;
using Microsoft.VisualBasic.FileIO;

public static class CsvParser
{
    public static IEnumerable<string[]> Parse(string filePath)
    {
        using (var parser = new TextFieldParser(filePath))
        {
            parser.TextFieldType = FieldType.Delimited;
            parser.SetDelimiters(",");
            while (!parser.EndOfData)
            {
                yield return parser.ReadFields();
            }
        }
    }
}</code>

Although you can read the CSV file through the text driver in ODBC/OLE DB, there are some shortcomings that make it less ideal:

Compared with the special CSV library, the performance overhead is greater

Limited function (for example, no built -in support for the title line)

Poor support and consistency implementation
• Read CSV
Read the CSV file according to the list name (using the first line of records as the title). You can use the CSVHELPER library. This is an excellent third -party option for processing CSV files.

Summary

Class and CSVHELPER libraries provide efficient and comprehensive solutions for parsing CSV files in C#, including the ability to process the title line and read the list by name. By using these tools, you can simplify the CSV analysis task and effectively process data.

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