How Can I Efficiently Read and Process CSV Files in C#?

Streamlined CSV File Handling in C#

Importing and displaying CSV data in a C# DataGrid is a common task. However, manual string manipulation can be cumbersome. This guide demonstrates a more efficient approach using the .NET Base Class Library (BCL).

Leveraging TextFieldParser for Efficient CSV Parsing

The Microsoft.VisualBasic.FileIO.TextFieldParser class provides a powerful and flexible solution for parsing CSV files. Its customizable delimiter and field type handling simplifies data extraction.

Code Example

This optimized code snippet utilizes TextFieldParser:

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

using (TextFieldParser parser = new TextFieldParser(@"c:\temp\test.csv"))
{
    parser.TextFieldType = FieldType.Delimited;
    parser.SetDelimiters(",");

    while (!parser.EndOfData)
    {
        // Process each row
        string[] fields = parser.ReadFields();

        // Your data processing logic here
    }
}</code>

Further Learning

For more detailed explanations and examples, refer to these resources:

• MSDN: Reading Comma-Delimited Text Files in Visual Basic (Replace "https://www.php.cn/https://www.php.cn/link/2bec63f5d312303621583b97ff7c68bf/2bec63f5d312303621583b97ff7c68bf" with the actual MSDN https://www.php.cn/https://www.php.cn/link/2bec63f5d312303621583b97ff7c68bf/2bec63f5d312303621583b97ff7c68bf)
• MSDN: TextFieldParser Class (Replace "https://www.php.cn/https://www.php.cn/link/2bec63f5d312303621583b97ff7c68bf/2bec63f5d312303621583b97ff7c68bf" with the actual MSDN https://www.php.cn/https://www.php.cn/link/2bec63f5d312303621583b97ff7c68bf/2bec63f5d312303621583b97ff7c68bf)

Summary

The TextFieldParser class offers a significant improvement over manual CSV parsing in C#, resulting in cleaner, more efficient code.

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