C#

CSV Special Chars - Comma, Double-Quotes

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The Chilkat CSV class/component automatically handles special characters which include double-quotes, and the delimiter character (comma or semicolon).

The Chilkat CSV library/component/class is freeware. The downloads for .NET, C++, Perl, Java, Ruby, and Python contain all of the Chilkat classes, some of which are freeware and some of which require licensing.

C#

bool success = false;

//  This example program loads a file (sample.csv)
//  that contains this content:
//  
//  year,color,country,food
//  2001,red,France,cheese
//  2005,blue,"United States",hamburger
//  2008,green,Italy,pasta
//  1998,orange,Japan,sushi
//  
//  The first row contains the column names.
//  This file is available at:
//  http://www.chilkatsoft.com/testData/sample.csv

Chilkat.Csv csv = new Chilkat.Csv();

//  Prior to loading the CSV file, indicate that the 1st row
//  should be treated as column names:
csv.HasColumnNames = true;

//  Load the CSV records from the file:

success = csv.LoadFile("sample.csv");
if (success != true) {
    Debug.WriteLine(csv.LastErrorText);
    return;
}

//  A field may contain the delimiter character (in this case
//  the delimiter is a comma):
//  Change "cheese" to "cheese,baguette"
//  ("cheese" is at row=0, column=3
success = csv.SetCell(0,3,"cheese,baguette");

//  A field may also contain double-quotes:
//  Change blue to shiny "metallic" blue
success = csv.SetCell(1,1,"shiny \"metallic\" blue");

//  Write the updated CSV to a string and display:
string csvDoc;
csvDoc = csv.SaveToString();
Debug.WriteLine(csvDoc);

//  Save the CSV to a file:
success = csv.SaveFile("out.csv");
if (success != true) {
    Debug.WriteLine(csv.LastErrorText);
}

//  The out.csv contains this:
//  year,color,country,food
//  2001,red,France,"cheese,baguette"
//  2005,"shiny ""metallic"" blue","United States",hamburger
//  2008,green,Italy,pasta
//  1998,orange,Japan,sushi