C

Update CSV File

See more CSV Examples

Demonstrates how to read a CSV, update some cells, and save.

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

#include <C_CkCsv.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCsv csv;
    const char *csvDoc;

    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

    csv = CkCsv_Create();

    // Prior to loading the CSV file, indicate that the 1st row
    // should be treated as column names:
    CkCsv_putHasColumnNames(csv,TRUE);

    // Load the CSV records from the file:

    success = CkCsv_LoadFile(csv,"sample.csv");
    if (success != TRUE) {
        printf("%s\n",CkCsv_lastErrorText(csv));
        CkCsv_Dispose(csv);
        return;
    }

    // Change "cheese" to "baguette"
    // ("cheese" is at row=0, column=3
    success = CkCsv_SetCell(csv,0,3,"baguette");

    // Change "blue" to "magenta"
    success = CkCsv_SetCell(csv,1,1,"magenta");

    // Write the updated CSV to a string and display:

    csvDoc = CkCsv_saveToString(csv);
    printf("%s\n",csvDoc);

    // Save the CSV to a file:
    success = CkCsv_SaveFile(csv,"out.csv");
    if (success != TRUE) {
        printf("%s\n",CkCsv_lastErrorText(csv));
    }



    CkCsv_Dispose(csv);

    }