C++

CSV Insert Column

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Insert a new column into an existing CSV.

Note: This example requires Chilkat v9.5.0.89 or greater because the InsertColumn method was added in v9.5.0.89.

C++

#include <CkCsv.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkCsv csv;

    // Load the following CSV:

    //  Name;City;Weight
    //  John;Chicago;180
    //  Lisa;Denver;120

    // Indicate that the 1st line contains column names.
    csv.put_HasColumnNames(true);
    success = csv.LoadFile("qa_data/csv/insertColumnTest.csv");

    // We can insert a column before the 1st column.
    csv.InsertColumn(0);

    std::cout << csv.saveToString() << "\r\n";

    // The CSV now looks like this:

    //  ;Name;City;Weight
    //  ;John;Chicago;180
    //  ;Lisa;Denver;120

    // Set the cells in column 0.

    int col = 0;
    csv.SetColumnName(col,"id");
    csv.SetCell(0,col,"100");
    csv.SetCell(1,col,"101");

    std::cout << csv.saveToString() << "\r\n";

    // We now have:

    //  id;Name;City;Weight
    //  100;John;Chicago;180
    //  101;Lisa;Denver;120

    // Insert a new column between City and Weight
    // In other words, add a new column before the Weight column.
    int weightColumn = csv.GetIndex("Weight");
    std::cout << "Weight Column Index = " << weightColumn << "\r\n";
    csv.InsertColumn(weightColumn);

    std::cout << csv.saveToString() << "\r\n";

    // We now have:

    //  id;Name;City;;Weight
    //  100;John;Chicago;;180
    //  101;Lisa;Denver;;120

    // Set the cells in the new column:

    csv.SetColumnName(weightColumn,"Height");
    csv.SetCell(0,weightColumn,"6' 2\"");
    csv.SetCell(1,weightColumn,"5' 7\"");

    std::cout << csv.saveToString() << "\r\n";

    // We now have:

    //  id;Name;City;Height;Weight
    //  100;John;Chicago;"6' 2""";180
    //  101;Lisa;Denver;"5' 7""";120
    }