Excel spreadsheets are grid-based documents used to organize information in an organized manner. People all around the world use spreadsheets to create tables for business or personal needs. Over the years, Excel spreadsheets have played an important role in easing the tedious process of managing data with a variety of functionalities. In this article, you will learn how to create an Excel document in C++ and how to write data into Excel sheets in C++ by using Spire.XLS for C++.
Install Spire.XLS for C++
There are two ways to integrate Spire.XLS for C++ into your application. One way is to install it through NuGet, and the other way is to download the package from our website and copy the libraries into your program. Installation via NuGet is simpler and more recommended. You can find more details by visiting the following link.
Integrate Spire.XLS for C++ in a C++ Application
Write Text or Number Values to Cells in C++
Spire.XLS for C++ provides the Workbook class and the Worksheet class to represent an Excel document and a worksheet, respectively. Users can have access to a specific cell using Worksheet->GetRange(int row, int column) method. Then, assign a text value or a number value to the cell using CellRange->SetText() or CellRange->SetNumberValue() method. The following are the detailed steps:
- Create a Workbook object.
- Get the first worksheet using Workbook->GetWorksheets()->Get() method.
- Get a specific cell using Worksheet->GetRange(int row, int column) method.
- Add a text value or a number values to a specified cell using CellRange->SetText() or CellRange->SetNumberValue() method.
- Save the workbook to an Excel file using Workbook->SaveToFile() method.
- C++
#include "Spire.Xls.o.h";
using namespace Spire::Xls;
int main() {
//Specify output file path and name
std::wstring outputPath = L"Output\\";
std::wstring outputFile = outputPath + L"WriteIndividualValuesToCells.xlsx";
//Create a Workbook object
intrusive_ptr<Workbook> workbook = new Workbook();
//Get the first sheet
intrusive_ptr<Worksheet> sheet = dynamic_pointer_cast<Worksheet>(workbook->GetWorksheets()->Get(0));
//Write text and numbers to the specified cells
sheet->GetRange(1, 1)->SetText(L"Name");
sheet->GetRange(1, 2)->SetText(L"Age");
sheet->GetRange(1, 3)->SetText(L"Department");
sheet->GetRange(1, 4)->SetText(L"Hire Date");
sheet->GetRange(1, 1)->SetText(L"Name");
sheet->GetRange(2, 1)->SetText(L"Hazel");
sheet->GetRange(2, 2)->SetNumberValue(29);
sheet->GetRange(2, 3)->SetText(L"Marketing");
sheet->GetRange(2, 4)->SetText(L"2021-02-26");
sheet->GetRange(3, 1)->SetText(L"Tina");
sheet->GetRange(3, 2)->SetNumberValue(27);
sheet->GetRange(3, 3)->SetText(L"Human Resource");
sheet->GetRange(3, 4)->SetText(L"2020-07-13");
sheet->GetRange(4, 1)->SetText(L"Amy");
sheet->GetRange(4, 2)->SetNumberValue(35);
sheet->GetRange(4, 3)->SetText(L"Development");
sheet->GetRange(4, 4)->SetText(L"2019-04-01");
//Autofit column width
sheet->GetAllocatedRange()->AutoFitColumns();
//Apply style to the first row
intrusive_ptr <CellStyle> style = dynamic_pointer_cast<CellStyle>(workbook->GetStyles()->Add(L"newStyle"));
style->GetFont()->SetIsBold(true);
sheet->GetRange(1, 1, 1, 4)->SetStyle(style);
//Save to file
workbook->SaveToFile(outputFile.c_str(), ExcelVersion::Version2016);
workbook->Dispose();
}
Write Arrays to Specified Cell Ranges in C++
Spire.XLS for C++ provides the Worksheet->InsertArray() method, allowing programmers to write vectors into the specified cell range of a worksheet. Before writing arrays to worksheets, you need to convert them to vectors. The steps to write arrays to a worksheet are as follows:
- Create a Workbook object.
- Get the first worksheet using Workbook->GetWorksheets()->Get() method.
- Create an array and convert it to one vector or multiple vectors.
- Insert the vector(s) to worksheet using Worksheet->InsertArray() method.
- Save the workbook to an Excel file using Workbook->SaveToFile() method.
- C++
#include "Spire.Xls.o.h";
using namespace Spire::Xls;
using namespace std;
int main() {
//Specify output file path and name
wstring outputPath = L"Output\\";
wstring outputFile = outputPath + L"WriteArraysToCellRanges.xlsx";
//Create a Workbook object
intrusive_ptr<Workbook> workbook = new Workbook();
//Get the first sheet
intrusive_ptr<Worksheet> sheet = dynamic_pointer_cast<Worksheet>(workbook->GetWorksheets()->Get(0));
//Create a one-dimensional array
wstring oneDimensionalArray[6] = { L"January", L"February", L"March", L"April", L"May", L"June" };
//Convert array to vector
vector<LPCWSTR> vec;
for (size_t i = 0; i < sizeof(oneDimensionalArray) / sizeof(oneDimensionalArray[0]); i++)
{
vec.push_back(oneDimensionalArray[i].c_str());
}
//Insert vector to worksheet
sheet->InsertArray(vec, 1, 1, false);
//Create a two-dimensional array
wstring twoDimensionalArray[4][5] = {
{L"Name", L"Age", L"Sex", L"Dept.", L"Tel."},
{L"John", L"25", L"Male", L"Development", L"654214"},
{L"Albert", L"24", L"Male", L"Support", L"624847"},
{L"Amy", L"26", L"Female", L"Sales", L"624758"}
};
//Get row number and column number
int rowNum = sizeof(twoDimensionalArray) / sizeof(twoDimensionalArray[0]);
int columnNum = sizeof(twoDimensionalArray[0]) / sizeof(twoDimensionalArray[0][0]);
//Split 2D array into multiple 1D vectors
for (size_t i = 0; i < rowNum; i++)
{
vector<LPCWSTR> vec_temp;
for (size_t j = 0; j < columnNum; j++)
{
vec_temp.push_back(twoDimensionalArray[i][j].c_str());
}
//Insert vector into worksheet
sheet->InsertArray(vec_temp, 4 + i, 1, false);
}
//Autofit column width
sheet->GetAllocatedRange()->AutoFitColumns();
//Apply style to the first row
intrusive_ptr <CellStyle> style = dynamic_pointer_cast<CellStyle>(workbook->GetStyles()->Add(L"newStyle"));
style->GetFont()->SetIsBold(true);
sheet->GetRange(1, 1, 1, 6)->SetStyle(style);
sheet->GetRange(4, 1, 4, 5)->SetStyle(style);
//Save to file
workbook->SaveToFile(outputFile.c_str(), ExcelVersion::Version2016);
workbook->Dispose();
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
