Import or export data to Excel in C#, VB.NET, Java, C++, PHP

Cell values

EasyXLS™ library allows you to export data to Excel file. It enables the user to set the cell values and the data type of the cell by using the simple methods from ExcelCell class.

The default data type for the cells can be determined automatically, but we recommend using a defined one such as string, numeric, date, boolean or error because the use of an automatic data type can be resource and time consuming when exporting large Excel files.

EasyXLS also allows to import data from Excel file. The cell values can be accessed by using methods from ExcelCell class.

The component supports various data types that will be explained below.

String values
Numeric values
Date values
Boolean values
Error values
Formula values
Source code sample
Export data to Excel file
Import data from Excel file

String values

A string value is any finite sequence of characters (i.e., letters, numerals, symbols and punctuation marks).

Numeric values

A numeric value can be an integer, float or double number. The numeric values can be formatted with currency format, date format, accounting format, percentage format, fraction format or any custom format.

Date values

A date value is a calendar date that can include also the time. We recommend entering the date values in "MM/dd/yyyy HH:mm:ss" format (i.e. 12/23/2005 22:45:21) for optimization purposes. Later, to apply a different format, the cell can be formatted using the desired date format.

Boolean values

A boolean value can be a "true" or "false" value.

Error values

An error value is a specific error value from Excel (i.e. #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME? or #NULL!).

Formula values

A formula value is a mathematical expression that allows calculations for worksheets values.

Source code sample

The below example shows how to export data to Excel file.

The source code samples can be integrated in:

- ASP.NET web pages
- Windows applications
- Windows Forms (WinForms)
- Console applications
- Windows service applications
- ASP.NET MVC web applications
- PHP and ASP web pages
- Java applications

C++

// Create an instance of the class that exports Excel files
EasyXLS::IExcelDocumentPtr workbook;
hr = CoCreateInstance(__uuidof(EasyXLS::ExcelDocument),
NULL,
CLSCTX_ALL,
__uuidof(EasyXLS::IExcelDocument),
(void**) &workbook) ;

// Create two sheets
workbook->easy_addWorksheet_2("First tab");
workbook->easy_addWorksheet_2("Second tab");

// Get the table of data for the first sheet
EasyXLS::IExcelWorksheetPtr xlsFirstTab = 
        (EasyXLS::IExcelWorksheetPtr)workbook->easy_getSheetAt(0);
EasyXLS::IExcelTablePtr xlsFirstTable = xlsFirstTab->easy_getExcelTable();

// Add data in cells for report header
char* cellValue = (char*)malloc(11*sizeof(char));
char* columnNumber = (char*)malloc(sizeof(char));
for (int column=0; column<5; column++)
{
   strcpy(cellValue, "Column ");			
   _itoa(column+ 1, columnNumber , 10);

   xlsFirstTable->easy_getCell(0,column)->setValue( strcat(cellValue, columnNumber)); 
   xlsFirstTable->easy_getCell(0,column)->setDataType(DATATYPE_STRING);
}

// Add data in cells for report values
char* rowNumber = (char*)malloc(sizeof(char));
for (int row=0; row<100; row++)
{
    for (int column=0; column<5; column++)
    {
        strcpy(cellValue, "Data ");	
        _itoa(column+ 1, columnNumber , 10);
        _itoa(row + 1, rowNumber , 10);

        strcat(cellValue, rowNumber);
        strcat(cellValue, ", ");
        strcat(cellValue, columnNumber);

        xlsFirstTable->easy_getCell(row+1,column)->setValue(cellValue); 
        xlsFirstTable->easy_getCell(row+1,column)->setDataType(DATATYPE_STRING);
    }
}
			
// Export Excel file
workbook->easy_WriteXLSXFile("C:\\Samples\\Export data to Excel.xlsx");

Click here to see Continuous Code Listing


C++.NET

// Create an instance of the class that exports Excel files, having multiple sheets
ExcelDocument ^workbook = gcnew ExcelDocument(2);

// Set the sheet names
workbook->easy_getSheetAt(0)->setSheetName("First tab");
workbook->easy_getSheetAt(1)->setSheetName("Second tab");

// Get the table of data for the first sheet
ExcelWorksheet ^xlsFirstTab = 
        safe_cast<ExcelWorksheet^>(workbook->easy_getSheetAt(0));
ExcelTable ^xlsFirstTable = xlsFirstTab->easy_getExcelTable();

// Add data in cells for report header
for (int column=0; column<5; column++)
{
    xlsFirstTable->easy_getCell(0,column)->setValue(
            String::Concat("Column ",(column + 1).ToString()));
    xlsFirstTable->easy_getCell(0,column)->setDataType(DataType::STRING);
}

// Add data in cells for report values
for (int row=0; row<100; row++)
{
    for (int column=0; column<5; column++)
    {
        xlsFirstTable->easy_getCell(row+1,column)->setValue(String::Concat(
                "Data ", (row + 1).ToString(), ", ", (column + 1).ToString()));
        xlsFirstTable->easy_getCell(row+1,column)->setDataType(DataType::STRING);
    }
}

// Export Excel file
workbook->easy_WriteXLSXFile("C:\\Samples\\Export data to Excel.xlsx");

Click here to see Continuous Code Listing

.NET:

// Create an instance of the class that exports Excel files
$workbook = new COM("EasyXLS.ExcelDocument");

// Create the worksheets
$workbook->easy_addWorksheet_2("First tab");
$workbook->easy_addWorksheet_2("Second tab");

// Get the table of data for the first sheet
$xlsFirstTable = $workbook->easy_getSheetAt(0)->easy_getExcelTable();

// Add data in cells for report header
for ($column=0; $column<5; $column++)
{
    $xlsFirstTable->easy_getCell(0,$column)->setValue("Column " . ($column + 1));
    $xlsFirstTable->easy_getCell(0,$column)->setDataType($DATATYPE_STRING);
}

// Add data in cells for report values
for ($row=0; $row<100; $row++)
{
    for ($column=0; $column<5; $column++)
    {
        $xlsFirstTable->easy_getCell($row+1,$column)->setValue(
                "Data ".($row + 1).", ".($column + 1));
        $xlsFirstTable->easy_getCell($row+1,$column)->setDataType($DATATYPE_STRING);
    }
}

// Export Excel file
$workbook->easy_WriteXLSXFile("C:\Samples\Export data to Excel.xlsx");

Click here to see Continuous Code Listing


Java:

// Create an instance of the class that exports Excel files
$workbook = new java("EasyXLS.ExcelDocument"); 
	
// Create two sheets
$workbook->easy_addWorksheet("First tab");
$workbook->easy_addWorksheet("Second tab");

// Get the table of data for the first worksheet
$xlsFirstTable = $workbook->easy_getSheetAt(0)->easy_getExcelTable();

// Add data in cells for report header
for ($column=0; $column<5; $column++)
{
    $xlsFirstTable->easy_getCell(0,$column)->setValue("Column " . ($column + 1));
    $xlsFirstTable->easy_getCell(0,$column)->setDataType($DATATYPE_STRING);
}

// Add data in cells for report values
for ($row=0; $row<100; $row++)
{
    for ($column=0; $column<5; $column++)
    {
        $xlsFirstTable->easy_getCell($row+1,$column)->setValue(
                           "Data ".($row + 1).", ".($column + 1));
        $xlsFirstTable->easy_getCell($row+1,$column)->setDataType($DATATYPE_STRING);
    }
}

// Export the XLSX file
$workbook->easy_WriteXLSXFile("C:\Samples\Export data to Excel.xlsx");

Click here to see Continuous Code Listing

.NET:

# Create an instance of the class that exports Excel files, having two sheets
workbook = ExcelDocument(2)

# Set the sheet names
workbook.easy_getSheetAt(0).setSheetName("First tab")
workbook.easy_getSheetAt(1).setSheetName("Second tab")

# Get the table of data for the first worksheet
xlsFirstTable = workbook.easy_getSheetAt(0).easy_getExcelTable()

# Add data in cells for report header
for column in range(5):
	xlsFirstTable.easy_getCell(0,column).setValue("Column " + str(column + 1))
	xlsFirstTable.easy_getCell(0,column).setDataType(DataType.STRING)

# Add data in cells for report values
for row in range(100):
    for column in range(5):
        xlsFirstTable.easy_getCell(row+1,column).setValue("Data " + str(row + 1) + ", " + str(column + 1)) 
        xlsFirstTable.easy_getCell(row+1,column).setDataType(DataType.STRING)

# Export the XLSX file
workbook.easy_WriteXLSXFile("C:\\Samples\\Export data to Excel.xlsx")

Click here to see Continuous Code Listing


Java:

# Create an instance of the class that exports Excel files, having two sheets
workbook = gateway.jvm.ExcelDocument(2)

# Set the sheet names
workbook.easy_getSheetAt(0).setSheetName("First tab")
workbook.easy_getSheetAt(1).setSheetName("Second tab")

# Get the table of data for the first worksheet
xlsFirstTable = workbook.easy_getSheetAt(0).easy_getExcelTable()

# Add data in cells for report header
for column in range(5):
	xlsFirstTable.easy_getCell(0,column).setValue("Column " + str(column + 1))
	xlsFirstTable.easy_getCell(0,column).setDataType(gateway.jvm.DataType.STRING)

# Add data in cells for report values
for row in range(100):
    for column in range(5):
        xlsFirstTable.easy_getCell(row+1,column).setValue("Data " + str(row + 1) + ", " + str(column + 1)) 
        xlsFirstTable.easy_getCell(row+1,column).setDataType(gateway.jvm.DataType.STRING)

# Export the XLSX file
workbook.easy_WriteXLSXFile("C:\\Samples\\Export data to Excel.xlsx")

Click here to see Continuous Code Listing

The screen shot below represents the exported data to Excel file generated by the code sample above. The file has two worksheets (First Tab and Second Tab). The values and the data type of the cells from the first worksheet are set.

Export data to Excel file

EasyXLS allows you to export data to Excel file. The above code sample shows how to achieve this goal.

Import data from Excel file

EasyXLS allows you to import data from Excel file. The library permits reading cell values including formula results.

Getting started with EasyXLS Excel library

To download the trial version of EasyXLS Excel Library, press the below button:

If you already own a license key, you may login and download EasyXLS from your account.

Available for: Professional, Excel Writer, Excel Reader

EasyXLS Excel libraries:
.NET Excel Library
full .NET version to import, export or convert Excel files
COM+ Excel Library
full COM+ version to import, export or convert Excel files


Java Excel Library
full Java version to import, export or convert Excel files

File formats:
MS Excel 97 - 2003 MS Excel 2007 - 2019 MS Excel 2021 Office 365

Cell values

Table of contents

String values

Numeric values

See also:

Date values

See also:

Boolean values

Error values

Formula values

See also:

Source code sample

Export data to Excel file

See also:

Import data from Excel file

See also:

Getting started with EasyXLS Excel library

See also:

Related methods:

EasyXLS Excel libraries:

File formats: