private void button1_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "Excel|*.xlsx";
saveFileDialog1.Title = "Save file";
saveFileDialog1.ShowDialog();
// If the file name is not an empty string open it for saving.
if (saveFileDialog1.FileName != "" && Path.GetExtension(saveFileDialog1.FileName) == ".xlsx")
{
_variableService.Export(comboBox1.Text, comboBox2.Text, saveFileDialog1.FileName);
}
}
