//Calculate button private void CalculateToolStripButton_Click(object sender, EventArgs e) { var selectColumns = SelectTextBox.Text.Replace(" ", string.Empty).Split(','); var classColumn = ClassTextBox.Text.Replace(" ", string.Empty); var kElement = KtextBox.Text.ToString().Replace(" ", string.Empty); if (string.IsNullOrEmpty(classColumn) || selectColumns == null || selectColumns.Length == 0 || string.IsNullOrEmpty(kElement) || _newTestObject == null) { MessageBox.Show(@"Please add data"); } else { ToConsole(@"Calculating"); var knn = new Knn(); var answer = knn.Calculate(_newTestObject, int.Parse(kElement), _fileData, selectColumns, classColumn); ToConsole(@"Answer -> " + answer); } }