Qt - reading from a text file

Question

Hello world,

I have a table view with three columns; I have just passed to write into text file using this code

QFile file("/home/hamad/lesson11.txt");
if(!file.open(QIODevice::WriteOnly)) {
    QMessageBox::information(0,"error",file.errorString());
}
QString dd;

for(int row=0; row < model->rowCount(); row++) {
     dd = model->item(row,0)->text() +  ","
                 + model->item(row,1)->text() +  ","
                 + model->item(row,2)->text();

     QTextStream out(&file);
     out << dd << endl;
 }

But I'm not succeed to read the same file again, I tried this code but I don't know where is the problem in it

QFile file("/home/hamad/lesson11.txt");
QTextStream in(&file);
QString line = in.readLine();
while(!in.atEnd()) {

    QStringList  fields = line.split(",");

    model->appendRow(fields);

}

Any help please ?

Answer 1

Do you open the file again like you did the first time? I think that might be your issue.

Answer 2

You have to replace string line

QString line = in.readLine();

into while:

QFile file("/home/hamad/lesson11.txt");
if(!file.open(QIODevice::ReadOnly)) {
    QMessageBox::information(0, "error", file.errorString());
}

QTextStream in(&file);

while(!in.atEnd()) {
    QString line = in.readLine();    
    QStringList fields = line.split(",");    
    model->appendRow(fields);    
}

file.close();

Answer 3

I solved by myself, I will post the currect code as a refernce

 while(!in.atEnd()){
         QString line = in.readLine();
         QList<QStandardItem *> items;
         QStringList fields = line.split(",");
         foreach (QString text, fields)
             items.append(new QStandardItem((QString)text));

         model->appendRow(items);
     }