I want to load the data from text file ..and i successfully did it by loading it in textbrowser....Now I want to load the specific characters into line edit whenever I encounter 0 in string of text file .....I succededd here but the program shows errror
Error message:::The application has requested the runtime to terminate in a unusual way
Please contact the application support team for more information
My Code::
Qt Code: 
  1. void MainWindow::on_pushButton_clicked()
  2. {
  3.    QString filename = QFileDialog::getOpenFileName(this, tr("wew"),"",tr("allfiles(*.txt)"));
  4.    QFile file(filename);
  5.       if(file.open(QIODevice::ReadOnly | QIODevice::Text));
  6.       {
  7.       QTextStream in(&file);
  8.          //QString mm;
  9.  
  10.       QString line;
  11.       //char *ptr;
  12.      // QByteArray ba;
  13.          while (!in.atEnd())
  14.       {
  15.               line = in.readLine(0);//reads whole text file and loads it to Qstring line
  16.              // ba=line.toLatin1();
  17.  
  18.  
  19. //line.fromLatin1(ba,-1);
  20.   ui->textBrowser->setText(line);
  21.          }
  22.  
  23.          for(int i=0;i<=line.length();++i)
  24.              {
  25.  
  26.              // ba=mm.toLatin1();
  27.               //*ptr=ba.data();
  28.              // if(line.at(i)==QChar('s'))
  29.               //{
  30.               //line.append("ssss");
  31.               //}
  32.             QChar ch=line.at(i).toAscii();
  33.             int chvalue=ch.toAscii();
  34.             if(chvalue==48)
  35.             {
  36.             ui->lineEdit->setText(ch);
  37.             }
  38.              }
  39.  
  40.         file.close();
  41.  
  42.     }
  43. }
To copy to clipboard, switch view to plain text mode