TextWrapping="NoWrap" - This only takes you so far, as now it will not breach and drop onto another line. It also won't stretch the control as the digits are appended. So the size of your control will decide the fate of how much of the text is displayed.HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden" <TextBox Name="tbox1" Text="Test" VerticalContentAlignment="Center" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden" TextWrapping="NoWrap" /> private void Unio_mod2_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Return)
{
string mod1_ctrl;
mod1_ctrl = unio_mod2.Text;
var ctrl = new Kontrolle_Scan();
// as you can see when I pass the mod1_ctrl to the other class
// then I want to pass it as single text with no spaces and as
// you can see mod1_ctrl gets its data from the textbox which is
// Unio_mod2.
ctrl.Auswertung_mod1(mod1_ctrl); // code for this can found below
var mod1_temp = ctrl.get_mod1_ctrl();
// rest is not important for you
//MessageBox.Show(mod1_temp.ToString());
int SK1count = ctrl.Karte1_existiert(mod1_ctrl);
//MessageBox.Show(SK1count.ToString());
//MessageBox.Show("Number of SK1 cards in UNIO DB is " + SK1count.ToString());
if (SK1count != 0)
{
MessageBox.Show("Diese Signal Karte 1 wurde bereits in einem anderen UNIO-Modul verwendet");
unio_mod2.Text = "";
}
else
{
if (mod1_temp != 1 && mod1_temp != -1)
{
unio_mod2.Background = Brushes.Red;
const string caption = "Entscheidung akzeptiert.";
var result = System.Windows.Forms.MessageBox.Show(String.Format("Das eingescannte Modul ist nicht in den Datenbanken vorhanden. \nMöchten Sie das Modul trotzdem eintragen?"), caption, System.Windows.Forms.MessageBoxButtons.YesNo).ToString();
if (result == "No")
{
unio_mod2.Background = Brushes.White;
unio_mod2.Text = "";
}
else if (result == "Yes")
{
mod1_temp = 1;
}
}
else if(mod1_temp == -1)
{
unio_mod2.Text = "";
unio_mod2.Focus();
}
else if (mod1_temp == 1)
{
if (unio_mod2.Text.Length >= 30 && unio_mod2.Text.Length <= 40 && unio_mod2.Text != unio_mod1.Text)
{
mod1 = unio_mod2.Text;
unio_mod2.Background = Brushes.Green;
unio_mod3.Focus();
}
}
}public void Auswertung_mod1(string mod1_temp)
{
DataGridAdapter_4AI.Fill(ds._4AI);
DataGridAdapter_4AO.Fill(ds._4AO);
DataGridAdapter_2AI2AO.Fill(ds._2AI2AO);
DataGridAdapter_PT100.Fill(ds.PT100);
if (mod1_temp.Substring(0, 3)== "SAR" || mod1_temp.Length<13)
{
MessageBox.Show("Sie haben den falschen Code gescannt. \nBitte scannen Sie den korrekten Datenmatrizencode");
mod1 = -1;
}
else
{
string filter_mod1 = mod1_temp.Substring(13, 6);
var temp1 = ds._4AI.Where(o => o.Herstellerseriennummer == filter_mod1).Count();
var temp2 = ds._4AO.Where(o => o.Herstellerseriennummer == filter_mod1).Count();
var temp3 = ds._2AI2AO.Where(o => o.Herstellerseriennummer == filter_mod1).Count();
var temp4 = ds.PT100.Where(o => o.Herstellerseriennummer == filter_mod1).Count();
mod1 = temp1 + temp2 + temp3 + temp4;
}
}string[] lines = unio_mod2.Text.Split('\n');
MessageBox.Show(lines[0]);<TextBox x:Name="LearnTextBox" HorizontalAlignment="Left" Height="23" Margin="83,173,0,0" VerticalAlignment="Top" Width="620" Cursor="Pen" MaxLength="39" AcceptsReturn="True" KeyDown="LearnTextBox_KeyDown">
</TextBox>namespace LearnTextboxKeyDownEvent
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
LearnTextBox.Focus();
}
private void LearnTextBox_KeyDown(object sender, KeyEventArgs e)
{
if(e.Key == Key.Return)
{
string text = LearnTextBox.Text;
MessageBox.Show(text);
}
}
}
}
// In view code:
public ScannerInputTextBox : TextBox
{
public event EventHandler DataReady;
ScannerInputTextBox()
: base()
{
:
isWaitingForInput = true;
timer = new DispatcherTimer();
timer.Tick += (o,e) => FireDataReadyEvent();
timer.Interval = TimeSpan.FromSeconds(1); // wait for input to complete in 1 second
}
OnTextChange()
{
if (!isWaitingForInput)
return;
// reset the timer to keep waiting
timer.Stop();
timer.Start();
}
FireDataReadyEvent()
{
isWaitingForInput = false;
timer.Stop();
DataReady?.Invoke(...);
isWaitingForInput = true;
}
} // end of custom ScannerInputTextBox control
// In your view model code:
InputViewModel()
{
scannerInputTextBox.DataReady += (o, e) => OnDataReady;
}
OnDataReady()
{
var fourLineText = scannerInputTextBox.Text.Split('\n');
var joinedText = string.Join("", fourLineText);
scannerInputTextBox.Text = joinedText;
// do rest of processing of joinedText to do your database queries, etc.
}
