C#•3y ago

✅ WPF Label does not print out the first underline _

private void btn_Login(object sender, RoutedEventArgs e)
        {
            username = txtbox_login_username.Text;
            password = txtbox_login_password.Text;
            connectionString = "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.218.128)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=orcl.localdomain)));User Id=dmsadm;Password=dmsadm;";
            OracleConnection connection = new OracleConnection(connectionString);
            connection.Open();


            string loginid_sqlstring = "_ SE_LECT USER_ID FROM DMS_USERS WHERE USERNAME = 'test';";
            TestLabel1.Content = (loginid_sqlstring);
            string loginpassword_sqlstring = "SELECT password FROM DMS_USERS WHERE USERID = '" + loginid_sqlstring + "';";
        }

private void btn_Login(object sender, RoutedEventArgs e)
        {
            username = txtbox_login_username.Text;
            password = txtbox_login_password.Text;
            connectionString = "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.218.128)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=orcl.localdomain)));User Id=dmsadm;Password=dmsadm;";
            OracleConnection connection = new OracleConnection(connectionString);
            connection.Open();


            string loginid_sqlstring = "_ SE_LECT USER_ID FROM DMS_USERS WHERE USERNAME = 'test';";
            TestLabel1.Content = (loginid_sqlstring);
            string loginpassword_sqlstring = "SELECT password FROM DMS_USERS WHERE USERID = '" + loginid_sqlstring + "';";
        }

private void btn_Login(object sender, RoutedEventArgs e)
        {
            username = txtbox_login_username.Text;
            password = txtbox_login_password.Text;
            connectionString = "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.218.128)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=orcl.localdomain)));User Id=dmsadm;Password=dmsadm;";
            OracleConnection connection = new OracleConnection(connectionString);
            connection.Open();


            string loginid_sqlstring = "_ SE_LECT USER_ID FROM DMS_USERS WHERE USERNAME = 'test';";
            TestLabel1.Content = (loginid_sqlstring);
            string loginpassword_sqlstring = "SELECT password FROM DMS_USERS WHERE USERID = '" + loginid_sqlstring + "';";
        }

private void btn_Login(object sender, RoutedEventArgs e)
        {
            username = txtbox_login_username.Text;
            password = txtbox_login_password.Text;
            connectionString = "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.218.128)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=orcl.localdomain)));User Id=dmsadm;Password=dmsadm;";
            OracleConnection connection = new OracleConnection(connectionString);
            connection.Open();


            string loginid_sqlstring = "_ SE_LECT USER_ID FROM DMS_USERS WHERE USERNAME = 'test';";
            TestLabel1.Content = (loginid_sqlstring);
            string loginpassword_sqlstring = "SELECT password FROM DMS_USERS WHERE USERID = '" + loginid_sqlstring + "';";
        }

Something is wrong with the --> TestLabel1.Content = (loginid_sqlstring);
It does not print out the first underline for whatever reason

FischiOP•3/7/23, 11:17 PM

<Window x:Class="DMS.Login"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:DMS"
        mc:Ignorable="d"
        Title="Login" Height="200" Width="280">
    <Grid>
        <Button Content="Login" HorizontalAlignment="Left" Margin="94,94,0,0" VerticalAlignment="Top" Click="btn_Login"/>
        <TextBox x:Name="txtbox_login_username" HorizontalAlignment="Left" Margin="107,14,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
        <Label Content="Username:" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="txtbox_login_password" HorizontalAlignment="Left" Margin="107,47,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
        <Label Content="Password:" HorizontalAlignment="Left" Margin="10,41,0,0" VerticalAlignment="Top"/>
        <Label x:Name="TestLabel1" Content="" HorizontalAlignment="Center" Margin="0,130,0,0" VerticalAlignment="Top"/>
    </Grid>
</Window>

<Window x:Class="DMS.Login"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:DMS"
        mc:Ignorable="d"
        Title="Login" Height="200" Width="280">
    <Grid>
        <Button Content="Login" HorizontalAlignment="Left" Margin="94,94,0,0" VerticalAlignment="Top" Click="btn_Login"/>
        <TextBox x:Name="txtbox_login_username" HorizontalAlignment="Left" Margin="107,14,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
        <Label Content="Username:" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="txtbox_login_password" HorizontalAlignment="Left" Margin="107,47,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
        <Label Content="Password:" HorizontalAlignment="Left" Margin="10,41,0,0" VerticalAlignment="Top"/>
        <Label x:Name="TestLabel1" Content="" HorizontalAlignment="Center" Margin="0,130,0,0" VerticalAlignment="Top"/>
    </Grid>
</Window>

FischiOP•3/7/23, 11:17 PM

thats my wpf

Klarth•3/7/23, 11:35 PM

Looks like it's an issue with LabelLabel. The first __ might have some special meaning.

Klarth•3/7/23, 11:35 PM

Klarth•3/7/23, 11:35 PM

<TextBlock
    x:Name="TestLabel1"
    Margin="0,130,0,0"
    HorizontalAlignment="Center"
    VerticalAlignment="Top"
    TextWrapping="Wrap"
    Text="" />

<TextBlock
    x:Name="TestLabel1"
    Margin="0,130,0,0"
    HorizontalAlignment="Center"
    VerticalAlignment="Top"
    TextWrapping="Wrap"
    Text="" />

Klarth•3/7/23, 11:36 PM

You should use TextBlockTextBlock to display pretty much all text.

Klarth•3/7/23, 11:39 PM

https://stackoverflow.com/questions/7861699/cannot-see-underscore-in-wpf-content

Stack Overflow

Cannot see _ (underscore) in WPF content

A very simple question:

Why I cant see _ (underscore) in WPF content?

For instance the content of

<Label Content="test_t" Name="label2" />
is shown as "testt" (with the underscore not sh...

KKlarth Looks like it's an issue with `Label`. The first `_` might have some special mea...

FischiOP•3/7/23, 11:45 PM

Oh okay i see. Yeah i am new to WPF so i always used label to check my output since i dont have a console which i was used to. Thanks for you answer

✅ WPF Label does not print out the first underline _

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