Binding problems

Question

hello

I am making a simple application on wpf, but the textbox doesn't want to bind to my VM

    <Window.DataContext>
        <vm:MainWindowVM />
    </Window.DataContext>

    <Grid Margin="5">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>

        <Label
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Content="How many do you want to create: " />

        <TextBox Grid.Column="1" Text="{Binding Num}" />

        <Button
            Grid.Column="1"
            HorizontalAlignment="Right"
            VerticalAlignment="Center"
            Style="{StaticResource MenuItem}">

            <Button
                Margin="0,0,10,0"
                VerticalAlignment="Center"
                Command="{Binding CreateNewTextBoxCommand}"
                Content="Create"
                FontStyle="Oblique"
                Foreground="White"
                Style="{StaticResource MenuItem}" />
        </Button>
    </Grid>

public string Num { get; set; }
        

Answer 1

HI,
your code work without problems. Please, show your ViewModel. Try following demo:

XAML:

<Window x:Class="WpfApp1.Window006"  
        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:WpfApp1"  
        xmlns:vm="clr-namespace:WpfApp006"  
        mc:Ignorable="d"  
        Title="Window006" Height="450" Width="800">  
  <Window.Resources>  
    <Style x:Key="MenuItem" TargetType="{x:Type Button}">  
      <Setter Property="Margin" Value="5"/>  
    </Style>  
  </Window.Resources>  
  <Window.DataContext>  
    <vm:MainWindowVM />  
  </Window.DataContext>  
  
  <Grid Margin="5">  
    <Grid.RowDefinitions>  
      <RowDefinition Height="Auto" />  
      <RowDefinition Height="*" />  
    </Grid.RowDefinitions>  
  
    <Grid.ColumnDefinitions>  
      <ColumnDefinition Width="Auto" />  
      <ColumnDefinition Width="*" />  
    </Grid.ColumnDefinitions>  
  
    <Label  
             HorizontalAlignment="Center"  
             VerticalAlignment="Center"  
             Content="How many do you want to create: " />  
  
    <TextBox Grid.Column="1" Text="{Binding Num}" />  
  
    <Button  
             Grid.Column="1"  
             HorizontalAlignment="Right"  
             VerticalAlignment="Center"  
             Style="{StaticResource MenuItem}">  
  
      <Button  
                 Margin="0,0,10,0"  
                 VerticalAlignment="Center"  
                 Command="{Binding CreateNewTextBoxCommand}"  
                 Content="Create"  
                 FontStyle="Oblique"  
                 Foreground="White"  
                 Style="{StaticResource MenuItem}" />  
    </Button>  
  </Grid>  
</Window>  

and classes, please, see attached file because forum doesn't insert code.