CODEWITHSUNDEEP
c#wpfvisual-studiotextbox
Sebastian Hahn
Sebastian Hahn

Reputation: 11

Trying to get textbox input in C# wpf (2nd attempt)

I can't figure out how to do this correctly.

The "solution" here: "Get user input from textbox in WPF application" doesn't work, and it's about all I can find.

If I'm missing something simple, or if I'm simply going about this in entirely the wrong way please let me know.

Thanks in advance

<Window x:Class="WpfApplication2.MainWindow"
        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:WpfApplication2"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid Background="{DynamicResource {x:Static SystemColors.ActiveCaptionBrushKey}}">
        <TextBox x:Name="textBox" TextWrapping="Wrap" Text="TextBox" Margin="114,48,125,158" TextChanged="textBox_TextChanged"/>
        <Button x:Name="button" Content="Button" Margin="188,0,212,86" RenderTransformOrigin="0.5,0.5 Height="38" VerticalAlignment="Bottom" Click="button_Click"">
        </Button> >

    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApplication2
{
     public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void textBox_TextChanged(object sender, TextChangedEventArgs e)
        {

        }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            /// trying to get textbox input via button press
            /// this doesn't work:
            string input = textBox_TextChanged.Text;

            ///neither does var input = textBox_TextChanged.Text
            /// or anything else in the textBox_Textchanged position
            /// I'm pulling my hair out...
        }

    }
}

Upvotes: 0

Views: 2623

Answers (4)

Tim Oehler
Tim Oehler

Reputation: 109

You have an extra quote at the end of your Button tag (after VerticalAlignment="Bottom"").

Upvotes: 1

h0od
h0od

Reputation: 69

You should get the content of the textbox by the Text property:

string t = textbox.Text;

But there is one thing in your xaml that prevents you from accessing the textbox that way by variable from code-behind, and that's the use of the "x:Name" attribute. Use the "Name" attribute (without namespace decoration) instead and I think it should work.

In WPF, what are the differences between the x:Name and Name attributes?

Upvotes: 1

Stef Geysels
Stef Geysels

Reputation: 1047

This is indeed not the right way to approach the text. Several approaches are possible. I'll give you 2:

Approaches 1:

 private void button_Click(object sender, RoutedEventArgs e)
    {
        string input = textBox.Text 
    }

On button_Click you can try to get the Text direct from the named TextBox.

Approaches 2:

namespace WpfApplication2
{
 public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private string text { get; set; }

    private void textBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        text=((TextBox)sender).Text;
    }

    private void button_Click(object sender, RoutedEventArgs e)
    {
        /// whatever you will do 
    }

}
}

Every time you change the TextBox.Text it is stored in a private property "text". On button_Click, you can get the value there.

Upvotes: 0

Dark
Dark

Reputation: 89

I believe you meant :

input = textBox.Text;

textBox is the name of your text box. At least that's what I see in the xml. The name you used is the name of the method subscribed to TextChanged .

Upvotes: 1

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