Speech Calculator in WPF

Step 4

We add some STYLE for the various controls to the APP.XAML File.

APP.XAML

<Application x:Class="SpeechCalc.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml">
<Application.Resources>
<Style TargetType="RowDefinition">
<Setter Property="Height" Value="60" />

</Style>
<Style TargetType="ColumnDefinition">
<Setter Property="Width" Value="100"/>
</Style>

<Style TargetType="Button">

<Setter Property="Background" Value="#0086dc"/>
<Setter Property="Foreground" Value="#007" />
<Setter Property="Width" Value="60" />
<Setter Property="Height" Value="50" />
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="BorderBrush" Value="#007"/>
<Setter Property="BorderThickness" Value="10"/>
<Setter Property="FontSize" Value="20" />
<Setter Property="Margin" Value="20,0,20,0" />
</Style>
</Application.Resources>
</Application>

STEP 5

We write the following code in the MAINWINDOW.XAML.CS file. We add the namespace for Speech Recognigation.

MAINWINDOW.XAML.CS

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;
using System.Speech;
using System.Speech.Recognition;
using System.Speech.Recognition.SrgsGrammar;
using System.Xml;

namespace SpeechCalc
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
protected SpeechRecognizer SPVC;
public string op;
public string value;
public string voice;
public void InitializeVC()
{
SPVC = new SpeechRecognizer();
SPVC.Enabled = true;
SPVC.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(SPVC_SpeechRecognized);
}
public MainWindow()
{
InitializeComponent();
InitializeVC();
textbox1.Focus();
}
void SPVC_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
textbox1.Text = e.Result.Text;
voice = e.Result.Text;
}
private void textbox1_TextChanged_1(object sender, TextChangedEventArgs e)
{
if (textbox1.Text.Equals("One"))
{
btnOne.Focus();
}
if (textbox1.Text.Equals("Clear") || textbox1.Text.Equals("C"))
{
btnClear.Focus();
}
if(textbox1.Text.Equals("Space"))
{
btnDelete.Focus();
}
}

private void btnOne_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "1";
}

private void btnTwo_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "2";
}

private void btnThree_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "3";
}

private void btnPlus_GotFocus_1(object sender, RoutedEventArgs e)
{
value = txtShow.Text;
txtShow.Text = "";
op = "+";
}

private void btnFour_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "4";
}

private void btnFive_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "5";
}

private void btnSix_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "6";
}

private void btnMinus_GotFocus_1(object sender, RoutedEventArgs e)
{
value = txtShow.Text;
txtShow.Text = "";
op = "-";
}

private void btnSeven_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "7";
}

private void btnEight_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "8";
}

private void btnNine_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "9";
}

private void btnMul_GotFocus_1(object sender, RoutedEventArgs e)
{
value = txtShow.Text;
txtShow.Text = "";
op = "*";
}

private void btnDot_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += ".";
}

private void btnZero_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text += "0";
}

private void btnEqual_GotFocus_1(object sender, RoutedEventArgs e)
{
switch (op)
{
case "+":
txtShow.Text = Convert.ToString(Convert.ToDecimal(value.ToString()) + Convert.ToDecimal(txtShow.Text));
break;
case "-":
txtShow.Text = Convert.ToString(Convert.ToDecimal(value.ToString()) - Convert.ToDecimal(txtShow.Text));
break;
case "/":
txtShow.Text = Convert.ToString(Convert.ToDecimal(value.ToString()) / Convert.ToDecimal(txtShow.Text));
break;
case "*":
txtShow.Text = Convert.ToString(Convert.ToDecimal(value.ToString()) * Convert.ToDecimal(txtShow.Text));
break;
default:
MessageBox.Show("Not a Valid Choice");
break;
}
}

private void btnDiv_GotFocus_1(object sender, RoutedEventArgs e)
{
value = txtShow.Text;
txtShow.Text = "";
op = "/";
}

private void btnClear_GotFocus_1(object sender, RoutedEventArgs e)
{
txtShow.Text = "";
}

private void btnDelete_GotFocus_1(object sender, RoutedEventArgs e)
{
Int32 l = Convert.ToInt32(txtShow.Text.Length) - 1;
if (txtShow.Text == "")
{

}
else {
txtShow.Text = txtShow.Text.Substring(0, l);
if (l < 1)
{
txtShow.Text = "";
}
} } } }

OUTPUT

Then we say for examle "one plus two" and then it gives the answer "three(3)" in the TextBox.

I hope this article help you.

Thank you J :) :)