Semantic Text Query In Windows 10

Here are the steps: 

Step 1: Open a blank app and add two TextBlocks and a button either from the toolbox or by copying the following XAML code into your grid.

<StackPanel Margin="10,40,0,0">
<TextBlock Text="Type the word to find" ></TextBlock>
<TextBox Name="textToFind" Width="200" Margin="0,10,0,0" HorizontalAlignment="Left"></TextBox>
<TextBlock Text="Type or Copy and Paste a sentence to find from " Margin="0,10,0,0" ></TextBlock>
<TextBox Name="sentence" Height="100" Width="300" HorizontalAlignment="Left" Margin="0,10,0,0" TextWrapping="Wrap"></TextBox>
<Button Name="find" Content="Find" Height="40" Width="120" Click="find_Click" Margin="0,10,0,0" ></Button>
<TextBlock Name="result" TextWrapping="Wrap" Width="300" HorizontalAlignment="Left"></TextBlock>
</StackPanel>

 

Step 2: Add the following namespaces to your project which is needed in further C# code.

using System.Collections.Generic;
using Windows.Data.Text;
using Windows.UI.Text;
using Windows.UI.Xaml.Documents;

Step 3: Copy and paste the following code to the cs page which will be called on button click event and the corresponding text will be highlighted.

private void find_Click(object sender, RoutedEventArgs e)
        {
            result.Text = "";
            var mySemanticTextQuery = new Windows.Data.Text.SemanticTextQuery(textToFind.Text);
            IReadOnlyList<Windows.Data.Text.TextSegment> ranges = mySemanticTextQuery.Find(sentence.Text);
            HighlightRanges(result, sentence.Text, ranges);
        }

        public void HighlightRanges(TextBlock tb, String TextContent, IReadOnlyList<TextSegment> ranges)
        {
            int currentPosition = 0;
            foreach (var range in ranges)
            {
                if (range.StartPosition > currentPosition)
                {
                    int length = (int)range.StartPosition - currentPosition;
                    var subString = TextContent.Substring(currentPosition, length);
                    tb.Inlines.Add(new Run() { Text = subString });
                    currentPosition += length;
                }
                var boldString = TextContent.Substring((int)range.StartPosition, (int)range.Length);
                tb.Inlines.Add(new Run() { Text = boldString, FontWeight = FontWeights.Bold });
                currentPosition += (int)range.Length;
            }
            if (currentPosition < TextContent.Length)
            {
                var subString = TextContent.Substring(currentPosition);
                tb.Inlines.Add(new Run() { Text = subString });
            }
            tb.Inlines.Add(new Run() { Text = "\r\n" });
        }

Step 4: Run your application and test yourself.