How Can I Extract Sentences From Large Amount Of Text On Basis Of One Specific Word?

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I am using this code in order to extract sentences, I input word in TextBox1 and if large amount of text in tagetlistBox containing sentences with that word it appears in targetTextBox2. but so far i am generating only first sentence containing specific word. how can i do it for all the text. and extract all the sentences that have that specific word

C#

var regex = new Regex(textBox1.Text);
var text = targetListBox.Text;

var texts = text.Split('.');
foreach (var t in texts)
{
   if (regex.IsMatch(t))
   {
      targetTextBox2.Text = t.Trim();
   }
}

Posted 20-May-14 22:57pm

Asad_Iqbal

Updated 20-May-14 23:16pm

Nelek

v3

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Emre Ataseven 2-Jun-14 12:50pm

why are u using regex? You can just check it with text.Contains

1 solution

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DamithSL · Answer 1 · 2014-05-20T23:15:00

Solution 2

C#

var regex = new Regex(textBox1.Text);
List<string> matchingLines = new List<string>();
foreach (var listBoxItem in targetListBox.Items)// loop every item in your targetListBox
{
    var texts = listBoxItem.Text.Split('.');
    foreach (var t in texts)
    {
     if (regex.IsMatch(t))
     {
         matchingLines.Add(listBoxItem.Text);
         break;
     }
    }
}
targetTextBox2.Lines =matchingLines.ToArray();

Posted 20-May-14 23:15pm

DamithSL

Updated 2-Jun-14 7:00am

v4

Comments

Asad_Iqbal 2-Jun-14 3:31am

i tried it for a while but targetListbox.Items isn't supported and i got this as an output
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text:
System.Windows.Forms.RichTextBox, Text: