private void button_Search_Click(object sender, EventArgs e)
{
if (textBox_Pattern.Text.Length > textBox_Text.Text.Length)
{
MessageBox.Show("Pattern must be shorter than text!!", "Error");
return;
}
if (textBox_Pattern.Text.Length == 0 || textBox_Text.Text.Length == 0)
{
MessageBox.Show("Please enter pattern and text!!", "Error");
return;
}
SelectSeracher(radioButton_Naive_Search.Checked, radioButton_Rabin_Karp_Search.Checked, radioButton_Knuth_Morris_Pratt_Search.Checked);
start_indexes = searcher.Search(textBox_Pattern.Text, textBox_Text.Text);
textBox_Text.Select(0, textBox_Text.Text.Length);
textBox_Text.SelectionColor = Color.Black;
foreach (int index in start_indexes)
{
textBox_Text.Select(index, textBox_Pattern.Text.Length);
textBox_Text.SelectionColor = Color.Red;
}
string plural_or_not;
if (start_indexes.Count == 1)
{
plural_or_not = "";
}
else
{
plural_or_not = "es";
}
label_Message.Text = "Found: " + start_indexes.Count.ToString() + " match" + plural_or_not;
searcher.ClearIndexes();
start_indexes.Clear();
}