private void btnExecute_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(txtRegex.Text))
{
MessageBox.Show("Insert the regular expression", Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (string.IsNullOrWhiteSpace(txtSentence.Text))
{
MessageBox.Show("Insert the sentence", Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
Regex regex = new Regex(txtRegex.Text, RegexOptions.IgnoreCase);
var match = regex.Match(txtSentence.Text);
lstGroups.Items.Clear();
lstGroups.Items.Add(string.Format("Success: {0}", match.Success));
if (!match.Success)
{
return;
}
foreach (string groupName in regex.GetGroupNames())
{
CheckedInformation checkedInfo = new CheckedInformation(groupName, match.Groups[groupName].Index, match.Groups[groupName].Length);
lstGroups.Items.Add(checkedInfo);
}
}
private void lstGroups_SelectedIndexChanged(object sender, EventArgs e)
{
CheckedInformation checkedInfo = lstGroups.SelectedItem as CheckedInformation;
if (checkedInfo == null)
{
return;
}
if (txtSentence.Text.Length > checkedInfo.Start)
{
txtSentence.SelectionStart = checkedInfo.Start;
}
if (txtSentence.Text.Length > checkedInfo.Start + checkedInfo.Length)
{
txtSentence.SelectionLength = checkedInfo.Length;
}
else
{
txtSentence.SelectionLength = txtSentence.Text.Length - txtSentence.SelectionStart;
}
}
