private void btnCompare_Click(object sender, EventArgs e) { StringCompare sc = new StringCompare(Convert.ToInt32(cntSimilarity.Value), Convert.ToInt32(cntSimilarityShort.Value), Convert.ToInt32(cntTolerance.Value), Convert.ToInt32(cntToleranceShort.Value)); double similarity = 0; double tolerance = 0; bool result = sc.IsEqual(txt1.Text, txt2.Text, out similarity, out tolerance); /* * you can use sc.IsEqual(text1, text2) if you don't need to know the similarity and tolerance between two strings */ lblSimilarity.Text = "Similarity: " + Convert.ToInt32(similarity).ToString() + "%"; lblTolerance.Text = "Tolerance: " + Convert.ToInt32(tolerance).ToString() + "%"; if (result == true) { lblResult.Text = "Equal"; } else { lblResult.Text = "Not Equal"; } }