title: What is the use of stringbuilder.appendformat(); in asp.net c#?
body: <pre><code>foreach (string item in sc)
  {
      const string sqlStatement = "Delete From tablename Where field";
      stringbuilder.AppendFormat("{0}='{1}'; ", sqlStatemnt, item);
  }
  </code></pre>
  
  <p>I want to know tht what <code>stringbuilder.appendformat()</code> exactly does?</p>