How to simplify the multiple foreach using linq : <p>Here I have provided my sample c# code. </p>

<pre><code>foreach (var table in dataSet.Tables)
        {
            foreach (var field in table.Fields)
            {
                if (displayText.Contains(field.Name))
                {
                    displayText = displayText.Replace(field.Name, field.Id);
                }
            }
        }
</code></pre>

<p>Can anyone suggest me how to simply this code using linq?</p>
