title: C# : Printing variables and text in a textbox
body: <p>I need  to know the command that I can print a sentence like "the item <em>Peter</em> at row <em>233</em> and column <em>1222</em> is not a number " .</p>
  
  <p>I far as now I have made this:</p>
  
  <pre><code>            string[] lineItems = (string[])List[]
                  if (!Regex.IsMatch(lineItems[0], (@"^\d*$")))
          textBox2.Text += " The number ,lineItems[0], is bigger than 
  10 " + Environment.NewLine;
  </code></pre>
  
  <p>I want to print the array fields that have error. So if it finds something it will print it. </p>
  
  <p>I made a code that correctly prints that there is an error on this line of the array, but I cant print the item of the array.</p>
  
  <p>I need to have an <code>Environment.NewLine</code> because I will print many lines. </p>
  
  <p>Thanks ,
  George. </p>