title: Problem with dates using CarlosAg.ExcelXmlWriter
body: <p>I am using the CarlosAg.ExcelXmlWriter library to generate an Excel file in C#.  If I treat all data as strings everything works fine, but I need some cells to be recognized by Excel as date fields.  When I try to set the data type accordingly, the resulting Excel file fails to open in Excel 2003 (or  Excel 2007 for that matter).</p>
  
  <p>In Excel 2003, I get the following error on load:</p>
  
  <blockquote>
    <p>Problems came up in the following area
    during load: Table</p>
  </blockquote>
  
  <p>I am using the following code to generate the DateTime cells that are causing the problem:</p>
  
  <pre><code>string val = DateTime.Now.ToString("MM/dd/yyyy");     
  row.Cells.Add(new WorksheetCell(val, DataType.DateTime));
  </code></pre>
  
  <p>Thanks.</p>