RadGridView Export Issue

[Veda]

Hi,
Below is my piece of code

  RadGridView radTextBoxData = new RadGridView();

  radTextBoxData.Items.Add("Name: " + Name);
  radTextBoxData.Items.Add("Address: " + Address);
  radTextBoxData.Items.Add("Country: " + Country);
  radTextBoxData.Items.Add("Contact No: " + ContactNo);

 radTextBoxData.Export(stream, GridViewCsvExportOptions);

After exporting the data i could see 'String' in first column. Please let me know why is this getting appended? how can i remove it.

Regards,
Veda