Import a CSV file

// create an instance of our text field parser object.
using (Microsoft.VisualBasic.FileIO.TextFieldParser parser = new Microsoft.VisualBasic.FileIO.TextFieldParser(@"c:\temp\testimport.csv"))
{
	// set some properties on the parser object.
	parser.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited;
	parser.SetDelimiters(",");

	// keep reading the file until we get to the end.
	while (!parser.EndOfData)
	{
		// process each row. Read the fields in the current line.
		string[] fields = parser.ReadFields();
		
		// Process fields here
	}

	// accept all our changes to the table.
	tblRV.AcceptChanges();
}

• How to: Read From Comma-Delimited Text Files in Visual Basic
• TextFieldParser Class