Import Ascii File to Datagridview

There are several ways of doing this.

Check out this article for one way:

http://www.c-sharpcorner.com/UploadFile/ankurmee/import-data-from-text-and-csv-file-to-datagridview-in-net/

Another way would be use the code in this link to load the data into a DataSet:

http://www.java2s.com/Code/CSharp/Database-ADO.net/ReadcommaseparatedvalueintoDataSet.htm

You can then bind the DataTable to your DataGridView with a line such as this:

dataGridView1.DataSource = myDataSet.Tables["TheData"].DefaultView;