Below is a sample code snippet demonstrating how to create DataTable in C# and then add rows to the datatable.
How to Create DataTable and add rows in C#?
DataTable dt = new DataTable();
dt.Columns.Add("Name");
dt.Columns.Add("Code");
DataRow row1 = dt.NewRow();
row1["Name"] = "Abundantcode";
row1["Code"] = "1-1-1";
dt.Rows.Add(row1);