How to create a DataTable in C# and how to add rows?

Data table in Asp.net c#

DataTable dt=new DataTable();

Datacolumn Name = new DataColumn("Name",typeoff(string));

dt.Columns.Add(Name);

Datacolumn Age = new DataColumn("Age", typeoff(int));`

dt.Columns.Add(Age);

DataRow dr=dt.NewRow();

dr["Name"]="Kavitha Reddy";

dr["Age"]=24;

dt.add.rows(dr);

dr=dt.NewRow();

dr["Name"]="Kiran Reddy";

dr["Age"]=23;

dt.rows.add(dr);

Gv.DataSource=dt;

Gv.DataBind();