Below code which will add an Identity column in DataTable.
DataTable dt = new DataTable("Information");
DataColumn dcID = new DataColumn("ID", typeof(int));
dcID.AutoIncrement = true;
dcID.AutoIncrementSeed = 1;
dcID.AutoIncrementStep = 1;
// Add identity column to datatable
dt.Columns.Add(dcID);
dt.Columns.Add("FirstName"); // Other columns
dt.Columns.Add("LastName");
dt.Columns.Add("Age"); dt.Columns.Add("Gender");
Adding new row in Datatable
dr["FirstName"] = "Avadhesh";
dr["LastName"] = "Patel";
dr["Age"] = 24;
dr["Gender"] = "Male"; dt.Rows.Add(dr);
The above code will add a new row with the ID = 1.
Anonymous User
18-May-2019Thank You.
Sushant Mishra
23-Jul-2017I am grateful to you, for sharing a post like this.