How to autofill a website form using c#

What do you mean autofill?
Use the Page_Load to load everything

Hope you heard last pass, it will autofill the textbox which is saved before. It also has autologin options. I want to do something lik that..

One way to do it is use session

Dataset dsLogin = new DataSet();
Session["myLogin"] = dsLogin;
DataTable dt = new DataTable("tblLogin");
DataColumn[] keys = new DataColumn[1];
DataColumn myColumn;
//create userNameColumn
myColumn = new DataColumn();
myColumn.DataType = System.Type.GetType("System.String");
myColumn.ColumnName = "UserName";
dt.Columns.Add(myColumn);

in the next page just call the session myLogin and extract the data from there