I have a DataSet and I want to convert the DataSet into List
T - type object
How convert my DataSet?
First of all, you're on the right track, but you should be thinking in terms of IEnumerable rather than List. And here is how you would do that:
var myData = ds.Tables[0].AsEnumerable()
.Select(r => new {column1 = r[0].ToString(),
column2 = r[1].ToString()
/*etc*/
});
Never convert an IEnumerable to a List before you absolutely need to.