How to update a dataset

Question

In my project, there are two textBoxes, txtName and txtPopulation and a Button, btnClick. whenever the user clicks btnClick

Answer 1

DataRow[] dr = dsDetails.Tables[0].Select("Something='"+lblCountryName.Text+"'");
if(dr.Length > 0)
{
 dr[0][0] = "ChangeValue";//Datarow is reference to datatable it will automatically update the datatable values
}
dsDetails.Tables[0].AcceptChanges();