Mas o menos podrías hacer así:
Código:
SqlCommand myCommand = new SqlCommand("dbo.MyStoredProcedure");
myCommand.CommandType = CommandType.StoredProcedure;
// create SqlConnection
SqlConnection myConnection = new SqlConnection("your connection string
here");
myCommand.Connection = myConnection;
SqlDataAdapter da = new SqlDataAdapter(myCommand);
DataSet data = new DataSet();
da.Fill(data);
foreach(DataRow Row in Data.Tables[0].Rows)
{
txtNombre.Text = Row.cells["Nombre"].value.ToString();
}