Is it possible to get the table by knowing its name only (string)

Question

public bool IsShowTable
get { return _IsShowTable; }
set { _IsShowTable = value;
if (_IsShowTable)
//Type type = Type.GetType(GraphSelected);
//Object o = (Activator.CreateInstance(type));
using (var ctx = new PD5500DBEntities())
DataGridSrc = new ObservableCollection<object>(ctx.G2_2_6_0dot01_0dot0); //Using here the TableName in String
NotifyPropertyChanged();
private ObservableCollection<Object> _DataGridSrc;
public ObservableCollection<Object> DataGridSrc
get { return _DataGridSrc; }
set { _DataGridSrc = value;
NotifyPropertyChanged();
In the code I used ctx.TableName, would it be possible to get a reference by knowing the string of the TableName only. 
I mean
TableName = "MyTable";//Type type = Type.GetType("TableName");
//Object o = (Activator.CreateInstance(type));

Answer 1

Thanks Magnus.
But now I have difficulty setting it to datagrid source 
//public ObservableCollection<Object> DataGridSrc
// get { return _DataGridSrc; }
// set
// _DataGridSrc = value;
// NotifyPropertyChanged();
or
private ICollectionView _DataGridSrc;
public ICollectionView DataGridSrc
get { return _DataGridSrc; }
set
_DataGridSrc = value;
NotifyPropertyChanged();
using (var ctx = new PD5500DBEntities())
Type type = Type.GetType("PressureVessels.Database.G2_2_6_0dot01_0dot0");
var entities = ctx.Set(type);
DataGridSrc = (ICollectionView)entities.Local;
//or
//DataGridSrc = new ObservableCollection<object>(entities.Local);
Before when I was using 
DataGridSrc = new ObservableCollection<object>(ctx.G2_2_6_0dot01_0dot0);
it worked but now it doesn't. Though now by using the namespace.name I get the type but still cannot assign it to datagridSr which is ObservableCollection or ICollectionView.