Filter dynamically created datagrid in a wpf program using c#

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C#

XAML

WPF

DataGrid

I'm new to WPF. I want to Implement a Dynamic Search Form, this form will show a collection of certain object that I passed it through its constructor as follow

CC_BLL.Customers_Collection CustColl = new CC_BLL.Customers_Collection(true);
HelperFrm CustHelp = new HelperFrm(CustColl);
CustHelp.Show(); 

and I set the columns to be Auto generated upon properties of every passed object.
I style my Column Header to have radio button to set the searchable Column in run-time with setting first column as default column for searching and get that column through the code behind

string SelectedColumn4Search = "ID";
foreach (DataGridColumnHeader dgColHeader in App.FindVisualChildren<DataGridColumnHeader>(dtGrid_SearchableData))
  if ((bool)((RadioButton)dgColHeader.Template.FindName("GridRdButton", dgColHeader)).IsChecked)
    {
      SelectedColumn4Search = dgColHeader.Content.ToString();
      break;
    }

All I hope to do is to search in the selected column by text entered in Search Text box and filter rows to show only rows satisfied search criteria.
Screen Shot of Search Form[^]

What I have tried:

I tried to use ICollectionView as follow
System.ComponentModel.ICollectionView CV_Search = CollectionViewSource.GetDefaultView(dtGrid_SearchableData.ItemsSource);
but when try to filter it needs a StrongType item to filter on its property which It's passed in runtime & I dont know its type