How to Open child Wpf form inside Parent Windows form

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C#

Windows

application

my application is windows app.but in that one form is WPF Form.I want to open this WPF Form in My Windows Parent Form.How to assign this form to MDIparent Form?
my code:

BIzsopEditor.Publish objpub = new BIzsopEditor.Publish(Globalclass.Activedatabase);
objpub.MdiParent = this; //error occurs for this line...how to set this?
objpub.Show();