How to assign the combobox's selected item property to .rdlc text box?

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C#

VS2010

desktop

Hi all.

I have a Form (Form1) in my application which accepts the data to print in the bill.

I have created the .rdlc file to display the bill. In my form(Form1) there is a combo box which asks user to enter the type of copy weather it is Original Copy,Duplicate or Triplicate?

The type of copy selected in the combo box should be displayed in the header of the bill.

I have put the text box in rdlc file but I don't know how to assign the value of the combo box (of Form1) to the text box(of rdlc file).

Please help me.

Thanks in advance.