Filtering Rows in DataGrid

Question

Hi,

 

I want to implement advanced search functionality in my application. I have the following scenario:

I have a ComboBox to select Product Category, TextBox to enter Product Name and two TextBoxes to enter price range.  I want to filter rows in the DataGrid based on values entered by user.  The problem is I have to enter all the three values to filter the DataGird i.e. I have to Select Category,  enter Product Name and enter price range as well. If I select Product Category and enter Product Name and click on search button, the DataGrid deos not display any record.

 

Kindly help me out in this regard.

 

Thank you.