help.CHM file is not displaying exact contents

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C#

WPF

Hello,

I'm using below code for showing specific topic from help file which is in chm file format.
The problem is I'm using index navigator to show the particular topic in help file, but it's showing correct in the left side panel (Search window-Index tab) but not reflecting to right side window.

Please suggest me correct way to do this.

My Code:

System.Windows.Forms.Help.ShowHelp(null, @"\\help.chm", System.Windows.Forms.HelpNavigator.Index, "10");

Thanks.