Add a logo into excel header without margins left, right, top. In C# / VSTO addin

I want to write a VSTO add-in that imports a logo into the Excel header. Without a margin left, right, top. The Excel document should later be saved as a PDF document with the logo. (I know how to do that in Word). Can someone help me?

What I have tried:

<pre>
So far I've found the following code:

...
sheet.PageSetup.LeftHeaderImage = "C:\....\logo.pgn";
sheet.PageSetup.LeftHeader = "&G";
...

But how can I display the logo without a page border?