help having a winforms application open with admin rights

Yes you can perform this by adding a manifest file for your application and embed it to your application while compilation. You can perform following steps for doing this.

1. Create a file having name "<<application name>>.exe.manifest" in the same folder where project file is present.
2. Write below provided lines in it

<?xml version="1.0" encoding="utf-8"?>
<asmv1:assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1"
xmlns:asmv1="urn:schemas-microsoft-com:asm.v1" xmlns:asmv2="urn:schemas-microsoft-com:asm.v2"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <assemblyIdentity version="1.0.0.0" name="ApplicationName"/>
  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
    <security>
      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
        <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
      </requestedPrivileges>
    </security>
  </trustInfo>
</asmv1:assembly>

3. Make sure that in place of Application name, provide your executable name in above XML.

4. Now go to "Project Properties->Configuration Property->Linker->Manifest File".
5. Change "UAC Execution Level" to "requireAdministrator".
6. After this go to "Project Properties->Configuration Property->Manifest Tool->Input and Output".
7. Add yo9ur manifest name in "Additional Manifest Files" text box.
8. Now compile the application and generate executable.
9 Now when you will run this application, it will require admin privileges.

Please find more details for creating and embedding a manifest file at link[^]