public Form1()
if (d3dDevice == null) return;
private Device d3dDevice; private Direct3D d3d; slimdx runtime .net 4.0 x64
| Problem | Likely fix | |---------|-------------| | “SlimDX.dll not found” even after install | Copy SlimDX.dll from %ProgramFiles%\SlimDX to the app’s executable folder. | | Entry point missing errors | You mixed x64 runtime with an x86 app (or vice versa). | | Installer fails with 0x80070643 | Missing VC++ 2010 Redistributable (x64) – download from Microsoft. | | App crashes on Windows 11 22H2+ | Try Windows 8 compatibility mode + disable fullscreen optimizations. | public Form1() if (d3dDevice == null) return; private