public static void Initailize3D()
{
RuntimeManager.Bind(ProductCode.EngineOrDesktop);
IAoInitialize iao = new AoInitialize();
iao.Initialize(esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB);
if ((iao.IsExtensionCodeAvailable(esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB, esriLicenseExtensionCode.esriLicenseExtensionCode3DAnalyst) == esriLicenseStatus.esriLicenseAvailable) && (iao.IsExtensionCheckedOut(esriLicenseExtensionCode.esriLicenseExtensionCode3DAnalyst) == true))
{
iao.CheckOutExtension(esriLicenseExtensionCode.esriLicenseExtensionCode3DAnalyst);
}
}
