/// <summary>
/// Gets a device's registry property. Helper class that
/// encapsulates the core functionality of the other get
/// registry property functions.
/// </summary>
/// <param name="devInfoSet">The dev info set.</param>
/// <param name="devInfoData">The dev info data.</param>
/// <param name="propertyIndex">Index of the property.</param>
/// <returns>The property buffer.</returns>
private static StringBuilder GetProperty(
IntPtr devInfoSet,
SP_DEVINFO_DATA devInfoData,
SPDRP propertyIndex)
{
Int32 requiredSize = 0;
Int32 propertyRegDataType = 0;
StringBuilder propertyBuffer;
Win32SetupApi.SetupDiGetDeviceRegistryProperty(
devInfoSet,
ref devInfoData,
(int)propertyIndex,
ref propertyRegDataType,
null,
0,
ref requiredSize);
propertyBuffer = new StringBuilder(requiredSize);
propertyRegDataType = 0;
Win32SetupApi.SetupDiGetDeviceRegistryProperty(
devInfoSet,
ref devInfoData,
(int)propertyIndex,
ref propertyRegDataType,
propertyBuffer,
propertyBuffer.Capacity,
ref requiredSize);
return(propertyBuffer);
}
