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This SDK only works with devices released within the past 3 years. We regularly optimize and update the SDK to ensure compatibility and performance. We do not guarantee compatibility or provide technical support for devices older than 3 years.

# NVRChlListStruct

### Structure Definition

C++C#

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    struct NVRChlListStruct
    {
        char chlList[256][64];
    };

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    [StructLayout(LayoutKind.Sequential, Pack = 4)]
    public struct NVRChlListStruct
    {
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public struct ChlListItem
        {
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
            public string guid;
        }
        [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = 20)]
        public ChlListItem[] chlList;
    }

### Function Description

NVR channel list structure.

### Member Description

Member | Type | Remark
--- | --- | ---
chlList | char[256] | List of channel guids.

Error Code