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Commit cfb5a74

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Struct Snippet Update
1 parent 3232e28 commit cfb5a74

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‎CSharp Code Samples/CodeSamples/Structures/StructSample.cs

Lines changed: 69 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -39,20 +39,87 @@ public FourBytesMakeAnInteger(byte a, byte b, byte c, byte d)
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[FieldOffset(3)]
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public readonly byte D;
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42-
[FieldOffset(0)]
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[FieldOffset(0)]
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public readonly uint UnsignedInteger;
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}
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[StructLayout(LayoutKind.Explicit)]
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public struct FloatAndUint
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{
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[FieldOffset(0)]
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public float FloatValue;
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[FieldOffset(0)]
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public uint UintValue;
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}
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[StructLayout(LayoutKind.Explicit)]
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public struct DoubleAndUlong
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{
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[FieldOffset(0)]
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public double DoubleValue;
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[FieldOffset(0)]
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public ulong UlongValue;
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}
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[Flags]
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internal enum DosFileAttributes : byte
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{
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None = 0,
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ReadOnly = 1,
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Archive = 2,
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Compressed = 4,
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Hidden = 8,
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System = 16,
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Encrypted = 32,
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Indexed = 64,
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Temporary = 128
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}
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[StructLayout(LayoutKind.Explicit)]
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internal struct EnumInStruct
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{
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[FieldOffset(0)]
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public uint FileHeader;
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[FieldOffset(3)]
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public DosFileAttributes Attributes;
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}
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public override void Execute()
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{
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Title("FilesSampleExecute");
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Title("StructSampleExecute");
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Section("Compose bytes into int");
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var makeAnIntFromBytes = new FourBytesMakeAnInteger(0x11, 0x22, 0x33, 0x44);
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Console.WriteLine($"We have four bytes (0x{makeAnIntFromBytes.A:X2}, 0x{makeAnIntFromBytes.B:X2}, 0x{makeAnIntFromBytes.C:X2}, 0x{makeAnIntFromBytes.D:X2}), we composed them into an integer (0x{makeAnIntFromBytes.UnsignedInteger:X8}).");
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var makeBytesFromInt = new FourBytesMakeAnInteger(0xFFEEDDAA);
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Console.WriteLine($"We have an integer (0x{makeBytesFromInt.UnsignedInteger:X8}) we divided into four bytes (0x{makeBytesFromInt.A:X2}, 0x{makeBytesFromInt.B:X2}, 0x{makeBytesFromInt.C:X2}, 0x{makeBytesFromInt.D:X2}).");
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Section("Convert float to uint");
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var floatAndUint = new FloatAndUint();
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floatAndUint.FloatValue = 3.1415926f;
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Console.WriteLine($"We have an float ({floatAndUint.FloatValue}) we can show as uint (in hex) = (0x{floatAndUint.UintValue:X4}).");
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floatAndUint.UintValue = 0x40490fda; //PI in IEEE-754 format
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Console.WriteLine($"We have an uint (in hex) = (0x{floatAndUint.UintValue:X4}) we can show as float = ({floatAndUint.FloatValue}).");
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Section("Convert double to ulong");
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var doubleAndUlong = new DoubleAndUlong();
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doubleAndUlong.DoubleValue = Math.E;
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Console.WriteLine($"We have an float ({doubleAndUlong.DoubleValue}) we can show as uint (in hex) = (0x{doubleAndUlong.UlongValue:X8}).");
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doubleAndUlong.UlongValue = 0x400921fb54442d18; //PI in IEEE-754 format
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Console.WriteLine($"We have an uint (in hex) = (0x{doubleAndUlong.UlongValue:X8}) we can show as float = ({doubleAndUlong.DoubleValue}).");
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Section("Convert float to uint");
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var random = new Random();
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byte attributes = (byte)random.Next(1, 255);
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var enumInStruct = new EnumInStruct();
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enumInStruct.FileHeader = (uint)((attributes << 24) | 0x345678);
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Console.WriteLine($"We have an Fileheader (in hex) = (0x{enumInStruct.FileHeader:X4}), we can extract Attributes = ({enumInStruct.Attributes.ToString("g")}).");
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Finish();
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}
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}

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