BitConverter.ToInt64 メソッド
アセンブリ: mscorlib (mscorlib.dll 内)

Dim value As Byte() Dim startIndex As Integer Dim returnValue As Long returnValue = BitConverter.ToInt64(value, startIndex)
戻り値
startIndex から始まる 8 バイトで構成される 64 ビット符号付き整数。


ToInt64 メソッドを使用して、Byte 配列の要素を Int64 値に変換するコード例を次に示します。
' Example of the BitConverter.ToInt64 method. Imports System Imports Microsoft.VisualBasic Module BytesToInt64Demo Const formatter As String = "{0,5}{1,27}{2,24}" ' Convert eight Byte array elements to a Long and display it. Sub BAToInt64( bytes( ) As Byte, index As Integer ) Dim value As Long = BitConverter.ToInt64( bytes, index ) Console.WriteLine( formatter, index, _ BitConverter.ToString( bytes, index, 8 ), value ) End Sub ' Display a Byte array, using multiple lines if necessary. Sub WriteMultiLineByteArray( bytes( ) As Byte ) Const rowSize As Integer = 20 Dim iter As Integer Console.WriteLine( "initial Byte array" ) Console.WriteLine( "------------------" ) For iter = 0 To bytes.Length - rowSize - 1 Step rowSize Console.Write( _ BitConverter.ToString( bytes, iter, rowSize ) ) Console.WriteLine( "-" ) Next iter Console.WriteLine( BitConverter.ToString( bytes, iter ) ) Console.WriteLine( ) End Sub Sub Main( ) Dim byteArray as Byte( ) = { _ 0, 54, 101, 196, 255, 255, 255, 255, 0, 0, _ 0, 0, 0, 0, 0, 0, 128, 0, 202, 154, _ 59, 0, 0, 0, 0, 1, 0, 0, 0, 0, _ 255, 255, 255, 255, 1, 0, 0, 255, 255, 255, _ 255, 255, 255, 255, 127, 86, 85, 85, 85, 85, _ 85, 255, 255, 170, 170, 170, 170, 170, 170, 0, _ 0, 100, 167, 179, 182, 224, 13, 0, 0, 156, _ 88, 76, 73, 31, 242 } Console.WriteLine( _ "This example of the BitConverter.ToInt64( Byte( ), " & _ "Integer ) " & vbCrLf & "method generates the " & _ "following output. It converts elements " & vbCrLf & _ "of a Byte array to Long values." & vbCrLf ) WriteMultiLineByteArray( byteArray ) Console.WriteLine( formatter, "index", "array elements", _ "Long" ) Console.WriteLine( formatter, "-----", "--------------", _ "----" ) ' Convert Byte array elements to Long values. BAToInt64( byteArray, 8 ) BAToInt64( byteArray, 5 ) BAToInt64( byteArray, 34 ) BAToInt64( byteArray, 17 ) BAToInt64( byteArray, 0 ) BAToInt64( byteArray, 21 ) BAToInt64( byteArray, 26 ) BAToInt64( byteArray, 53 ) BAToInt64( byteArray, 45 ) BAToInt64( byteArray, 59 ) BAToInt64( byteArray, 67 ) BAToInt64( byteArray, 37 ) BAToInt64( byteArray, 9 ) End Sub End Module ' This example of the BitConverter.ToInt64( Byte( ), Integer ) ' method generates the following output. It converts elements ' of a Byte array to Long values. ' ' initial Byte array ' ------------------ ' 00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A- ' 3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF- ' FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00- ' 00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2 ' ' index array elements Long ' ----- -------------- ---- ' 8 00-00-00-00-00-00-00-00 0 ' 5 FF-FF-FF-00-00-00-00-00 16777215 ' 34 01-00-00-FF-FF-FF-FF-FF -16777215 ' 17 00-CA-9A-3B-00-00-00-00 1000000000 ' 0 00-36-65-C4-FF-FF-FF-FF -1000000000 ' 21 00-00-00-00-01-00-00-00 4294967296 ' 26 00-00-00-00-FF-FF-FF-FF -4294967296 ' 53 AA-AA-AA-AA-AA-AA-00-00 187649984473770 ' 45 56-55-55-55-55-55-FF-FF -187649984473770 ' 59 00-00-64-A7-B3-B6-E0-0D 1000000000000000000 ' 67 00-00-9C-58-4C-49-1F-F2 -1000000000000000000 ' 37 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807 ' 9 00-00-00-00-00-00-00-80 -9223372036854775808
// Example of the BitConverter.ToInt64 method. using System; class BytesToInt64Demo { const string formatter = "{0,5}{1 ,27}{2,24}"; // Convert eight byte array elements to a long and display it. public static void BAToInt64( byte[ ] bytes, int index ) { long value = BitConverter.ToInt64( bytes, index ); Console.WriteLine( formatter, index, BitConverter.ToString( bytes, index, 8 ), value ); } // Display a byte array, using multiple lines if necessary. public static void WriteMultiLineByteArray( byte[ ] bytes ) { const int rowSize = 20; int iter; Console.WriteLine( "initial byte array" ); Console.WriteLine( "------------------" ); for( iter = 0; iter < bytes.Length - rowSize; iter += rowSize ) { Console.Write( BitConverter.ToString( bytes, iter, rowSize ) ); Console.WriteLine( "-" ); } Console.WriteLine( BitConverter.ToString( bytes, iter ) ); Console.WriteLine( ); } public static void Main( ) { byte[ ] byteArray = { 0, 54, 101, 196, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 202, 154, 59, 0, 0, 0, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255, 1, 0, 0, 255, 255, 255, 255, 255, 255, 255, 127, 86, 85, 85, 85, 85, 85, 255, 255, 170, 170, 170, 170, 170, 170, 0, 0, 100, 167, 179, 182, 224, 13, 0, 0, 156, 88, 76, 73, 31, 242 }; Console.WriteLine( "This example of the BitConverter.ToInt64( byte[ ], " + "int ) \nmethod generates the following output. It " + "converts elements \nof a byte array to long values.\r\n" ); WriteMultiLineByteArray( byteArray ); Console.WriteLine( formatter, "index", "array elements", "long" ); Console.WriteLine( formatter, "-----", "--------------", "----" ); // Convert byte array elements to long values. BAToInt64( byteArray, 8 ); BAToInt64( byteArray, 5 ); BAToInt64( byteArray, 34 ); BAToInt64( byteArray, 17 ); BAToInt64( byteArray, 0 ); BAToInt64( byteArray, 21 ); BAToInt64( byteArray, 26 ); BAToInt64( byteArray, 53 ); BAToInt64( byteArray, 45 ); BAToInt64( byteArray, 59 ); BAToInt64( byteArray, 67 ); BAToInt64( byteArray, 37 ); BAToInt64( byteArray, 9 ); } } /* This example of the BitConverter.ToInt64( byte[ ], int ) method generates the following output. It converts elements of a byte array to long values. initial byte array ------------------ 00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A- 3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF- FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00- 00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2 index array elements long ----- -------------- ---- 8 00-00-00-00-00-00-00-00 0 5 FF-FF-FF-00-00-00-00-00 16777215 34 01-00-00-FF-FF-FF-FF-FF -16777215 17 00-CA-9A-3B-00-00-00-00 1000000000 0 00-36-65-C4-FF-FF-FF-FF -1000000000 21 00-00-00-00-01-00-00-00 4294967296 26 00-00-00-00-FF-FF-FF-FF -4294967296 53 AA-AA-AA-AA-AA-AA-00-00 187649984473770 45 56-55-55-55-55-55-FF-FF -187649984473770 59 00-00-64-A7-B3-B6-E0-0D 1000000000000000000 67 00-00-9C-58-4C-49-1F-F2 -1000000000000000000 37 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807 9 00-00-00-00-00-00-00-80 -9223372036854775808 */
// Example of the BitConverter::ToInt64 method. using namespace System; // Convert eight byte array elements to an __int64 and display it. void BAToInt64( array<unsigned char>^bytes, int index ) { __int64 value = BitConverter::ToInt64( bytes, index ); Console::WriteLine( "{0,5}{1,27}{2,24}", index, BitConverter::ToString( bytes, index, 8 ), value ); } // Display a byte array, using multiple lines if necessary. void WriteMultiLineByteArray( array<unsigned char>^bytes ) { const int rowSize = 20; int iter; Console::WriteLine( "initial unsigned char array" ); Console::WriteLine( "---------------------------" ); for ( iter = 0; iter < bytes->Length - rowSize; iter += rowSize ) { Console::Write( BitConverter::ToString( bytes, iter, rowSize ) ); Console::WriteLine( "-" ); } Console::WriteLine( BitConverter::ToString( bytes, iter ) ); Console::WriteLine(); } int main() { array<unsigned char>^byteArray = {0,54,101,196,255,255 ,255,255,0,0,0,0,0,0,0,0,128,0,202,154,59,0,0,0,0,1,0,0,0,0,255,255,255,255,1,0 ,0,255,255,255,255,255,255,255,127,86,85,85,85,85,85,255,255,170,170,170,170,170,170,0,0,100,167,179,182,224,13,0,0,156,88,76,73,31,242}; Console::WriteLine( "This example of the BitConverter::ToInt64( unsigned " "char[ ], int ) \nmethod generates the following output. It " "converts elements of a \nbyte array to __int64 values.\n" ); WriteMultiLineByteArray( byteArray ); Console::WriteLine( "{0,5}{1,27}{2,24}", "index", "array elements", "__int64" ); Console::WriteLine( "{0,5}{1,27}{2,24}", "-----", "--------------", "-------" ); // Convert byte array elements to __int64 values. BAToInt64( byteArray, 8 ); BAToInt64( byteArray, 5 ); BAToInt64( byteArray, 34 ); BAToInt64( byteArray, 17 ); BAToInt64( byteArray, 0 ); BAToInt64( byteArray, 21 ); BAToInt64( byteArray, 26 ); BAToInt64( byteArray, 53 ); BAToInt64( byteArray, 45 ); BAToInt64( byteArray, 59 ); BAToInt64( byteArray, 67 ); BAToInt64( byteArray, 37 ); BAToInt64( byteArray, 9 ); } /* This example of the BitConverter::ToInt64( unsigned char[ ], int ) method generates the following output. It converts elements of a byte array to __int64 values. initial unsigned char array --------------------------- 00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A- 3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF- FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00- 00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2 index array elements __int64 ----- -------------- ------- 8 00-00-00-00-00-00-00-00 0 5 FF-FF-FF-00-00-00-00-00 16777215 34 01-00-00-FF-FF-FF-FF-FF -16777215 17 00-CA-9A-3B-00-00-00-00 1000000000 0 00-36-65-C4-FF-FF-FF-FF -1000000000 21 00-00-00-00-01-00-00-00 4294967296 26 00-00-00-00-FF-FF-FF-FF -4294967296 53 AA-AA-AA-AA-AA-AA-00-00 187649984473770 45 56-55-55-55-55-55-FF-FF -187649984473770 59 00-00-64-A7-B3-B6-E0-0D 1000000000000000000 67 00-00-9C-58-4C-49-1F-F2 -1000000000000000000 37 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807 9 00-00-00-00-00-00-00-80 -9223372036854775808 */
// Example of the BitConverter.ToInt64 method. import System.*; class BytesToInt64Demo { private static String formatter = "{0 ,5}{1,27}{2,24}"; // Convert eight byte array elements to a long and display it. public static void BAToInt64(ubyte bytes[], int index) { long value = BitConverter.ToInt64(bytes, index); Console.WriteLine(formatter, (Int32)index, BitConverter.ToString(bytes, index, 8), (Int64)value); } //BAToInt64 // Display a byte array, using multiple lines if necessary. public static void WriteMultiLineByteArray(ubyte bytes[]) { final int rowSize = 20; int iter; Console.WriteLine("initial byte array"); Console.WriteLine("------------------"); for (iter = 0; iter < bytes.length - rowSize; iter+=rowSize) { Console.Write(BitConverter.ToString(bytes, iter, rowSize)); Console.WriteLine("-"); } Console.WriteLine(BitConverter.ToString(bytes, iter)); Console.WriteLine(); } //WriteMultiLineByteArray public static void main(String[] args) { ubyte byteArray[] = { 0, 54, 101, 196, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 202, 154, 59, 0, 0, 0, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255, 1, 0, 0, 255, 255, 255, 255, 255, 255, 255, 127, 86, 85, 85, 85, 85, 85, 255, 255, 170, 170, 170, 170, 170, 170, 0, 0, 100, 167, 179, 182, 224, 13, 0, 0, 156, 88, 76, 73, 31, 242 }; Console.WriteLine("This example of the " + "BitConverter.ToInt64( byte[ ], int ) \n" + "method generates the following output. " + "It converts elements \nof a byte array to long values.\r\n"); WriteMultiLineByteArray(byteArray); Console.WriteLine(formatter, "index", "array elements", "long"); Console.WriteLine(formatter, "-----", "--------------", "----"); // Convert byte array elements to long values. BAToInt64(byteArray, 8); BAToInt64(byteArray, 5); BAToInt64(byteArray, 34); BAToInt64(byteArray, 17); BAToInt64(byteArray, 0); BAToInt64(byteArray, 21); BAToInt64(byteArray, 26); BAToInt64(byteArray, 53); BAToInt64(byteArray, 45); BAToInt64(byteArray, 59); BAToInt64(byteArray, 67); BAToInt64(byteArray, 37); BAToInt64(byteArray, 9); } //main } //BytesToInt64Demo /* This example of the BitConverter.ToInt64( byte[ ], int ) method generates the following output. It converts elements of a byte array to long values. initial byte array ------------------ 00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A- 3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF- FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00- 00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2 index array elements long ----- -------------- ---- 8 00-00-00-00-00-00-00-00 0 5 FF-FF-FF-00-00-00-00-00 16777215 34 01-00-00-FF-FF-FF-FF-FF -16777215 17 00-CA-9A-3B-00-00-00-00 1000000000 0 00-36-65-C4-FF-FF-FF-FF -1000000000 21 00-00-00-00-01-00-00-00 4294967296 26 00-00-00-00-FF-FF-FF-FF -4294967296 53 AA-AA-AA-AA-AA-AA-00-00 187649984473770 45 56-55-55-55-55-55-FF-FF -187649984473770 59 00-00-64-A7-B3-B6-E0-0D 1000000000000000000 67 00-00-9C-58-4C-49-1F-F2 -1000000000000000000 37 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807 9 00-00-00-00-00-00-00-80 -9223372036854775808 */

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