Buffer.GetByte メソッド
アセンブリ: mscorlib (mscorlib.dll 内)

Dim array As Array Dim index As Integer Dim returnValue As Byte returnValue = Buffer.GetByte(array, index)
戻り値
配列内の index にあるバイトを返します。



GetByte メソッドを使用して、配列内の指定した位置のバイト値を表示するコード例を次に示します。
' Example of the Buffer.GetByte method. Imports System Imports Microsoft.VisualBasic Module GetByteDemo Const formatter As String = "{0,10}{1,10}{2,9} {3}" ' Display the array contents in hexadecimal. Sub DisplayArray( arr As Array, name As String ) ' Get the array element width; format the formatting string. Dim loopX As Integer Dim elemWidth As Integer = _ Buffer.ByteLength( arr ) / arr.Length Dim format As String = _ String.Format( " {{0:X{0}}}", 2 * elemWidth ) ' Display the array elements from right to left. Console.Write( "{0,7}:", name ) For loopX = arr.Length - 1 to 0 Step -1 Console.Write( format, arr( loopX ) ) Next loopX Console.WriteLine( ) End Sub Sub ArrayInfo( arr As Array, name As String, index As Integer ) Dim value As Byte = Buffer.GetByte( arr, index ) ' Display the array name, index, and byte to be viewed. Console.WriteLine( formatter, name, index, value, _ String.Format( "&H{0:X2}", value ) ) End Sub Sub Main( ) ' These are the arrays to be viewed with GetByte. Dim longs( ) As Long = _ { 333333333333333333, 666666666666666666, 999999999999999999 } Dim ints( ) As Integer = _ { 111111111, 222222222, 333333333, 444444444, 555555555 } Console.WriteLine( "This example of the " & _ "Buffer.GetByte( Array, Integer ) " & vbCrLf & _ "method generates the following output." & vbCrLf & _ "Note: The arrays are displayed from right to left." ) Console.WriteLine( vbCrLf & " Values of arrays:" & vbCrLf ) ' Display the values of the arrays. DisplayArray( longs, "longs" ) DisplayArray( ints, "ints" ) Console.WriteLine( ) Console.WriteLine( formatter, "Array", "index", _ "value", "" ) Console.WriteLine( formatter, "-----", "-----", _ "-----", "----" ) ' Display the Length and ByteLength for each array. ArrayInfo( ints, "ints", 0 ) ArrayInfo( ints, "ints", 7 ) ArrayInfo( ints, "ints", 10 ) ArrayInfo( ints, "ints", 17 ) ArrayInfo( longs, "longs", 0 ) ArrayInfo( longs, "longs", 6 ) ArrayInfo( longs, "longs", 10 ) ArrayInfo( longs, "longs", 17 ) ArrayInfo( longs, "longs", 21 ) End Sub End Module ' This example of the Buffer.GetByte( Array, Integer ) ' method generates the following output. ' Note: The arrays are displayed from right to left. ' ' Values of arrays: ' ' longs: 0DE0B6B3A763FFFF 094079CD1A42AAAA 04A03CE68D215555 ' ints: 211D1AE3 1A7DAF1C 13DE4355 0D3ED78E 069F6BC7 ' ' Array index value ' ----- ----- ----- ---- ' ints 0 199 &HC7 ' ints 7 13 &H0D ' ints 10 222 &HDE ' ints 17 26 &H1A ' longs 0 85 &H55 ' longs 6 160 &HA0 ' longs 10 66 &H42 ' longs 17 255 &HFF ' longs 21 182 &HB6
// Example of the Buffer.GetByte method. using System; class GetByteDemo { const string formatter = "{0,10}{1,10}{2,9} {3}"; // Display the array contents in hexadecimal. public static void DisplayArray( Array arr, string name ) { // Get the array element width; format the formatting string. int elemWidth = Buffer.ByteLength( arr ) / arr.Length; string format = String.Format( " {{0:X{0}}}", 2 * elemWidth ); // Display the array elements from right to left. Console.Write( "{0,5}:", name ); for( int loopX = arr.Length - 1; loopX >= 0; loopX-- ) Console.Write( format, arr.GetValue( loopX ) ); Console.WriteLine( ); } public static void ArrayInfo( Array arr, string name, int index ) { byte value = Buffer.GetByte( arr, index ); // Display the array name, index, and byte to be viewed. Console.WriteLine( formatter, name, index, value, String.Format( "0x{0:X2}", value ) ); } public static void Main( ) { // These are the arrays to be viewed with GetByte. long[ ] longs = { 333333333333333333, 666666666666666666, 999999999999999999 }; int[ ] ints = { 111111111, 222222222, 333333333, 444444444, 555555555 }; Console.WriteLine( "This example of the " + "Buffer.GetByte( Array, int ) \n" + "method generates the following output.\n" + "Note: The arrays are displayed from right to left.\n" ); Console.WriteLine( " Values of arrays:\n" ); // Display the values of the arrays. DisplayArray( longs, "longs" ); DisplayArray( ints, "ints" ); Console.WriteLine( ); Console.WriteLine( formatter, "Array", "index", "value", "" ); Console.WriteLine( formatter, "-----", "-----", "-----", "----" ); // Display the Length and ByteLength for each array. ArrayInfo( ints, "ints", 0 ); ArrayInfo( ints, "ints", 7 ); ArrayInfo( ints, "ints", 10 ); ArrayInfo( ints, "ints", 17 ); ArrayInfo( longs, "longs", 0 ); ArrayInfo( longs, "longs", 6 ); ArrayInfo( longs, "longs", 10 ); ArrayInfo( longs, "longs", 17 ); ArrayInfo( longs, "longs", 21 ); } } /* This example of the Buffer.GetByte( Array, int ) method generates the following output. Note: The arrays are displayed from right to left. Values of arrays: longs: 0DE0B6B3A763FFFF 094079CD1A42AAAA 04A03CE68D215555 ints: 211D1AE3 1A7DAF1C 13DE4355 0D3ED78E 069F6BC7 Array index value ----- ----- ----- ---- ints 0 199 0xC7 ints 7 13 0x0D ints 10 222 0xDE ints 17 26 0x1A longs 0 85 0x55 longs 6 160 0xA0 longs 10 66 0x42 longs 17 255 0xFF longs 21 182 0xB6 */
// Example of the Buffer::GetByte method. using namespace System; #define formatter "{0,10}{1,10}{2,9} {3}" // Display the array contents in hexadecimal. void DisplayArray( Array^ arr, String^ name ) { // Get the array element width; format the formatting string. int elemWidth = Buffer::ByteLength( arr ) / arr->Length; String^ format = String::Format( " {{0:X{0}}}", 2 * elemWidth ); // Display the array elements from right to left. Console::Write( "{0,5}:", name ); for ( int loopX = arr->Length - 1; loopX >= 0; loopX-- ) Console::Write( format, arr->GetValue( loopX ) ); Console::WriteLine(); } void ArrayInfo( Array^ arr, String^ name, int index ) { unsigned char value = Buffer::GetByte( arr, index ); // Display the array name, index, and byte to be viewed. Console::WriteLine( formatter, name, index, value, String::Format( "0x{0:X2}", value ) ); } int main() { // These are the arrays to be viewed with GetByte. array<__int64>^longs = {333333333333333333,666666666666666666,999999999999999999}; array<int>^ints = {111111111,222222222,333333333,444444444 ,555555555}; Console::WriteLine( "This example of the " "Buffer::GetByte( Array*, int ) \n" "method generates the following output.\n" "Note: The arrays are displayed from right to left.\n" ); Console::WriteLine( " Values of arrays:\n" ); // Display the values of the arrays. DisplayArray( longs, "longs" ); DisplayArray( ints, "ints" ); Console::WriteLine(); Console::WriteLine( formatter, "Array", "index", "value", "" ); Console::WriteLine( formatter, "-----", "-----", "-----", "----" ); // Display the Length and ByteLength for each array. ArrayInfo( ints, "ints", 0 ); ArrayInfo( ints, "ints", 7 ); ArrayInfo( ints, "ints", 10 ); ArrayInfo( ints, "ints", 17 ); ArrayInfo( longs, "longs", 0 ); ArrayInfo( longs, "longs", 6 ); ArrayInfo( longs, "longs", 10 ); ArrayInfo( longs, "longs", 17 ); ArrayInfo( longs, "longs", 21 ); } /* This example of the Buffer::GetByte( Array*, int ) method generates the following output. Note: The arrays are displayed from right to left. Values of arrays: longs: 0DE0B6B3A763FFFF 094079CD1A42AAAA 04A03CE68D215555 ints: 211D1AE3 1A7DAF1C 13DE4355 0D3ED78E 069F6BC7 Array index value ----- ----- ----- ---- ints 0 199 0xC7 ints 7 13 0x0D ints 10 222 0xDE ints 17 26 0x1A longs 0 85 0x55 longs 6 160 0xA0 longs 10 66 0x42 longs 17 255 0xFF longs 21 182 0xB6 */
// Example of the Buffer.GetByte method. import System.*; class GetByteDemo { private static String formatter = "{0,10}{1,10}{2,9} {3}"; // Display the array contents in hexadecimal. public static void DisplayArray(Array arr, String name) { // Get the array element width; format the formatting string. int elemWidth = Buffer.ByteLength(arr) / arr.get_Length(); String format = String.Format(" {{0:X{0}}}", (Int32)(2 * elemWidth)); // Display the array elements from right to left. Console.Write("{0,5}:", name); for (int loopX = arr.get_Length() - 1; loopX >= 0; loopX--) { Console.Write(format, arr.GetValue(loopX)); } Console.WriteLine(); } //DisplayArray public static void ArrayInfo(Array arr, String name, int index) { ubyte value = Buffer.GetByte(arr, index); // Display the array name, index, and byte to be viewed. Object objArr[] = new Object[] { name, (Int32)index, (UInt16)value, String.Format("0x{0:X2}", (UInt16)value) }; Console.WriteLine(formatter, objArr); } //ArrayInfo public static void main(String[] args) { // These are the arrays to be viewed with GetByte. long longs[] = { 333333333333333333L, 666666666666666666L, 999999999999999999L }; int ints[] = { 111111111, 222222222, 333333333, 444444444, 555555555 }; Console.WriteLine("This example of the Buffer.GetByte( Array, int ) \n" + "method generates the following output.\n" + "Note: The arrays are displayed from right to left.\n"); Console.WriteLine(" Values of arrays:\n"); // Display the values of the arrays. DisplayArray(longs, "longs"); DisplayArray(ints, "ints"); Console.WriteLine(); Object objArr1[] = new Object[] { "Array", "index", "value", ""}; Console.WriteLine(formatter, objArr1); Object objArr2[] = new Object[] { "-----", "-----","-----", "----" }; Console.WriteLine(formatter, objArr2); // Display the Length and ByteLength for each array. ArrayInfo(ints, "ints", 0); ArrayInfo(ints, "ints", 7); ArrayInfo(ints, "ints", 10); ArrayInfo(ints, "ints", 17); ArrayInfo(longs, "longs", 0); ArrayInfo(longs, "longs", 6); ArrayInfo(longs, "longs", 10); ArrayInfo(longs, "longs", 17); ArrayInfo(longs, "longs", 21); } //main } //GetByteDemo /* This example of the Buffer.GetByte( Array, int ) method generates the following output. Note: The arrays are displayed from right to left. Values of arrays: longs: 0DE0B6B3A763FFFF 094079CD1A42AAAA 04A03CE68D215555 ints: 211D1AE3 1A7DAF1C 13DE4355 0D3ED78E 069F6BC7 Array index value ----- ----- ----- ---- ints 0 199 0xC7 ints 7 13 0x0D ints 10 222 0xDE ints 17 26 0x1A longs 0 85 0x55 longs 6 160 0xA0 longs 10 66 0x42 longs 17 255 0xFF longs 21 182 0xB6 */

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