所以我找到了一些例子,但没有一个完全符合我的要求(虽然很接近)
我正在寻找的示例
byte[] array = { 0x02, 0x64, 0x40, 0x40, 0x03 };
string text = SomeMagicalMethod(array);
//displays <STX>FOO<ETX>
有一次,我有一本字典,其中包含不可打印的字符值和 <...> 东西,但是将这两个字符串组合起来让我头疼。我目前有这个,但它 ASCIIEncoding 取出所有控制字符。
public static void Add(this TextBox tb, byte[] array)
{
string input = System.Text.ASCIIEncoding.ASCII.GetString(array);
Regex.Replace( input ,
@"\p{Cc}" ,
a => string.Format( "[{0:X2}]" , (byte)a.Value[0] )
) ;
Add(tb, input);
}
public static void Add(this TextBox tb, string text)
{
text += ENTER;
tb.Dispatcher.Invoke( DispatcherPriority.Background,
new Action(delegate() { tb.Text += text; })
);
}
编辑 使用 NUnit 我针对这些测试运行了已回答的代码。最后一个有一个超出 0x7F 范围的值。尽管将要使用的代码不应该有这个,但最好是安全而不是抱歉。
[TestFixture]
public class StringExtensionsTest
{
[Test]
public void SingleByteControlCharacterTest()
{
AssertSingleByte(0x00, "<NUL>"); AssertSingleByte(0x01, "<SOH>");
AssertSingleByte(0x02, "<STX>"); AssertSingleByte(0x03, "<ETX>");
AssertSingleByte(0x04, "<EOT>"); AssertSingleByte(0x05, "<ENQ>");
AssertSingleByte(0x06, "<ACK>"); AssertSingleByte(0x07, "<BEL>");
AssertSingleByte(0x08, "<BS>" ); AssertSingleByte(0x09, "<HT>" );
AssertSingleByte(0x0A, "<LF>" ); AssertSingleByte(0x0B, "<VT>" );
AssertSingleByte(0x0C, "<FF>" ); AssertSingleByte(0x0D, "<CR>" );
AssertSingleByte(0x0E, "<SO>" ); AssertSingleByte(0x0F, "<SI>" );
AssertSingleByte(0x10, "<DLE>"); AssertSingleByte(0x11, "<DC1>");
AssertSingleByte(0x12, "<DC2>"); AssertSingleByte(0x13, "<DC3>");
AssertSingleByte(0x14, "<DC4>"); AssertSingleByte(0x15, "<NAK>");
AssertSingleByte(0x16, "<SYN>"); AssertSingleByte(0x17, "<ETB>");
AssertSingleByte(0x18, "<CAN>"); AssertSingleByte(0x19, "<EM>" );
AssertSingleByte(0x1A, "<SUB>"); AssertSingleByte(0x1B, "<ESC>");
AssertSingleByte(0x1C, "<FS>" ); AssertSingleByte(0x1D, "<GS>" );
AssertSingleByte(0x1E, "<RS>" ); AssertSingleByte(0x1F, "<US>" );
AssertSingleByte(0x7F, "<DEL>");
}
private void AssertSingleByte(byte value, string expected)
{
byte[] array = new byte[]{value};
var actual = array.asciiOctets2String();
Assert.AreEqual(expected, actual, "Didn't print the epxected result");
}
[Test]
public void SingleCharacterTest()
{
for (byte i = 0x20; i < 0x7F; i++)
{
AssertSingleByte(i, char.ToString((char)i));
}
}
[Test]
public void SimpleTestTogether()
{
byte[] array = {0x02, 0x46,0x4F, 0x4F, 0x03};
string expected = "<STX>FOO<ETX>";
string actual = array.asciiOctets2String();
Assert.AreEqual(expected, actual, "Simple test failed");
}
[Test]
public void BigTest()
{
byte[] array = {
0x00, 0x7F, 0x03, 0x52, 0x00, 0x00, 0x2F, 0x5F, 0x20, 0x0F, 0x43, 0x41, 0x52, 0x44, 0x48, 0x4F,
0x4C, 0x44, 0x45, 0x52, 0x2F, 0x56, 0x49, 0x53, 0x41, 0x9F, 0x1F, 0x07, 0x30, 0x30, 0x30, 0x30,
0x30, 0x30, 0x30};
string expected = "<NUL><DEL><ETX>R<NUL><NUL>/_ <SI>CARDHOLDER/VISA?<US><BEL>0000000";
string actual = array.asciiOctets2String();
Assert.AreEqual(expected, actual, "BigTest Failed");
}
}