Several ways to convert decimal numbers to hexadecimal

In C#, converting decimal numbers to hexadecimal can be achieved in the following ways:

Method 1: Use ToString() method

For decimal numbers of integer types, they can be called directlyToString()Method and pass in the format string"X"or"x"to represent conversion to hexadecimal. For example:

int decimalNumber = 10;
string hexadecimalNumber = ("X"); // Output "A"

Here "X" means uppercase hexadecimal letters. To output lowercase hexadecimal letters, use "x":

string lowercaseHexadecimalNumber = ("x"); // Output "a"

Method 2: Use the() method

If you need to use non-integral values ​​(such aslongorulong) to convert, or if you want to explicitly specify the cardinality of the conversion, you can use()method:

long largeDecimalNumber = .png;
string hexNumber = (largeDecimalNumber, 16); // Output "A"

Method 3: Use the BitConverter class (suitable for integer values)

For integer values, you can also use the BitConverter class to convert the values ​​into a sequence of bytes, and then use () to convert the sequence of bytes to a hexadecimal string. This method is usually used in cases where numeric values ​​need to be represented in a specific byte order (such as network endianness):

int number = 10;
byte[] bytes = (number);
string hexString = (bytes).Replace("-", ""); // Output "0A"

Notice:BitConverterThe local endianness is used by default. If you need to specify a specific byte order, you can adjust the byte order first and then convert it.

The above is a common method for converting decimal numbers to hexadecimal in C#. Choose the right method according to your specific needs.

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