Text.FromBinary

語法

Text.FromBinary(binary as nullable binary, optional encoding as nullable number) as nullable text

關於

使用指定的編碼類型將資料從二進位值解碼為文字值。

• binary：要解碼的二進位資料。
• encoding：（選擇性）用來將二進位檔轉換為文字的編碼。 用來 BinaryEncoding.Type 指定編碼類型。 如果未指定此值，預設值為 BinaryEncoding.Utf8。

範例 1

將文字編碼為二進位，產生可檢視的 Base64 字串，然後將其解碼回文字。

使用方式

let
    originalText = "Testing 1-2-3",

    // Default UTF-8 binary
    binaryData = Text.ToBinary(originalText),

    // Convert binary to viewable Base64 string
    encodedText = Binary.ToText(binaryData, BinaryEncoding.Base64),

    // Decode back to text
    decodedText = Text.FromBinary(binaryData),

    result = [
        OriginalText = originalText,
        BinaryBase64 = encodedText,
        DecodedText = decodedText
    ]
in
    result

Output

[
    OriginalText = "Testing 1-2-3",
    BinaryEncoded = "VGVzdGluZyAxLTItMw==",
    DecodedText = "Testing 1-2-3"
]

範例 2

使用位元組順序標記 （BOM） 將文字編碼為二進位制，產生可檢視的十六進位字串，然後將其解碼回文字。

使用方式

let
    originalText = "Testing 1-2-3",

    // Convert to binary with BOM
    binaryData = Text.ToBinary(originalText, TextEncoding.Utf16, true),

    // Show binary as hex to demonstrate presence of BOM (fffe)
    binaryAsHex = Binary.ToText(binaryData, BinaryEncoding.Hex),

    // Decode back to text
    decodedText = Text.FromBinary(binaryData, TextEncoding.Utf16),

    // Compare original text and decoded text
    isIdentical = originalText = decodedText,

    result = [
        OriginalText = originalText,
        BinaryHex = binaryAsHex,
        DecodedText = decodedText,
        IsIdentical = isIdentical
    ]
in
    result

Output

[
    OriginalText = "Testing 1-2-3", 
    DecodedText = "fffe540065007300740069006e006700200031002d0032002d003300",
    DecodedText = "Testing 1-2-3", 
    IsIdentical = true
]