Uri.IsHexEncoding(String, Int32) 方法

定义

命名空间:

System

程序集:

System.Runtime.dll

Source:

Uri.cs

确定字符串中的一个字符是否为十六进制编码。

public:
 static bool IsHexEncoding(System::String ^ pattern, int index);

public static bool IsHexEncoding (string pattern, int index);

static member IsHexEncoding : string * int -> bool

Public Shared Function IsHexEncoding (pattern As String, index As Integer) As Boolean

参数

pattern

String

要检查的字符串。

index

Int32

检查十六进制编码的 pattern 中的位置。

返回

Boolean

如果 pattern 在指定位置进行了十六进制编码，则该值为 true；否则为 false。

示例

下面的代码示例确定字符是否是十六进制编码的，如果是，则向控制台写入等效字符。

String^ testString = "%75";
int index = 0;
if ( Uri::IsHexEncoding( testString, index ) )
{
   Console::WriteLine( "The character is {0}",
      Uri::HexUnescape( testString, index ) );
}
else
{
   Console::WriteLine( "The character is not hex encoded" );
}

string testString = "%75";
int index = 0;
if (Uri.IsHexEncoding(testString, index))
     Console.WriteLine("The character is {0}", Uri.HexUnescape(testString, ref index));
else
     Console.WriteLine("The character is not hexadecimal encoded");

let testString = "%75"
let mutable index = 0
if Uri.IsHexEncoding(testString, index) then
    printfn $"The character is {Uri.HexUnescape(testString, &index)}"
else
    printfn "The character is not hexadecimal encoded"

Dim testString As String = "%75"
Dim index As Integer = 0
If Uri.IsHexEncoding(testString, index) Then
    Console.WriteLine("The character is {0}", Uri.HexUnescape(testString, index))
Else
    Console.WriteLine("The character is not hexadecimal encoded")
End If

注解

方法 IsHexEncoding 检查字符串中遵循模式“%hexhex”的十六进制编码，其中“hex”是 0 到 9 之间的数字，或来自 A-F (不区分大小写) 的字母。