StringBuilder.Replace 方法
定义
重要
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将此实例中出现的所有指定字符或字符串替换为其他的指定字符或字符串。
重载
Replace(Char, Char) |
将此实例中出现的所有指定字符替换为其他指定字符。 |
Replace(ReadOnlySpan<Char>, ReadOnlySpan<Char>) | |
Replace(String, String) |
将此实例中出现的所有指定字符串的替换为其他指定字符串。 |
Replace(Char, Char, Int32, Int32) |
将此实例的子字符串中出现的所有指定字符替换为其他指定字符。 |
Replace(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Int32, Int32) | |
Replace(String, String, Int32, Int32) |
将此实例的子字符串中出现的所有指定字符串替换为其他指定字符串。 |
示例
下面的示例演示 Replace 方法。
using namespace System;
using namespace System::Text;
void Show( StringBuilder^ sbs )
{
String^ rule1 = "0----+----1----+----2----+----3----+----4---";
String^ rule2 = "01234567890123456789012345678901234567890123";
Console::WriteLine( rule1 );
Console::WriteLine( rule2 );
Console::WriteLine( "{0}", sbs );
Console::WriteLine();
}
int main()
{
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
String^ str = "The quick br!wn d#g jumps #ver the lazy cat.";
StringBuilder^ sb = gcnew StringBuilder( str );
Console::WriteLine();
Console::WriteLine( "StringBuilder.Replace method" );
Console::WriteLine();
Console::WriteLine( "Original value:" );
Show( sb );
sb->Replace( '#', '!', 15, 29 ); // Some '#' -> '!'
Show( sb );
sb->Replace( '!', 'o' ); // All '!' -> 'o'
Show( sb );
sb->Replace( "cat", "dog" ); // All "cat" -> "dog"
Show( sb );
sb->Replace( "dog", "fox", 15, 20 ); // Some "dog" -> "fox"
Console::WriteLine( "Final value:" );
Show( sb );
}
/*
This example produces the following results:
StringBuilder.Replace method
Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.
Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.
*/
using System;
using System.Text;
class Sample
{
public static void Main()
{
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
string str = "The quick br!wn d#g jumps #ver the lazy cat.";
StringBuilder sb = new StringBuilder(str);
Console.WriteLine();
Console.WriteLine("StringBuilder.Replace method");
Console.WriteLine();
Console.WriteLine("Original value:");
Show(sb);
sb.Replace('#', '!', 15, 29); // Some '#' -> '!'
Show(sb);
sb.Replace('!', 'o'); // All '!' -> 'o'
Show(sb);
sb.Replace("cat", "dog"); // All "cat" -> "dog"
Show(sb);
sb.Replace("dog", "fox", 15, 20); // Some "dog" -> "fox"
Console.WriteLine("Final value:");
Show(sb);
}
public static void Show(StringBuilder sbs)
{
string rule1 = "0----+----1----+----2----+----3----+----4---";
string rule2 = "01234567890123456789012345678901234567890123";
Console.WriteLine(rule1);
Console.WriteLine(rule2);
Console.WriteLine("{0}", sbs.ToString());
Console.WriteLine();
}
}
/*
This example produces the following results:
StringBuilder.Replace method
Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.
Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.
*/
open System.Text
let show (sbs: StringBuilder) =
let rule1 = "0----+----1----+----2----+----3----+----4---"
let rule2 = "01234567890123456789012345678901234567890123"
printfn $"{rule1}\n{rule2}\n{sbs}\n"
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
let str = "The quick br!wn d#g jumps #ver the lazy cat."
let sb = StringBuilder str
printfn "StringBuilder.Replace method\n"
printfn "Original value:"
show sb
sb.Replace('#', '!', 15, 29) |> ignore // Some '#' -> '!'
show sb
sb.Replace('!', 'o') |> ignore // All '!' -> 'o'
show sb
sb.Replace("cat", "dog") |> ignore // All "cat" -> "dog"
show sb
sb.Replace("dog", "fox", 15, 20) |> ignore // Some "dog" -> "fox"
printfn "Final value:"
show sb
// This example produces the following results:
// StringBuilder.Replace method
//
// Original value:
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
// The quick br!wn d#g jumps #ver the lazy cat.
//
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
// The quick br!wn d!g jumps !ver the lazy cat.
//
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
// The quick brown dog jumps over the lazy cat.
//
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
// The quick brown dog jumps over the lazy dog.
//
// Final value:
// 0----+----1----+----2----+----3----+----4---
// 01234567890123456789012345678901234567890123
// The quick brown fox jumps over the lazy dog.
Imports System.Text
Class Sample
Public Shared Sub Main()
' 0----+----1----+----2----+----3----+----4---
' 01234567890123456789012345678901234567890123
Dim str As String = "The quick br!wn d#g jumps #ver the lazy cat."
Dim sb As New StringBuilder(str)
Console.WriteLine()
Console.WriteLine("StringBuilder.Replace method")
Console.WriteLine()
Console.WriteLine("Original value:")
Show(sb)
sb.Replace("#"c, "!"c, 15, 29) ' Some '#' -> '!'
Show(sb)
sb.Replace("!"c, "o"c) ' All '!' -> 'o'
Show(sb)
sb.Replace("cat", "dog") ' All "cat" -> "dog"
Show(sb)
sb.Replace("dog", "fox", 15, 20) ' Some "dog" -> "fox"
Console.WriteLine("Final value:")
Show(sb)
End Sub
Public Shared Sub Show(sbs As StringBuilder)
Dim rule1 As String = "0----+----1----+----2----+----3----+----4---"
Dim rule2 As String = "01234567890123456789012345678901234567890123"
Console.WriteLine(rule1)
Console.WriteLine(rule2)
Console.WriteLine("{0}", sbs.ToString())
Console.WriteLine()
End Sub
End Class
'
'This example produces the following results:
'
'StringBuilder.Replace method
'
'Original value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d#g jumps #ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d!g jumps !ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy dog.
'
'Final value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown fox jumps over the lazy dog.
'
Replace(Char, Char)
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
将此实例中出现的所有指定字符替换为其他指定字符。
public:
System::Text::StringBuilder ^ Replace(char oldChar, char newChar);
public System.Text.StringBuilder Replace (char oldChar, char newChar);
member this.Replace : char * char -> System.Text.StringBuilder
Public Function Replace (oldChar As Char, newChar As Char) As StringBuilder
参数
- oldChar
- Char
要替换的字符。
- newChar
- Char
替换 oldChar
的字符。
返回
对此实例的引用,其中 oldChar
被 newChar
替换。
注解
此方法执行按序号区分大小写的比较,以识别 当前实例中的 匹配项 oldChar
。 替换后,当前 StringBuilder 实例的大小保持不变。
适用于
Replace(ReadOnlySpan<Char>, ReadOnlySpan<Char>)
- Source:
- StringBuilder.cs
public:
System::Text::StringBuilder ^ Replace(ReadOnlySpan<char> oldValue, ReadOnlySpan<char> newValue);
public System.Text.StringBuilder Replace (ReadOnlySpan<char> oldValue, ReadOnlySpan<char> newValue);
member this.Replace : ReadOnlySpan<char> * ReadOnlySpan<char> -> System.Text.StringBuilder
Public Function Replace (oldValue As ReadOnlySpan(Of Char), newValue As ReadOnlySpan(Of Char)) As StringBuilder
参数
- oldValue
- ReadOnlySpan<Char>
- newValue
- ReadOnlySpan<Char>
返回
适用于
Replace(String, String)
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
将此实例中出现的所有指定字符串的替换为其他指定字符串。
public:
System::Text::StringBuilder ^ Replace(System::String ^ oldValue, System::String ^ newValue);
public System.Text.StringBuilder Replace (string oldValue, string newValue);
public System.Text.StringBuilder Replace (string oldValue, string? newValue);
member this.Replace : string * string -> System.Text.StringBuilder
Public Function Replace (oldValue As String, newValue As String) As StringBuilder
参数
- oldValue
- String
要替换的字符串。
- newValue
- String
替换 oldValue
的字符串或 null
。
返回
对此实例的引用,其中 oldValue
的所有实例被 newValue
替换。
例外
oldValue
为 null
。
oldValue
的长度为零。
增大此实例的值将超过 MaxCapacity。
注解
此方法执行按序号区分大小写的比较,以识别 当前实例中的 匹配项 oldValue
。 如果 newValue
为 null
或 String.Empty,则删除 的所有 oldValue
匹配项。
另请参阅
适用于
Replace(Char, Char, Int32, Int32)
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
将此实例的子字符串中出现的所有指定字符替换为其他指定字符。
public:
System::Text::StringBuilder ^ Replace(char oldChar, char newChar, int startIndex, int count);
public System.Text.StringBuilder Replace (char oldChar, char newChar, int startIndex, int count);
member this.Replace : char * char * int * int -> System.Text.StringBuilder
Public Function Replace (oldChar As Char, newChar As Char, startIndex As Integer, count As Integer) As StringBuilder
参数
- oldChar
- Char
要替换的字符。
- newChar
- Char
替换 oldChar
的字符。
- startIndex
- Int32
此实例中子字符串开始的位置。
- count
- Int32
子字符串的长度。
返回
对此实例的引用,其中从 startIndex
到 startIndex
+ count
-1 范围内的 oldChar
被 newChar
替换。
例外
注解
此方法执行按序号区分大小写的比较,以识别 当前实例中的 匹配项 oldChar
。 替换后,当前 StringBuilder 对象的大小保持不变。
适用于
Replace(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Int32, Int32)
- Source:
- StringBuilder.cs
public:
System::Text::StringBuilder ^ Replace(ReadOnlySpan<char> oldValue, ReadOnlySpan<char> newValue, int startIndex, int count);
public System.Text.StringBuilder Replace (ReadOnlySpan<char> oldValue, ReadOnlySpan<char> newValue, int startIndex, int count);
member this.Replace : ReadOnlySpan<char> * ReadOnlySpan<char> * int * int -> System.Text.StringBuilder
Public Function Replace (oldValue As ReadOnlySpan(Of Char), newValue As ReadOnlySpan(Of Char), startIndex As Integer, count As Integer) As StringBuilder
参数
- oldValue
- ReadOnlySpan<Char>
- newValue
- ReadOnlySpan<Char>
- startIndex
- Int32
- count
- Int32
返回
适用于
Replace(String, String, Int32, Int32)
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
- Source:
- StringBuilder.cs
将此实例的子字符串中出现的所有指定字符串替换为其他指定字符串。
public:
System::Text::StringBuilder ^ Replace(System::String ^ oldValue, System::String ^ newValue, int startIndex, int count);
public System.Text.StringBuilder Replace (string oldValue, string newValue, int startIndex, int count);
public System.Text.StringBuilder Replace (string oldValue, string? newValue, int startIndex, int count);
member this.Replace : string * string * int * int -> System.Text.StringBuilder
Public Function Replace (oldValue As String, newValue As String, startIndex As Integer, count As Integer) As StringBuilder
参数
- oldValue
- String
要替换的字符串。
- newValue
- String
替换 oldValue
的字符串或 null
。
- startIndex
- Int32
此实例中子字符串开始的位置。
- count
- Int32
子字符串的长度。
返回
对此实例的引用,其中从 startIndex
到 startIndex
+ count
- 1 的范围内 oldValue
的所有实例被 newValue
替换。
例外
oldValue
为 null
。
oldValue
的长度为零。
注解
此方法执行按序号区分大小写的比较,以识别 在指定子字符串中出现的 oldValue
次数。 如果 newValue
为 null
或 String.Empty,则删除 的所有 oldValue
匹配项。
另请参阅
适用于
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