📅 最后修改于: 2020-10-31 04:16:14 🧑 作者: Mango
此类用于写入和处理字符串数据而不是文件。它是TextWriter类的派生类。由StringWriter类编写的字符串数据存储在StringBuilder中。
此类的目的是操纵字符串并将结果保存到StringBuilder中。
[SerializableAttribute]
[ComVisibleAttribute(true)]
public class StringWriter : TextWriter
| Constructors | Description |
|---|---|
| StringWriter() | It is used to initialize a new instance of the StringWriter class. |
| StringWriter(IFormatProvider) | It is used to initialize a new instance of the StringWriter class with the specified format control. |
| StringWriter(StringBuilder) | It is used to initialize a new instance of the StringWriter class that writes to the specified StringBuilder. |
| StringWriter(StringBuilder,?IFormatProvider) | It is used to initialize a new instance of the StringWriter class that writes to the specified StringBuilder and has the specified format provider. |
| Property | Description |
|---|---|
| Encoding | It is used to get the Encoding in which the output is written. |
| FormatProvider | It is used to get an object that controls formatting. |
| NewLine | It is used to get or set the line terminator string used by the current TextWriter. |
| Methods | Description |
|---|---|
| Close() | It is used to close the current StringWriter and the underlying stream. |
| Dispose() | It is used to release all resources used by the TextWriter object. |
| Equals(Object) | It is used to determine whether the specified object is equal to the current object or not. |
| Finalize() | It allows an object to try to free resources and perform other cleanup operations. |
| GetHashCode() | It is used to serve as the default hash function. |
| GetStringBuilder() | It returns the underlying StringBuilder. |
| ToString() | It returns a string containing the characters written to the current StringWriter. |
| WriteAsync(String) | It is used to write a string to the current string asynchronously. |
| Write(Boolean) | It is used to write the text representation of a Boolean value to the string. |
| Write(String) | It is used to write a string to the current string. |
| WriteLine(String) | It is used to write a string followed by a line terminator to the string or stream. |
| WriteLineAsync(String) | Writes a string followed by a line terminator asynchronously to the current string.(Overrides TextWriter.WriteLineAsync(String).) |
在下面的程序中，我们使用StringWriter类将字符串信息写入StringBuilder类。 StringReader类用于将书面信息读取到StringBuilder。
using System;
using System.IO;
using System.Text;
namespace CSharpProgram
{
class Program
{
static void Main(string[] args)
{
string text = "Hello, Welcome to the javatpoint \n" +
"It is nice site. \n" +
"It provides technical tutorials";
// Creating StringBuilder instance
StringBuilder sb = new StringBuilder();
// Passing StringBuilder instance into StringWriter
StringWriter writer = new StringWriter(sb);
// Writing data using StringWriter
writer.WriteLine(text);
writer.Flush();
// Closing writer connection
writer.Close();
// Creating StringReader instance and passing StringBuilder
StringReader reader = new StringReader(sb.ToString());
// Reading data
while (reader.Peek() > -1)
{
Console.WriteLine(reader.ReadLine());
}
}
}
}
输出：
Hello, Welcome to the javatpoint
It is nice site.
It provides technical tutorials