C#实现ASCII和字符串相互转换的代码示例

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Stirng.Empty

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publicvoidMain()

{

doubleradiusValue = 3.92781;

//Calculate the circumference and area of a circle, returning the results to Main().

CalculateCircumferenceAndArea(radiusValue,outdoublecircumferenceResult,outvar areaResult);

System.Console.WriteLine($"Circumference of a circle with a radius of {radiusValue} is {circumferenceResult}.");

System.Console.WriteLine($"Area of a circle with a radius of {radiusValue} is {areaResult}.");

Console.ReadLine();

}

//The calculation worker method.

publicstaticvoidCalculateCircumferenceAndArea(doubleradius,outdoublecircumference,outdoublearea)

{

circumference = 2 * Math.PI * radius;

area = Math.PI * (radius * radius);

}

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//返回与指定代码页名称关联的编码。

//Encoding.GetEncoding(String)

usingSystem;

usingSystem.Text;

publicclassSamplesEncoding {

publicstaticvoidMain() {

// Get a UTF-32 encoding by codepage.

Encoding e1 = Encoding.GetEncoding( 12000 );

// Get a UTF-32 encoding by name.

Encoding e2 = Encoding.GetEncoding("utf-32");

// Check their equality.

Console.WriteLine("e1 equals e2? {0}", e1.Equals( e2 ) );

}

}

/*

This code produces the following output.

e1 equals e2? True

*/

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//GetBytes(Char[])

//在派生类中重写时，将指定字符数组中的所有字符编码为一个字节序列。

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if(textBox1.Text!="")

{

stringchars_StrA ="hello";

stringchars_StrB=string.Empty;

char[] txtChars01 =newchar[10];

char[] txtChars02 =newchar[10];

for(inti=0;i<textBox1.Text.Length;i++)

{

txtChars01[i] =textBox1.Text[i];

}

for(intj= 0; j< chars_StrA.Length; j++)

{

txtChars02[j] = chars_StrA[j];

chars_StrB += txtChars02[j];

}

}

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privatevoidbtn_ToASCII_Click(objectsender, EventArgs e)

{

if(txt_char.Text!=string.Empty)

{

if(Encoding.GetEncoding("unicode").GetBytes(newchar[] { txt_char.Text[0] })[1]==0)

{

txt_ASCII.Text = Encoding.GetEncoding("unicode").GetBytes(txt_char.Text)[0].ToString();

}

else

{

txt_ASCII.Text =string.Empty;

MessageBox.Show("请输入字母！","提示！");

}

}

}

privatevoidbtn_ToChar_Click(objectsender, EventArgs e)

{

if(txt_ASCII2.Text!=string.Empty)

{

intP_int_Num;//定义整型局部变量

if(int.TryParse(txt_ASCII2.Text,outP_int_Num))

{

txt_Char2.Text = ((char)P_int_Num).ToString();

}

else

{

MessageBox.Show("请输入正确ASCII码值","错误");

}

}

}