C 字串到位元組陣列,位元組陣列轉整型

int num = 12345

; 
string num1 = convert.tostring(12345, 16
); 
byte bytes = bitconverter.getbytes(num);//
將int32轉換為位元組陣列
num = bitconverter.toint32(bytes, 0);//
將位元組陣列內容再轉成int32型別

string no = datetime.now.tostring("

yyyymmddhhmmssfff
"); //時間轉字串
console.writeline(no);

private

void button1_click(object
sender, eventargs e)
////
整型到16進製制
//int i25 = 25;
//string i25hex = "";
//i25hex = i25.tostring("x2");
////
浮點數到16進製制
//double d = 3.14157;
//string dhex = "";
////
dhex = d.tostring("x2");
//報錯
//byte dbytes = encoding.default.getbytes(d.tostring());
//for (int i = 0; i < dbytes.length; i++)
// 
//bool b = true;
//string bhex = "";
////
create the file
//binarywriter bw = new binarywriter(new filestream("mydata", filemode.create));
////
bw.write(i25);
//寫入1個25
//// bw.write(d);
//// bw.write(b);
//寫入乙個字串
"ccc");
//reading from the file
binaryreader br = new binaryreader(new filestream("
mydata.pdf
", filemode.open));
//var i25 = br.readint32();
//var d = br.readdouble();
//var b = br.readboolean();
//var a0 =br.readbyte(); 
//讀取乙個位元組(第乙個ff(25)(10進製)37)
//byte bytes = new byte[1000];
//每個值為0
//for (int i = 0; i < bytes.length;i++ )
// br.basestream.seek(6236060, seekorigin.begin);//
定位到第6236060個位元組
var test = br.basestream.length - br.basestream.position;//
總長度-當前位置, 可能是讀取到最後
byte bytes = br.readbytes((int
)test);
while (br.basestream.position 
using (binaryreader br = new
binaryreader(fs))
}//var s1 = br.readstring();
messagebox.show(
"ccc");
string str =system.text.encoding.default.getstring(bytes);
br.close();
}public
void
f1()
,,,", cha, num, doub, str);}}
catch
(endofstreamexception e)
finally
}

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