//把整形 转换成(缩小指定倍数) 带小数点的 字符串.
public string L2A ( long l , int PointW )
{
string str , str1 , str2 , strRet = "";
try
{
str = String.Format ( "{0}" , l );
int len = str.Length;
int n = len - PointW ;
if ( n < 0 )
{
string strZreo = "0." ;
for ( int i = 0 ; i < PointW - len ; i++ )
strZreo += "0";
strRet = string.Format ( "{0}{1}" , strZreo , l );
}
else if ( n == 0 )
{
strRet = string.Format ( "0.{0}" , l );
}
else
{
str1 = str.Substring ( 0 , len - PointW ); //get left part
str2 = str.Substring ( str.Length - PointW , PointW ); //get right part
strRet = string.Format ( "{0}.{1}" , str1 , str2 ); //.Format ( "%s.%s" ,str1 , str2 ) ;
}
}
catch ( Exception e )
{
FrontFlag.CONTROL ctrl = new CONTROL ();
ctrl.MsgBox.Show ( "Err at L2A() function" );
}
int m = strRet.IndexOf ( '.' ); //让人看起来 是精确到分。
if ( m < 0 )
{
strRet += ".00";
}
else
{
if ( m == strRet.Length -1 ) //1234. 的 情况。
strRet += "00";
else if ( m == strRet.Length - 2 ) //1234.5 的 情况。
strRet += "0";
}
return strRet;
}
//用于处理 带小数的字符串 转换成长整形.
//扩大指定的倍数, 如果小数点不足, 会在转换后的字符串后面补零.
public long A2LFix ( string str , int PointW )
{
if ( str.Trim () == String.Empty )
return 0;
long lRet = 0;
try
{
int n = str.IndexOf ( "." ); //是整数,直接扩大倍数.
if ( n < 0 )
{
lRet = Convert.ToInt32 ( str ) ;
for ( int i = 0 ; i < PointW ; i ++ )
lRet *= 10 ;
}
else
{
int len = str.Length ;
int curPW = len - 1 - n ; //目前的小数点位数
string str1 , str2 ;
str1 = str.Substring ( 0 , n ) ; //get left part of pint.
str2 = str.Substring( str.Length - curPW , curPW ) ; //get right part of pint.
str = str1 + str2 ; //combin without point.
lRet = Convert.ToInt32 ( str ) ;
if ( curPW < PointW ) //指定的倍数大于目前的倍数， 扩大差额的部分。
{
for ( int i = 0 ; i < PointW-curPW ; i ++ )
lRet *= 10 ;
}
else if ( curPW > PointW ) //指定的倍数小于目前的倍数， 缩小差额的部分。会丢失部分精度.
{
for ( int i = 0 ; i < curPW-PointW ; i ++ )
lRet /= 10 ;
}
}
}
catch ( Exception e )
{
FrontFlag.CONTROL ctrl = new CONTROL ();
ctrl.MsgBox.Show ( "Err at A2LFix() function" );
}
return lRet ;
}
//把放大处理后的整形（MACRO_PricePoint倍数精度）的钱币数值， 转换成带小数点(.角分厘)的字符串。
public string Price2Str ( long lPrice )
{
int PricePointW = MACRO_PricePoint;
string str , str1 , str2 , strRet = "";
try
{
str = String.Format ( "{0}" , lPrice );
int len = str.Length;
int n = len - PricePointW;
if ( n < 0 )
{
string strZreo = "0.";
for ( int i = 0 ; i < PricePointW - len ; i++ )
strZreo += "0";
strRet = string.Format ( "{0}{1}" , strZreo , lPrice );
}
else if ( n == 0 )
{
strRet = String.Format ( "0.{0}" , lPrice );
}
else
{
str1 = str.Substring ( 0 , len - PricePointW ); //get left
str2 = str.Substring ( str.Length - PricePointW , PricePointW ); //get right
strRet = String.Format ( "{0}.{1}" , str1 , str2 );
}
}
catch ( Exception e )
{
FrontFlag.CONTROL ctrl = new CONTROL ();
ctrl.MsgBox.Show ( "Err at Price2Str() function" );
}
return strRet;
}
//用于处理 带小数的字符串 转换成长整形.
//自动扩大倍数， 直到小数点消失为止， 最终的扩大倍数通过 PointW 返回.
public long A2L ( string str , ref int PointW )
{
if ( str.Trim () == String.Empty )
return 0;
PointW = 0;
long l = 0;
try
{
int n = str.IndexOf ( "." );
if ( n < 0 )
{
l = Convert.ToInt32 ( str );
}
else
{
int len = str.Length;
PointW = len - 1 - n; //得到小数点位置， 转换后的字符串，即是按这个位置的放放大倍数的整数。
string str1 , str2;
str1 = str.Substring ( 0 , n ); //get left part of pint.
str2 = str.Substring ( str.Length - PointW , PointW ); //get right part of pint.
str = str1 + str2; //combin without point.
l = Convert.ToInt32 ( str );
}
}
catch ( Exception e )
{
FrontFlag.CONTROL ctrl = new CONTROL ();
ctrl.MsgBox.Show ( "Err at A2L() function" );
}
return l;
}
//转换后，钱币数字同时放大 MACRO_PricePoint 倍，保证是一个没有小数点的 long性数字。
public long Str2Price ( string str )
{
if ( str.Trim () == String.Empty )
return 0;
int PricePointW = MACRO_PricePoint;
long lPrice = 0;
int PointW = 0;
try
{
int n = str.IndexOf ( "." ); //F.ind ( "." ) ;
if ( n < 0 )
{
lPrice = Convert.ToInt32 ( str ); //atol ( str ) ;
for ( int i = 0 ; i < PricePointW ; i++ )
lPrice *= 10;
}
else
{
int len = str.Length;
PointW = len - 1 - n;
string str1 , str2;
str1 = str.Substring ( 0 , n ); //str.Left ( n ) ;
str2 = str.Substring ( str.Length - PointW , PointW ); //str.Right ( PointW ) ;
str = str1 + str2;
lPrice = Convert.ToInt32 ( str ); //atol ( str ) ;
if ( PointW <= PricePointW )
{
for ( int i = 0 ; i < ( PricePointW - PointW ) ; i++ )
lPrice *= 10;
}
else
{
for ( int i = 0 ; i < ( PointW - PricePointW ) ; i++ )
lPrice /= 10;
}
}
}
catch ( Exception e )
{
FrontFlag.CONTROL ctrl = new CONTROL () ;
ctrl.MsgBox.Show ( "Err at Str2Price() function" );
}
return lPrice;
}