C#截取定长字符串函数
/// <summary>
/// °´×Ö·û´®Êµ¼Ê³¤¶È½ØÈ¡¶¨³¤×Ö·û´Ü
/// </summary>
/// <param name="str">Ô-×Ö·û´®</param>
/// <param name="length">Òª½ØÈ¡µÄ³¤¶È</param>
/// <returns>stringÐÍ×Ö·û´®</returns>
public static string CutStr(string str, int length)
{
int i = 0, j = 0;
foreach (char chr in str)
{
if ((int)chr > 127)
{
i += 2;
}
else
{
i++;
}
if (i > length)
{
str = str.Substring(0, j) + "...";
break;
}
j++;
}
return str;
}
//·½·¨Èý£º
public string CutStr(string sInString,int iCutLength)
{
if(sInString==null || sInString.Length==0 || iCutLength<=0) {
return "";
}
int
iCount=System.Text.Encoding.GetEncoding("Shift_JIS").GetByteCount(sInString);
if(iCount>iCutLength)
{
int iLength=0;
C#截取定长字符串函数
for(int i=0;i<sInString.Length;i++)
{
int
iCharLength=System.Text.Encoding.GetEncoding("Shift_JIS").GetByteCount(new char[]{sInString[i]});
iLength += iCharLength;
if(iLength==iCutLength)
{
sInString=sInString.Substring(0,i+1);
break;
}
else if(iLength>iCutLength)
{
sInString=sInString.Substring(0,i);
break;
}
}
}
return sInString;
}
//·½·¨ËÄ£ºÀûÓÃÕýÔò±í´ïʽÇø·ÖÓ¢ÎÄ¡¢ºº×Ö£¬²¢½ØÈ¡×Ö·û´®
public static string CutStr(string stringToSub, int length) {
Regex regex = new Regex("[\u4e00-\u9fa5]+", piled);
char[] stringChar = stringToSub.ToCharArray();
StringBuilder sb = new StringBuilder();
int nLength = 0;
for (int i = 0; i < stringChar.Length; i++)
{
if (regex.IsMatch((stringChar[i]).ToString())) {
nLength += 2;
}
else
{
nLength = nLength + 1;
}
if (nLength <= length)
{
sb.Append(stringChar[i]);
}
C#截取定长字符串函数
else
{
break;
}
}
if (sb.ToString() != stringToSub)
{
sb.Append("...");
}
return sb.ToString();
}
//·½·¨Ò»£º
/// <summary>
/// C#½ØÈ¡¶¨³¤×Ö·û´®º¯Êý
/// </summary>
/// <param name="string1">Ô-×Ö·û´®</param>
/// <param name="Len1">³¤¶È£¨Ô-×Ö·û´®ÖÐÈ«ÊǺº×ÖʱµÄºº×Ö¸öÊý£©</param>
/// <returns>½ØÈ¡ºóµÄ×Ö·û´®£¨ReCutStr£©</returns>
public static string CutStr(string string1, int Len1) {
string ReCutstr = string.Empty;
bool Remark = false;//Èç¹û²»¹»³¤¶È£¬Îª¼Ù
int n = string1.Length;
int TrueLen = 0;
int Pcount = 0; //Ó¢ÎÄ×Ö¼ÆÊý
int Gcount = 0; //ÖÐÎÄ×Ö¼ÆÊý
int Lcount = 0; //³¤¶È¼ÆÊý
char[] bytes = string1.ToCharArray();
foreach (char chrA in bytes)
{
if (Convert.ToInt32(chrA) >= 0 && Convert.ToInt32(chrA) <= 255)
{
Pcount = Pcount + 1;
}
else //Èç¹ûÊÇÖÐÎÄ
{
Gcount = Gcount + 1;
}
Lcount = (Pcount / 2) + Gcount;
C#截取定长字符串函数
TrueLen = Pcount + Gcount;
if (Lcount > Len1)//Èç¹û³¤¶ÈÒѹ»
{
ReCutstr = string1.Substring(0, TrueLen) + "..."; Remark = true;
break;
}
}
if (!Remark)//Èç¹ûÊDz»¹»³¤¶È
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