public static string SubString(string strDD, int startIndex, int length) //解決字串擷取超過範圍的問題
{
int intLen = strDD.Length;
int intSubLen = intLen - startIndex;
string strReturn;
if (length == 0)
strReturn = "";
else
{
if (intLen <= startIndex)
strReturn = "";
else
{
if (length > intSubLen)
length = intSubLen;
strReturn = strDD.Substring(startIndex, length);
}
}
return strReturn;
}
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