本文整理汇总了C#中System.String.Substr方法的典型用法代码示例。如果您正苦于以下问题：C# String.Substr方法的具体用法？C# String.Substr怎么用？C# String.Substr使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.String的用法示例。
在下文中一共展示了String.Substr方法的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: UnescapeString
public static String UnescapeString(String Value)
{
if (Value.Length < 2) throw(new Exception("Invalid String [1]"));
if (Value[0] != '\'' && Value[0] != '"') throw (new Exception("Invalid String [2]"));
if (Value.Substr(0, 1) != Value.Substr(-1, 1)) throw (new Exception("Invalid String [3]"));
String RetString = "";
Value = Value.Substr(1, -1);
for (int n = 0; n < Value.Length; n++)
{
if (Value[n] == '\\')
{
switch (Value[++n])
{
case 'n': RetString += '\n'; break;
case 'r': RetString += '\r'; break;
case 't': RetString += '\t'; break;
default: throw(new Exception("Unknown Escape Sequence"));
}
}
else
{
RetString += Value[n];
}
}
return RetString;
}示例2: encode2
/// <returns> a byte array of horizontal pixels (0 = white, 1 = black)
/// </returns>
public override sbyte[] encode2(String contents)
{
if (contents.Length != 8)
{
throw new Exception("ArgumentException: Requested contents should be 8 digits long, but got " + contents.Length);
}
sbyte[] result = new sbyte[codeWidth];
int pos = 0;
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, 1);
for (int i = 0; i <= 3; i++)
{
int digit = Int32.Parse(contents.Substr(i, (i + 1) - (i)));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], 0);
}
pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, 0);
for (int i = 4; i <= 7; i++)
{
int digit = Int32.Parse(contents.Substr(i, (i + 1) - (i)));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], 1);
}
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, 1);
return result;
}示例3: ParseIntegerConstant
public static int ParseIntegerConstant(String Value, int DefaultBase = 10)
{
try
{
Value = Value.Replace("_", "");
if (Value.Substr(0, 1) == "-") return -ParseIntegerConstant(Value.Substr(1));
if (Value.Substr(0, 1) == "+") return +ParseIntegerConstant(Value.Substr(1));
if (Value.Substr(0, 2) == "0x") return Convert.ToInt32(Value.Substr(2), 16);
if (Value.Substr(0, 2) == "0b") return Convert.ToInt32(Value.Substr(2), 2);
return Convert.ToInt32(Value, DefaultBase);
}
catch (FormatException FormatException)
{
throw (new FormatException("Can't parse the string '" + Value + "'", FormatException));
}
}示例4: encode2
public override sbyte[] encode2(String contents)
{
if (contents.Length != 13)
{
throw new Exception("ArgumentException: Requested contents should be 13 digits long, but got " + contents.Length);
}
int firstDigit = Int32.Parse(contents.Substr(0, (1) - (0)));
int parities = EAN13Reader.FIRST_DIGIT_ENCODINGS[firstDigit];
sbyte[] result = new sbyte[codeWidth];
int pos = 0;
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, 1);
// See {@link #EAN13Reader} for a description of how the first digit & left bars are encoded
for (int i = 1; i <= 6; i++)
{
int digit = Int32.Parse(contents.Substr(i, (i + 1) - (i)));
if ((parities >> (6 - i) & 1) == 1)
{
digit += 10;
}
pos += appendPattern(result, pos, UPCEANReader.L_AND_G_PATTERNS[digit], 0);
}
pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, 0);
for (int i = 7; i <= 12; i++)
{
int digit = Int32.Parse(contents.Substr(i, (i + 1) - (i)));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], 1);
}
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, 1);
return result;
}示例5: TokenizeRegex
/*
static public IEnumerable<String> TokenizeRegex(String Line)
{
var Matches = new Regex(@"(\+\d+|-\d+|[%\w]+|\S)", RegexOptions.Compiled).Matches(Line);
var Ret = new String[Matches.Count];
for (int n = 0; n < Matches.Count; n++) Ret[n] = Matches[n].Value;
return Ret;
}
*/
public static IEnumerable<String> TokenizeFast(String Line)
{
var Parts = new List<String>();
for (int n = 0; n < Line.Length; n++)
{
if (IsIdent(Line[n]))
{
int m = n;
for (; n < Line.Length && IsIdent(Line[n]); n++) { }
Parts.Add(Line.Substr(m, n - m));
n--;
}
else
{
if (!IsSpace(Line[n]))
{
Parts.Add("" + Line[n]);
}
}
}
return Parts;
}示例6: urlDecode
private static String urlDecode(String escaped)
{
// No we can't use java.net.URLDecoder here. JavaME doesn't have it.
if (escaped == null)
{
return null;
}
char[] escapedArray = StringExtend.ToCharArray(escaped);
int first = findFirstEscape(escapedArray);
if (first < 0)
{
return escaped;
}
int max = escapedArray.Length;
// final length is at most 2 less than original due to at least 1 unescaping
StringBuilder unescaped = new StringBuilder();
// Can append everything up to first escape character
unescaped.Append(escaped.Substr(0, first));
for (int i = first; i < max; i++)
{
char c = escapedArray[i];
if (c == '+')
{
// + is translated directly into a space
unescaped.Append(' ');
}
else if (c == '%')
{
// Are there even two more chars? if not we will just copy the escaped sequence and be done
if (i >= max - 2)
{
unescaped.Append('%'); // append that % and move on
}
else
{
int firstDigitValue = parseHexDigit(escapedArray[++i]);
int secondDigitValue = parseHexDigit(escapedArray[++i]);
if (firstDigitValue < 0 || secondDigitValue < 0)
{
// bad digit, just move on
unescaped.Append('%');
unescaped.Append(escapedArray[i - 1]);
unescaped.Append(escapedArray[i]);
}
unescaped.Append((char) ((firstDigitValue << 4) + secondDigitValue));
}
}
else
{
unescaped.Append(c);
}
}
return unescaped.ToString();
}示例7: appendKeyValue
private static void appendKeyValue(String uri, int paramStart, int paramEnd, Dictionary result)
{
//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
int separator = uri.IndexOf('=', paramStart);
if (separator >= 0)
{
// key = value
String key = uri.Substr(paramStart, (separator) - (paramStart));
String value_Renamed = uri.Substr(separator + 1, (paramEnd) - (separator + 1));
value_Renamed = urlDecode(value_Renamed);
result[key] = value_Renamed;
}
// Can't put key, null into a hashtable
}示例8: unescapeBackslash
protected internal static String unescapeBackslash(String escaped)
{
if (escaped != null)
{
int backslash = escaped.IndexOf('\\');
if (backslash >= 0)
{
int max = escaped.Length;
StringBuilder unescaped = new StringBuilder();
unescaped.Append(escaped.Substr(0, backslash));
bool nextIsEscaped = false;
for (int i = backslash; i < max; i++)
{
char c = escaped.CharAt(i);
if (nextIsEscaped || c != '\\')
{
unescaped.Append(c);
nextIsEscaped = false;
}
else
{
nextIsEscaped = true;
}
}
return unescaped.ToString();
}
}
return escaped;
}示例9: matchPrefixedField
internal static String[] matchPrefixedField(String prefix, String rawText, char endChar, bool trim)
{
ArrayList matches = null;
int i = 0;
int max = rawText.Length;
while (i < max)
{
//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
i = rawText.IndexOf(prefix, i);
if (i < 0)
{
break;
}
i += prefix.Length; // Skip past this prefix we found to start
int start = i; // Found the start of a match here
bool done = false;
while (!done)
{
//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
i = rawText.IndexOf((Char) endChar, i);
if (i < 0)
{
// No terminating end character? uh, done. Set i such that loop terminates and break
i = rawText.Length;
done = true;
}
else if (rawText.CharAt(i - 1) == '\\')
{
// semicolon was escaped so continue
i++;
}
else
{
// found a match
if (matches == null)
{
matches = new ArrayList(); // lazy init
}
String element = unescapeBackslash(rawText.Substr(start, (i) - (start)));
if (trim)
{
element = element.Trim();
}
matches.Add(element);
i++;
done = true;
}
}
}
if (matches == null || (matches.Count == 0))
{
return null;
}
return toStringArray(matches);
}示例10: matchVCardPrefixedField
private static String[] matchVCardPrefixedField(String prefix, String rawText, bool trim)
{
ArrayList matches = null;
int i = 0;
int max = rawText.Length;
while (i < max)
{
//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
i = rawText.IndexOf(prefix, i);
if (i < 0)
{
break;
}
if (i > 0 && rawText.CharAt(i - 1) != '\n')
{
// then this didn't start a new token, we matched in the middle of something
i++;
continue;
}
i += prefix.Length; // Skip past this prefix we found to start
if (rawText.CharAt(i) != ':' && rawText.CharAt(i) != ';')
{
continue;
}
while (rawText.CharAt(i) != ':')
{
// Skip until a colon
i++;
}
i++; // skip colon
int start = i; // Found the start of a match here
//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
i = rawText.IndexOf('\n', i); // Really, ends in \r\n
if (i < 0)
{
// No terminating end character? uh, done. Set i such that loop terminates and break
i = max;
}
else if (i > start)
{
// found a match
if (matches == null)
{
matches = new ArrayList(); // lazy init
}
String element = rawText.Substr(start, (i) - (start));
if (trim)
{
element = element.Trim();
}
matches.Add(element);
i++;
}
else
{
i++;
}
}
if (matches == null || (matches.Count == 0))
{
return null;
}
return toStringArray(matches);
}示例11: parseName
private static String parseName(String name)
{
int comma = name.IndexOf(',');
if (comma >= 0)
{
// Format may be last,first; switch it around
return name.Substr(comma + 1) + ' ' + name.Substr(0, (comma) - (0));
}
return name;
}