C#自定义的字符串操作增强类的代码

把做工程过程经常用到的一些代码做个收藏，如下的代码段是关于C#自定义的字符串操作增强类的代码。
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace DotNet.Utilities
{
public class StringPlus
{
public static List<string> GetStrArray(string str, char speater, bool toLower)
{
List<string> list = new List<string>();
string[] ss = str.Split(speater);
foreach (string s in ss)
{
if (!string.IsNullOrEmpty(s) && s != speater.ToString())
{
string strVal = s;
if (toLower)
{
strVal = s.ToLower();
}
list.Add(strVal);
}
}
return list;
}
public static string[] GetStrArray(string str)
{
return str.Split(new Char[] { ',' });
}
public static string GetArrayStr(List<string> list, string speater)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < list.Count; i++)
{
if (i == list.Count - 1)
{
sb.Append(list[i]);
}
else
{
sb.Append(list[i]);
sb.Append(speater);
}
}
return sb.ToString();
}
public static string GetArrayStr(List<int> list)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < list.Count; i++)
{
if (i == list.Count - 1)
{
sb.Append(list[i].ToString());
}
else
{
sb.Append(list[i]);
sb.Append(",");
}
}
return sb.ToString();
}
public static string GetArrayValueStr(Dictionary<int, int> list)
{
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair<int, int> kvp in list)
{
sb.Append(kvp.Value + ",");
}
if (list.Count > 0)
{
return DelLastComma(sb.ToString());
}
else
{
return "";
}
}

#region 删除最后一个字符之后的字符

public static string DelLastComma(string str)
{
return str.Substring(0, str.LastIndexOf(","));
}

public static string DelLastChar(string str, string strchar)
{
return str.Substring(0, str.LastIndexOf(strchar));
}

#endregion

public static string ToSBC(string input)
{
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i] == 32)
{
c[i] = (char)12288;
continue;
}
if (c[i] < 127)
c[i] = (char)(c[i] + 65248);
}
return new string(c);
}

public static string ToDBC(string input)
{
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i] == 12288)
{
c[i] = (char)32;
continue;
}
if (c[i] > 65280 && c[i] < 65375)
c[i] = (char)(c[i] - 65248);
}
return new string(c);
}

public static List<string> GetSubStringList(string o_str, char sepeater)
{
List<string> list = new List<string>();
string[] ss = o_str.Split(sepeater);
foreach (string s in ss)
{
if (!string.IsNullOrEmpty(s) && s != sepeater.ToString())
{
list.Add(s);
}
}
return list;
}

#region 将字符串样式转换为纯字符串
public static string GetCleanStyle(string StrList, string SplitString)
{
string RetrunValue = "";
if (StrList == null)
{
RetrunValue = "";
}
else
{
string NewString = "";
NewString = StrList.Replace(SplitString, "");
RetrunValue = NewString;
}
return RetrunValue;
}
#endregion

#region 将字符串转换为新样式
public static string GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error)
{
string ReturnValue = "";
if (StrList == null)
{
ReturnValue = "";
Error = "请输入需要划分格式的字符串";
}
else
{
int strListLength = StrList.Length;
int NewStyleLength = GetCleanStyle(NewStyle, SplitString).Length;
if (strListLength != NewStyleLength)
{
ReturnValue = "";
Error = "样式格式的长度与输入的字符长度不符，请重新输入";
}
else
{
string Lengstr = "";
for (int i = 0; i < NewStyle.Length; i++)
{
if (NewStyle.Substring(i, 1) == SplitString)
{
Lengstr = Lengstr + "," + i;
}
}
if (Lengstr != "")
{
Lengstr = Lengstr.Substring(1);
}
string[] str = Lengstr.Split(',');
foreach (string bb in str)
{
StrList = StrList.Insert(int.Parse(bb), SplitString);
}
ReturnValue = StrList;
Error = "";
}
}
return ReturnValue;
}
#endregion

public static string[] SplitMulti(string str, string splitstr)
{
string[] strArray = null;
if ((str != null) && (str != ""))
{
strArray = new Regex(splitstr).Split(str);
}
return strArray;
}
public static string SqlSafeString(string String, bool IsDel)
{
if (IsDel)
{
String = String.Replace("'", "");
String = String.Replace(""", "");
return String;
}
String = String.Replace("'", "&#39;");
String = String.Replace(""", "&#34;");
return String;
}

#region 获取正确的Id，如果不是正整数，返回0
public static int StrToId(string _value)
{
if (IsNumberId(_value))
return int.Parse(_value);
else
return 0;
}
#endregion
#region 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。
public static bool IsNumberId(string _value)
{
}
#endregion
#region 快速验证一个字符串是否符合指定的正则表达式。
public static bool QuickValidate(string _express, string _value)
{
if (_value == null) return false;
Regex myRegex = new Regex(_express);
if (_value.Length == 0)
{
return false;
}
return myRegex.IsMatch(_value);
}
#endregion
}
}