C#中整理了几种字符串截取方法小结

(1)string str1=str.Substring(0,i);
(2)string str1=str.Remove(i,str.Length-i);

string str1=str.Remove(0,i);
string str1=str.SubString(i);

string str1=str.SubString(str.Length-i);
string str1=str.Remove(0,str.Length-i);

string str1=str.Substring(0,str.Length-i);
string str1=str.Remove(str.Length-i,i);

str=str.Replace("abc","ABC");

str1.Substring(str1.LastIndexOf(",")+1);

k = k.Substring(k.Length-1, 1);

string st="GT123_1";
string[] sArray=st.split("_");

即可得到sArray[0]="GT123",sArray[1]="1";

string str = "GTAZB_JiangjBen_123";
string[] sArray = str.Split(new char[2] { 'j', '_' });
foreach(string e in sArray)
{
Console.WriteLine(e);
}

string str = "GTAZB_JiangjBen_123";
string[] sArray = str.Split( new string[]{"Ji","jB"}, StringSplitOptions.RemoveEmptyEntries);
foreach(string e in sArray)
{
Console.WriteLine(e);
}

string str = "GTAZB_JiangjBen_123";
int start=3,length=8; 
Console.WriteLine(str.Substring(start-1, length));

string str = "GTAZB_JiangjBen_123";
string tSt;
int i=5;
tSt = str.Substring(str.Length - i); 
Console.WriteLine(tSt);

string str = "GTAZB_JiangjBen_123";
string tSt;
tSt = str.Replace("123","321");
Console.WriteLine(tSt);

string str = "GTAZB_JiangjBen_123";
string tSt;
tSt = str.Replace("Jiangj","");
Console.WriteLine(tSt);

string str = "GTAZB_JiangjBen_123";
int i=5,length=8;
str=str.remove(i,length);
console.writeline(str);