string test ="4/22 4:34:21"; int index = test.IndexOf(":"); if (index > -1) { int total = test.IndexOf(":", test.IndexOf(":") + 1); Response.Write(total) }看看可以不
string time = "4/22 4:34:21"; int index=time.LastIndexOf(":"); Console.WriteLine(time.SubString(0,index));
string time="4/22 4:34:21" int index = time.LastIndexOf(":"); string类的LastIndexOf("")表示的意思是从后面开始遍历,然后返回找到的值在该字符串中的索引。
string time = "4/22 4:34:21";
int index=time.LastIndexOf(":");
Console.WriteLine(index);
Console.Write(str[str.count]);
int index = test.IndexOf(":");
if (index > -1)
{
int total = test.IndexOf(":", test.IndexOf(":") + 1);
Response.Write(total)
}看看可以不
int index=time.LastIndexOf(":");
Console.WriteLine(time.SubString(0,index));
string time="4/22 4:34:21"
int index = time.LastIndexOf(":");
string类的LastIndexOf("")表示的意思是从后面开始遍历,然后返回找到的值在该字符串中的索引。