How can I check a specific string to see if it contains a series of substrings? Specifically something like this:
public GetByValue(string testString) {
// if testString contains these substrings I want to throw back that string was invalid
// string cannot contain "the " or any part of the words "College" or "University"
...
}
If performance is a concern, you may want to consider using the RegexStringValidator class.
You can use string.Contains() method
http://msdn.microsoft.com/en-us/library/dy85x1sa.aspx
// This example demonstrates the String.Contains() method
using System;
class Sample
{
public static void Main()
{
string s1 = "The quick brown fox jumps over the lazy dog";
string s2 = "fox";
bool b;
b = s1.Contains(s2);
Console.WriteLine("Is the string, s2, in the string, s1?: {0}", b);
}
} /* This example produces the following results:
Is the string, s2, in the string, s1?: True */
This an interesting question. As @Jon mentioned, a regular expression might be a good start because it will allow you to evaluate multiple negative matches at once (potentially). A naive loop would be much less efficient in comparison.
You can check it as follow....
class Program
{
public static bool checkstr(string str1,string str2)
{
bool c1=str1.Contains(str2);
return c1;
}
public static void Main()
{
string st = "I am a boy";
string st1 = "boy";
bool c1=checkstr(st,st1);
//if st1 is in st then it print true otherwise false
System.Console.WriteLine(c1);
}
}
Decided against checking for strings to limit my data return, instead limited my return to a .Take(15) and if the return count is more than 65,536, just return null