C#比较字符串并且忽略大小写

方案一

			//compare string and ignore case
			Console.WriteLine("Input new string 1: ");
            string input1 = Console.ReadLine();
            Console.WriteLine("Input new string 2: ");
            string input2 = Console.ReadLine();
            if(input1.Equals(input2, StringComparison.OrdinalIgnoreCase))
            {
                Console.WriteLine("Ignore case, successful!");
                Console.WriteLine("True");
            }
            else
            {
                Console.WriteLine("False");
            }

StringComparison.OrdinalIgnoreCase用于忽略大小写

方案二
1.全部转换成小写

			Console.WriteLine("Input new string 1: ");
            string input1 = Console.ReadLine();
            Console.WriteLine("Input new string 2: ");
            string input2 = Console.ReadLine();
            input1 = input1.ToLower(); //Transform lower case
            input2 = input2.ToLower();
            if(input1.Equals(input2))
            {
                Console.WriteLine("Ignore case, successful!");
                Console.WriteLine("True");
            }
            else
            {
                Console.WriteLine("False");
            }

ToLower用于将字符串或者字符全部或者部分转换成小写

2.全部准换成大写

			Console.WriteLine("Input new string 1: ");
            string input1 = Console.ReadLine();
            Console.WriteLine("Input new string 2: ");
            string input2 = Console.ReadLine();
            input1 = input1.ToUpper(); //Transform uppercase
            input2 = input2.ToUpper();
            if (input1.Equals(input2))
            {
                Console.WriteLine("Ignore case, successful!");
                Console.WriteLine("True");
            }
            else
            {
                Console.WriteLine("False");
            }

ToUpper用于将字符串或者字符全部或者部分转换成大写

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