Mega Code Archive
0248 String comparison for equality
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We can use == to check the equality between two string values
using System;
class Sample
{
public static void Main()
{
string s1 = "rntsoft.com";
string s2 = "rntsoft.coM";
if (s1.ToUpper() == s2.ToUpper())
{
Console.WriteLine("equal");
}
}
}
The output:
equal
Equals method from string type provides the same functionality and adds more features.
using System;
class Sample
{
public static void Main()
{
string s1 = "rntsoft.com";
string s2 = "rntsoft.coM";
if (s1.ToUpper().Equals(s2.ToUpper()))
{
Console.WriteLine("equal");
}
}
}
The output:
equal
Further more we can compare two string ignoring the case by specifying case-insensitive option.
using System;
class Sample
{
public static void Main()
{
string s1 = "rntsoft.com";
string s2 = "rntsoft.coM";
if (s1.Equals(s2, StringComparison.OrdinalIgnoreCase))
{
Console.WriteLine("equal");
}
}
}
The output:
equal
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