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String.EndsWith Method (String, StringComparison)

Determines whether the end of this string instance matches the specified string when compared using the specified comparison option.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public bool EndsWith(
	string value,
	StringComparison comparisonType


Type: System.String
The string to compare to the substring at the end of this instance.
Type: System.StringComparison
One of the enumeration values that determines how this string and value are compared.

Return Value

Type: System.Boolean
true if the value parameter matches the end of this string; otherwise, false.


value is null.


comparisonType is not a StringComparison value.

The EndsWith method compares the value parameter to the substring at the end of this string and returns a value that indicates whether they are equal. To be equal, value must be a reference to this same string, must be the empty string (""), or must match the end of this string. The type of comparison performed by the EndsWith method depends on the value of the comparisonType parameter.

The following example determines whether a string ends with a particular substring. The results are affected by the choice of culture, whether case is ignored, and whether an ordinal comparison is performed.

// This example demonstrates the 
// System.String.EndsWith(String, StringComparison) method.

using System;
using System.Threading;

class Sample 
    public static void Main() 
    string intro = "Determine whether a string ends with another string, " +
                   "using\n  different values of StringComparison.";

    StringComparison[] scValues = {
        StringComparison.OrdinalIgnoreCase };


// Display the current culture because the culture-specific comparisons
// can produce different results with different cultures.
    Console.WriteLine("The current culture is {0}.\n", 

// Determine whether three versions of the letter I are equal to each other. 
    foreach (StringComparison sc in scValues)
        Console.WriteLine("StringComparison.{0}:", sc);
        Test("abcXYZ", "XYZ", sc);
        Test("abcXYZ", "xyz", sc);

    protected static void Test(string x, string y, StringComparison comparison)
    string resultFmt = "\"{0}\" {1} with \"{2}\".";
    string result = "does not end";
    if (x.EndsWith(y, comparison))
        result = "ends";
    Console.WriteLine(resultFmt, x, result, y);

This code example produces the following results:

Determine whether a string ends with another string, using
  different values of StringComparison.
The current culture is en-US.

"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.