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namespace BlogEngine.Core

{

using System;

/// <summary>

/// Extension Methods.

/// </summary>

public static class Extensions

{

/// <summary>

/// Checks whether a source string contains another string based on the supplied StringComparison.

/// </summary>

/// <param name="source"></param>

/// <param name="partial"></param>

/// <param name="comparison"></param>

/// <returns></returns>

public static bool Contains(this string source, string partial, StringComparison comparison)

{

return (source.IndexOf(partial, comparison) >= 0);

}

/// <summary>

/// Tries to parse the string into the specified Guid.

/// </summary>

/// <param name="guidString">The GUID string.</param>

/// <param name="guid">The parsed GUID.</param>

/// <returns>Whether it worked or not.</returns>

public static bool TryParse(this string guidString, out Guid guid)

{

bool success;

try

{

guid = new Guid(guidString);

success = true;

}

catch

{

guid = Guid.Empty;

success = false;

}

return success;

}

/// <summary>

/// Tries to parse the string into the specified Guid.

/// </summary>

/// <param name="guidString">The GUID string.</param>

/// <param name="guid">The parsed GUID.</param>

/// <returns>Whether it worked or not.</returns>

public static bool TryParse(this string guidString, out Guid? guid)

{

bool success;

try

{

guid = new Guid(guidString);

success = true;

}

catch

{

guid = null;

success = false;

}

return success;

}

/// <summary>

/// Tries to convert the string to the specified type.

/// </summary>

/// <typeparam name="T">The type to try to convert to.</typeparam>

/// <param name="theString">The string to parse.</param>

/// <param name="output">The output.</param>

/// <returns>Whether it worked or not.</returns>

/// <remarks>

/// Abuse of a language feature? Probably.

/// </remarks>

public static bool TryParse<T>(this string theString, out T output)

{

bool success;

try

{

output = (T)Convert.ChangeType(theString, typeof(T));

success = true;

}

catch (Exception)

{

output = default(T);

success = false;

}

return success;

}

}

}