Object - ToGuidOrDefault
An object extension method that converts this object to a unique identifier or default.
public static void Main() { object val1 = "ca761232ed4211cebacd00aa0057b223"; object val2 = "{0xCA761232, 0xED42, 0x11CE, {0xBA, 0xCD, 0x00, 0xAA, 0x00, 0x57, 0xB2, 0x23}}"; object thisInvalid = "A100"; string format = "{0, -100} {1, -15}"; Console.WriteLine(format, "Object", "ToGuidOrDefault"); Console.WriteLine(format, "------", "---------------"); // C# Extension Method: Object - ToGuidOrDefault Console.WriteLine(format, val1, val1.ToGuidOrDefault()); Console.WriteLine(format, val2, val2.ToGuidOrDefault()); Console.WriteLine(format, thisInvalid, thisInvalid.ToGuidOrDefault()); Console.WriteLine(format, thisInvalid, thisInvalid.ToGuidOrDefault(Guid.NewGuid())); Console.WriteLine(format, thisInvalid, thisInvalid.ToGuidOrDefault(() => Guid.NewGuid())); }
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using System; public static partial class Extensions { /// <summary> /// An object extension method that converts this object to a unique identifier or default. /// </summary> /// <param name="this">The @this to act on.</param> /// <returns>The given data converted to a GUID.</returns> public static Guid ToGuidOrDefault(this object @this) { try { return new Guid(@this.ToString()); } catch (Exception) { return Guid.Empty; } } /// <summary> /// An object extension method that converts this object to a unique identifier or default. /// </summary> /// <param name="this">The @this to act on.</param> /// <param name="defaultValue">The default value.</param> /// <returns>The given data converted to a GUID.</returns> public static Guid ToGuidOrDefault(this object @this, Guid defaultValue) { try { return new Guid(@this.ToString()); } catch (Exception) { return defaultValue; } } /// <summary> /// An object extension method that converts this object to a unique identifier or default. /// </summary> /// <param name="this">The @this to act on.</param> /// <param name="defaultValue">The default value.</param> /// <param name="useDefaultIfNull">true to use default if null.</param> /// <returns>The given data converted to a GUID.</returns> public static Guid ToGuidOrDefault(this object @this, Guid defaultValue, bool useDefaultIfNull) { if (useDefaultIfNull && @this == null) { return defaultValue; } try { return new Guid(@this.ToString()); } catch (Exception) { return defaultValue; } } /// <summary> /// An object extension method that converts this object to a unique identifier or default. /// </summary> /// <param name="this">The @this to act on.</param> /// <param name="defaultValueFactory">The default value factory.</param> /// <returns>The given data converted to a GUID.</returns> public static Guid ToGuidOrDefault(this object @this, Func<Guid> defaultValueFactory) { try { return new Guid(@this.ToString()); } catch (Exception) { return defaultValueFactory(); } } /// <summary> /// An object extension method that converts this object to a unique identifier or default. /// </summary> /// <param name="this">The @this to act on.</param> /// <param name="defaultValueFactory">The default value factory.</param> /// <param name="useDefaultIfNull">true to use default if null.</param> /// <returns>The given data converted to a GUID.</returns> public static Guid ToGuidOrDefault(this object @this, Func<Guid> defaultValueFactory, bool useDefaultIfNull) { if (useDefaultIfNull && @this == null) { return defaultValueFactory(); } try { return new Guid(@this.ToString()); } catch (Exception) { return defaultValueFactory(); } } }