Object - ToNullableCharOrDefault
An object extension method that converts this object to a nullable character or default.
public static void Main() { object val1 = 'a'; object val2 = '-'; object thisNull = null; object thisInvalid = "FizzBuzz"; string format = "{0, -20} {1, -15}"; Console.WriteLine(format, "Object", "ToNullableCharOrDefault"); Console.WriteLine(format, "------", "-----------------------"); // C# Extension Method: Object - ToNullableCharOrDefault Console.WriteLine(format, val1, val1.ToNullableCharOrDefault()); Console.WriteLine(format, val2, val2.ToNullableCharOrDefault()); Console.WriteLine(format, "null", thisNull.ToNullableCharOrDefault()); Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableCharOrDefault()); Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableCharOrDefault('.')); Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableCharOrDefault(() => '.')); }
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using System; public static partial class Extensions { /// <summary> /// An object extension method that converts this object to a nullable character or default. /// </summary> /// <param name="this">The @this to act on.</param> /// <returns>The given data converted to a char?</returns> public static char? ToNullableCharOrDefault(this object @this) { try { if (@this == null || @this == DBNull.Value) { return null; } return Convert.ToChar(@this); } catch (Exception) { return default(char); } } /// <summary> /// An object extension method that converts this object to a nullable character 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 char?</returns> public static char? ToNullableCharOrDefault(this object @this, char? defaultValue) { try { if (@this == null || @this == DBNull.Value) { return null; } return Convert.ToChar(@this); } catch (Exception) { return defaultValue; } } /// <summary> /// An object extension method that converts this object to a nullable character 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 char?</returns> public static char? ToNullableCharOrDefault(this object @this, Func<char?> defaultValueFactory) { try { if (@this == null || @this == DBNull.Value) { return null; } return Convert.ToChar(@this); } catch (Exception) { return defaultValueFactory(); } } }