C#类型转换3

namespace WDBuyNET.DMSFrame.Utils { public static class TypeExtentions { public static bool IsPrimitive(this Type t) { bool result; if (t.IsGenericType) { result = (TypeExtentions.IsNullableType(t) && TypeExtentions.IsPrimitive(Nullable.GetUnderlyingType(t))); } else { bool arg_14F_0; if (!(t == typeof(string)) && !(t == typeof(short)) && !(t == typeof(ushort)) && !(t == typeof(int)) && !(t == typeof(uint)) && !(t == typeof(long)) && !(t == typeof(ulong)) && !(t == typeof(float)) && !(t == typeof(double)) && !(t == typeof(decimal)) && !(t == typeof(char)) && !(t == typeof(byte)) && !(t == typeof(bool)) && !(t == typeof(DateTime))) { arg_14F_0 = (t == typeof(Guid)); } else { arg_14F_0 = true; } result = arg_14F_0; } return result; } public static bool IsStringType(this Type type) { bool arg_80_0; if (!(type == typeof(string)) && !(type == typeof(bool)) && !(type == typeof(DateTime)) && !(type == typeof(Guid)) && !(type == typeof(bool?)) && !(type == typeof(DateTime?))) { arg_80_0 = (type == typeof(Guid?)); } else { arg_80_0 = true; } return arg_80_0; } public static bool IsBooleanType(this Type type) { return TypeExtentions.GetUnderlyingType(type) == typeof(bool); } public static bool AllowsNullValue(this Type type) { return !type.IsValueType || TypeExtentions.IsNullableType(type); } public static bool IsNullableType(this Type type) { return type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable); } public static Type GetUnderlyingType(this Type type) { return TypeExtentions.IsNullableType(type) ? Nullable.GetUnderlyingType(type) : type; } public static string Join(this string[] array, char splitChar) { StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i < array.Length; i++) { stringBuilder.Append(array[i]); stringBuilder.Append(splitChar); } return stringBuilder.ToString().TrimEnd(new char[] { splitChar }); } public static object DefaultValue(this Type type) { return type.IsValueType ? Activator.CreateInstance(type) : null; } public static string MD5(this string text) { byte[] bytes = Encoding.Default.GetBytes(text); MD5CryptoServiceProvider mD5CryptoServiceProvider = new MD5CryptoServiceProvider(); byte[] array = mD5CryptoServiceProvider.ComputeHash(bytes); string text2 = ""; byte[] array2 = array; for (int i = 0; i < array2.Length; i++) { byte b = array2[i]; text2 = ((b >= 16) ? (text2 + b.ToString("X")) : (text2 + "0" + b.ToString("X"))); } return text2.ToLower(); } } }

转载于:https://www.cnblogs.com/hongjiumu/archive/2012/09/15/2686622.html