Add extensions, adjust validation, refactor.

Add new extension methods, adjust validation for input params, small code refactor.

docs/CHANGELOG.md

@@ -67,4 +67,12 @@
 
 ### **v.1.0.8.0638** 
 -> Added string extension `GetHashSha512String`, `FromSpaceSeparatedString`, `IsMissing`, `IsNullOrEmpty`, `AddQueryString`, `AddHashFragment`, `GetOrigin`, `Obfuscate`.<br />
--> Added Enumerable extension `ToSpaceSeparatedString`, `HasDuplicates`, `GetDuplicates`.<br />
+-> Added Enumerable extension `ToSpaceSeparatedString`, `HasDuplicates`, `GetDuplicates`.<br />
+
+### **v.1.0.9.2108** 
+-> Added object extensions `ThrowIfArgNull`, `ThrowArgIfNull`.<br />
+-> Added bool extensions `IsTrue`, `IsFalse`.<br />
+-> Added null check extensions `IsNotNull`, `IsDbNull`.<br />
+-> Added string extensions `ThrowArgIfNull`, `ThrowArgIfNullOrEmpty`, `ThrowIfArgNull`, `ThrowIfArgNullOrEmpty`.<br />
+-> Adjust validation for input params at some methods.
+-> Small code refactor.

src/DomainCommonExtensions/ArraysExtensions/EnumerableExtensions.cs

@@ -57,7 +57,7 @@ public static IEnumerable<T> Replace<T>(this IEnumerable<T> enumerable, int inde
         /// <returns></returns>
         public static string Join(this IEnumerable<string> source, string separator)
         {
-            return source == null ? string.Empty : string.Join(separator, source);
+            return source.IsNull() ? string.Empty : string.Join(separator, source);
         }
 
         /// <summary>

src/DomainCommonExtensions/CommonExtensions/DocumentationExtensions.cs

@@ -72,7 +72,7 @@ public static XmlElement GetDocumentation(this MethodInfo methodInfo)
         /// <returns>The XML fragment describing the member</returns>
         public static XmlElement GetDocumentation(this MemberInfo memberInfo)
         {
-            if (memberInfo .IsNull()) return null;
+            if (memberInfo.IsNull()) return null;
 
             // First character [0] of member type is prefix character in the name in the XML
             return XmlFromName(memberInfo.DeclaringType, memberInfo.MemberType.ToString()[0], memberInfo.Name);
@@ -89,7 +89,7 @@ public static string GetSummary(this MemberInfo memberInfo)
             var summaryElm = element?.SelectSingleNode("summary");
             if (summaryElm.IsNull()) return "";
 
-            return summaryElm.InnerText.Trim();
+            return summaryElm?.InnerText.Trim();
         }
 
         /// <summary>
@@ -112,9 +112,9 @@ public static string GetSummary(this Type type)
         {
             var element = type.GetDocumentation();
             var summaryElm = element?.SelectSingleNode("summary");
-            if (summaryElm .IsNull()) return "";
+            if (summaryElm.IsNull()) return "";
 
-            return summaryElm.InnerText.Trim();
+            return summaryElm?.InnerText.Trim();
         }
 
         /// <summary>
@@ -129,7 +129,7 @@ private static XmlElement XmlFromName(this Type type, char prefix, string name)
         {
             string fullName;
 
-            if (string.IsNullOrEmpty(name))
+            if (name.IsNullOrEmpty())
                 fullName = prefix + ":" + type.FullName;
             else
                 fullName = prefix + ":" + type.FullName + "." + name;

src/DomainCommonExtensions/CommonExtensions/Encryption/AESEncryptionExtensions.cs

@@ -22,6 +22,7 @@
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
+using DomainCommonExtensions.DataTypeExtensions;
 
 #endregion
 
@@ -37,6 +38,9 @@ public static partial class CryptoExtensions
         /// <returns></returns>
         public static string AesEncryptString(this string plainText, string key)
         {
+            key.ThrowIfArgNullOrEmpty(nameof(key));
+            plainText.ThrowIfArgNull(nameof(plainText));
+
             var iv = new byte[16];
             byte[] array;
 
@@ -72,6 +76,9 @@ public static string AesEncryptString(this string plainText, string key)
         /// <returns></returns>
         public static string AesDecryptString(this string cipherText, string key)
         {
+            key.ThrowIfArgNullOrEmpty(nameof(key));
+            cipherText.ThrowIfArgNullOrEmpty(nameof(cipherText));
+
             var iv = new byte[16];
             var buffer = Convert.FromBase64String(cipherText);
 

src/DomainCommonExtensions/CommonExtensions/Encryption/RSAEncryptionExtensions.cs

@@ -18,6 +18,8 @@
 using System.Globalization;
 using System.Security.Cryptography;
 using System.Text;
+using DomainCommonExtensions.DataTypeExtensions;
+
 // ReSharper disable CheckNamespace
 
 namespace DomainCommonExtensions.CommonExtensions
@@ -34,11 +36,8 @@ public static partial class CryptoExtensions
         // ReSharper disable once InconsistentNaming
         public static string EncryptWithRSA(this string stringToEncrypt, string key)
         {
-            if (string.IsNullOrEmpty(stringToEncrypt))
-                throw new ArgumentException("An empty string value cannot be encrypted.");
-
-            if (string.IsNullOrEmpty(key))
-                throw new ArgumentException("Cannot encrypt using an empty key. Please supply an encryption key.");
+            stringToEncrypt.ThrowArgIfNullOrEmpty("An empty string value cannot be encrypted.");
+            key.ThrowArgIfNullOrEmpty("Cannot encrypt using an empty key. Please supply an encryption key.");
 
             var cspp = new CspParameters { KeyContainerName = key };
             var rsa = new RSACryptoServiceProvider(cspp) { PersistKeyInCsp = true };
@@ -58,12 +57,8 @@ public static string EncryptWithRSA(this string stringToEncrypt, string key)
         public static string DecryptWithRSA(this string stringToDecrypt, string key)
         {
             string result = null;
-
-            if (string.IsNullOrEmpty(stringToDecrypt))
-                throw new ArgumentException("An empty string value cannot be encrypted.");
-
-            if (string.IsNullOrEmpty(key))
-                throw new ArgumentException("Cannot decrypt using an empty key. Please supply a decryption key.");
+            stringToDecrypt.ThrowArgIfNullOrEmpty("An empty string value cannot be decrypted.");
+            key.ThrowArgIfNullOrEmpty("Cannot decrypt using an empty key. Please supply a decryption key.");
 
             try
             {

src/DomainCommonExtensions/CommonExtensions/ExceptionExtensions.cs

@@ -42,18 +42,18 @@ public static string GetFullError(this Exception ex, bool showCallStack = true)
             {
                 if (!showCallStack)
                 {
-                    if (ex.Message != "An error occurred while updating the entries. See the inner exception for details.")
-                        result.AppendLine(ex.Message);
+                    if (ex?.Message != "An error occurred while updating the entries. See the inner exception for details.")
+                        result.AppendLine(ex?.Message);
                 }
                 else
-                    result.AppendLine(ex.Message);
+                    result.AppendLine(ex?.Message);
 
                 if (showCallStack)
-                    result.Append(ex.StackTrace);
+                    result.Append(ex?.StackTrace);
 
                 ex = ex.InnerException;
             }
-            while (ex != null);
+            while (ex.IsNotNull());
 
             return result?.ToString().TrimIfNotNull();
         }

src/DomainCommonExtensions/CommonExtensions/ExpandoObjectExtensions.cs

@@ -72,6 +72,7 @@ public static void UpdateValue(this ExpandoObject expando, string propertyName,
         public static object GetValue(this ExpandoObject expando, string key)
         {
             object r = expando.FirstOrDefault(x => x.Key == key).Value;
+
             return r;
         }
     }

src/DomainCommonExtensions/CommonExtensions/NullExtensions.cs

@@ -16,6 +16,7 @@
 
 #region U S A G E S
 
+using System;
 using System.Collections.Generic;
 
 #endregion
@@ -31,12 +32,10 @@ public static class NullExtensions
         /// <summary>
         ///     Is null
         /// </summary>
-        /// <param name="obj"></param>
+        /// <param name="obj">Object to be checked</param>
         /// <returns></returns>
         public static bool IsNull(this object obj)
-        {
-            return obj == null;
-        }
+            => obj == null;
 
         /// <summary>
         ///     Check if KeyValue is null
@@ -49,5 +48,21 @@ public static bool IsNull<TK, TV>(this KeyValuePair<TK, TV> source)
         {
             return source.Equals(default(KeyValuePair<TK, TV>));
         }
+
+        /// <summary>
+        ///     Is not null
+        /// </summary>
+        /// <param name="obj">Object to be checked</param>
+        /// <returns></returns>
+        public static bool IsNotNull(this object obj)
+            => obj != null;
+
+        /// <summary>
+        ///     Is if source object is DBNull
+        /// </summary>
+        /// <param name="obj">Object to be checked</param>
+        /// <returns></returns>
+        public static bool IsDbNull(this object obj)
+            => obj == DBNull.Value;
     }
 }

src/DomainCommonExtensions/CommonExtensions/PredicateBuilderExtensions.cs

@@ -63,6 +63,7 @@ public static Expression<Func<T, bool>> Or<T>(this Expression<Func<T, bool>> exp
             Expression<Func<T, bool>> expr2)
         {
             var invokedExpr = Expression.Invoke(expr2, expr1.Parameters);
+
             return Expression.Lambda<Func<T, bool>>
                 (Expression.OrElse(expr1.Body, invokedExpr), expr1.Parameters);
         }
@@ -79,6 +80,7 @@ public static Expression<Func<T, bool>> And<T>(this Expression<Func<T, bool>> ex
             Expression<Func<T, bool>> expr2)
         {
             var invokedExpr = Expression.Invoke(expr2, expr1.Parameters);
+
             return Expression.Lambda<Func<T, bool>>
                 (Expression.AndAlso(expr1.Body, invokedExpr), expr1.Parameters);
         }

src/DomainCommonExtensions/CommonExtensions/ReflectionExtensions.cs

@@ -37,7 +37,7 @@ public static class ReflectionExtensions
         public static void CopyProperties(this object source, object destination)
         {
             //if any this null throw an exception
-            if (source == null || destination == null)
+            if (source.IsNull() || destination.IsNull())
                 throw new Exception("Source or/and Destination Objects are null");
 
             var typeDest = destination.GetType();
@@ -50,7 +50,7 @@ public static void CopyProperties(this object source, object destination)
                 if (!srcProp.CanRead)
                     continue;
                 var targetProperty = typeDest.GetProperty(srcProp.Name);
-                if (targetProperty == null)
+                if (targetProperty.IsNull())
                     continue;
                 if (!targetProperty.CanWrite)
                     continue;

src/DomainCommonExtensions/CommonExtensions/SystemData/DataReaderExtensions.cs

@@ -122,6 +122,7 @@ public static bool ContainsColumnAndIsNotNullOrEmpty(this IDataReader dataReader
                 if (dataReader.GetOrdinal(columnName).IsGreaterThanOrEqualZero())
                     return dataReader[columnName] != DBNull.Value &&
                            !string.IsNullOrEmpty(dataReader[columnName].ToString());
+
                 return false;
             }
             catch (IndexOutOfRangeException)

src/DomainCommonExtensions/CommonExtensions/TypeExtensions.cs

@@ -23,6 +23,7 @@
 using System.Runtime.CompilerServices;
 using System.Text;
 using DomainCommonExtensions.DataTypeExtensions;
+// ReSharper disable ExpressionIsAlwaysNull
 
 #endregion
 
@@ -64,7 +65,7 @@ public static class TypeExtensions
         /// <remarks></remarks>
         public static object GetPropertyValue(this object obj, string name)
         {
-            if (obj == null)
+            if (obj.IsNull())
                 throw new ArgumentNullException(nameof(obj));
 
             return obj?.GetType()
@@ -81,7 +82,7 @@ public static object GetPropertyValue(this object obj, string name)
         /// <remarks></remarks>
         public static string GetStringPropertyValue(this object obj, string name)
         {
-            if (obj == null)
+            if (obj.IsNull())
                 throw new ArgumentNullException(nameof(obj));
 
             return obj?.GetType()
@@ -97,7 +98,7 @@ public static string GetStringPropertyValue(this object obj, string name)
         /// <remarks></remarks>
         public static bool IsAnonymousType(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             return Attribute.IsDefined(type, typeof(CompilerGeneratedAttribute), false)
@@ -114,7 +115,7 @@ public static bool IsAnonymousType(this Type type)
         /// <remarks></remarks>
         public static bool IsNullablePropType(this Type type)
         {
-            if (type == null) throw new ArgumentNullException(nameof(type));
+            if (type.IsNull()) throw new ArgumentNullException(nameof(type));
 
             return type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>);
         }
@@ -133,7 +134,7 @@ public static T GetValue<T>(this Type type)
             var t = typeof(T);
             t = Nullable.GetUnderlyingType(t) ?? t;
 
-            return value == null || DBNull.Value.Equals(value)
+            return value.IsNull() || DBNull.Value.Equals(value)
                 ? default
                 : (T)Convert.ChangeType(value, t);
         }
@@ -147,21 +148,21 @@ public static T GetValue<T>(this Type type)
         /// <remarks></remarks>
         public static string GetSelectedFieldFromEntity(this Type type, IEnumerable<string> fields = null)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var searchBuilder = new StringBuilder();
             var propsInfo = type.GetProperties();
             var props = propsInfo.Select(x => x.Name).ToList();
 
-            if (fields != null && fields.Any())
+            if (fields.IsNotNull() && fields.Any())
             {
                 //Return only specified fields
                 foreach (var field in fields.ToList())
                     if (props.Contains(field))
                     {
                         var propType = propsInfo.FirstOrDefault(x => x.Name == field);
-                        if (propType != null) searchBuilder.Append($"{field},");
+                        if (propType.IsNotNull()) searchBuilder.Append($"{field},");
                     }
             }
             else
@@ -181,7 +182,7 @@ public static string GetSelectedFieldFromEntity(this Type type, IEnumerable<stri
         /// <remarks></remarks>
         public static bool IsSimpleType(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var underlyingType = Nullable.GetUnderlyingType(type);
@@ -219,7 +220,7 @@ public static bool IsSimpleType(this Type type)
         /// <remarks></remarks>
         public static bool IsTypeOfInt(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var underlyingType = Nullable.GetUnderlyingType(type);
@@ -245,7 +246,7 @@ public static bool IsTypeOfInt(this Type type)
         /// <remarks></remarks>
         public static bool IsTypeOfNullableInt(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var simpleTypes = new List<Type>
@@ -269,7 +270,7 @@ public static bool IsTypeOfNullableInt(this Type type)
         /// <remarks></remarks>
         public static bool IsTypeOfFloatingPoint(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var underlyingType = Nullable.GetUnderlyingType(type);
@@ -292,7 +293,7 @@ public static bool IsTypeOfFloatingPoint(this Type type)
         /// <remarks></remarks>
         public static bool IsTypeOfNullableFloatingPoint(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var simpleTypes = new List<Type>
@@ -313,7 +314,7 @@ public static bool IsTypeOfNullableFloatingPoint(this Type type)
         /// <remarks></remarks>
         public static bool IsEnumType(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var underlyingType = Nullable.GetUnderlyingType(type);
@@ -330,7 +331,7 @@ public static bool IsEnumType(this Type type)
         /// <remarks></remarks>
         public static bool IsStringType(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             var underlyingType = Nullable.GetUnderlyingType(type);
@@ -347,7 +348,7 @@ public static bool IsStringType(this Type type)
         /// <remarks></remarks>
         public static Type GetNonNullableType(this Type type)
         {
-            if (type == null)
+            if (type.IsNull())
                 throw new ArgumentNullException(nameof(type));
 
             return type.IsNullablePropType()