Enhance dictionary safety with SafeGet, SafeSet, and SafeRemove methods. Adjust IWebContext and related tests to support nullable value types in dictionary operations. Refactor GetRequestParameter for clarity and consistency.

VAR.WebFormsCore.AspNetCore/Code/AspnetCoreWebContext.cs

@@ -34,16 +34,16 @@ public class AspnetCoreWebContext : IWebContext
     }
 
 
-    private Dictionary<string, string>? _requestCookies;
+    private Dictionary<string, string?>? _requestCookies;
 
-    public Dictionary<string, string> RequestCookies
+    public Dictionary<string, string?> RequestCookies
     {
         get
         {
             if (_requestCookies == null)
             {
                 _requestCookies = _context.Request.Cookies
-                    .ToDictionary(p => p.Key, p => p.Value);
+                    .ToDictionary(p => p.Key, p => (string?)p.Value);
             }
 
             return _requestCookies;

VAR.WebFormsCore.Tests/Code/ExtensionMethodsTests.cs

@@ -38,7 +38,7 @@ public class ExtensionMethodsTests
         FakeWebContext fakeWebContext = new();
         string key = "Key";
         string value = "Value";
-        fakeWebContext.RequestQuery.Add(key, value);
+        fakeWebContext.RequestQuery.SafeSet(key, value);
 
         string result = fakeWebContext.GetRequestParameter(key);
 
@@ -52,7 +52,7 @@ public class ExtensionMethodsTests
         FakeWebContext fakeWebContext = new(requestMethod: "POST");
         string key = "Key";
         string value = "Value";
-        fakeWebContext.RequestForm.Add(key, value);
+        fakeWebContext.RequestForm.SafeSet(key, value);
 
         string result = fakeWebContext.GetRequestParameter(key);
 
@@ -67,7 +67,7 @@ public class ExtensionMethodsTests
         string keyInvalid = "KeyInvalid";
         string key = "Key";
         string value = "Value";
-        fakeWebContext.RequestQuery.Add(keyInvalid, value);
+        fakeWebContext.RequestQuery.SafeSet(keyInvalid, value);
 
         string result = fakeWebContext.GetRequestParameter(key);
 
@@ -82,7 +82,7 @@ public class ExtensionMethodsTests
         string keyInvalid = "KeyInvalid";
         string key = "Key";
         string value = "Value";
-        fakeWebContext.RequestForm.Add(keyInvalid, value);
+        fakeWebContext.RequestForm.SafeSet(keyInvalid, value);
 
         string result = fakeWebContext.GetRequestParameter(key);
 

VAR.WebFormsCore.Tests/Controls/ButtonTests.cs

@@ -1,3 +1,4 @@
+using VAR.WebFormsCore.Code;
 using VAR.WebFormsCore.Controls;
 using VAR.WebFormsCore.Pages;
 using VAR.WebFormsCore.Tests.Fakes;
@@ -56,7 +57,7 @@ public class ButtonTests
         button.Click += (o, _) => { result = (o as Button)?.CommandArgument; };
         page.Controls.Add(button);
 
-        fakeWebContext.RequestForm.Add(button.ClientID, "Clicked");
+        fakeWebContext.RequestForm.SafeSet(button.ClientID, "Clicked");
         page.ProcessRequest(fakeWebContext);
 
         Assert.Equal(commandArgument, result);

VAR.WebFormsCore.Tests/Controls/CTextBoxTests.cs

@@ -1,3 +1,4 @@
+using VAR.WebFormsCore.Code;
 using VAR.WebFormsCore.Controls;
 using VAR.WebFormsCore.Pages;
 using VAR.WebFormsCore.Tests.Fakes;
@@ -94,7 +95,7 @@ public class CTextBoxTests
         page0.ProcessRequest(fakeWebContext0);
 
         FakeWebContext fakeWebContext1 = new(requestMethod: "POST");
-        fakeWebContext1.RequestForm.Add(cTextBox0.TxtContent.ClientID, changedValue);
+        fakeWebContext1.RequestForm.SafeSet(cTextBox0.TxtContent.ClientID, changedValue);
         Page page1 = new();
         CTextBox cTextBox1 = new() { Text = text };
         page1.Controls.Add(cTextBox1);
@@ -188,7 +189,7 @@ public class CTextBoxTests
         };
         page.Controls.Add(button);
 
-        fakeWebContext.RequestForm.Add(button.ClientID, "Clicked");
+        fakeWebContext.RequestForm.SafeSet(button.ClientID, "Clicked");
         page.ProcessRequest(fakeWebContext);
         int? resultHeight = cTextBox.GetClientsideHeight();
 
@@ -222,7 +223,7 @@ public class CTextBoxTests
         button.Click += (_, _) => { cTextBox.SetClientsideHeight(null); };
         page.Controls.Add(button);
 
-        fakeWebContext.RequestForm.Add(button.ClientID, "Clicked");
+        fakeWebContext.RequestForm.SafeSet(button.ClientID, "Clicked");
         page.ProcessRequest(fakeWebContext);
         int? resultHeight = cTextBox.GetClientsideHeight();
 
@@ -259,7 +260,7 @@ public class CTextBoxTests
         };
         page.Controls.Add(button);
 
-        fakeWebContext.RequestForm.Add(button.ClientID, "Clicked");
+        fakeWebContext.RequestForm.SafeSet(button.ClientID, "Clicked");
         page.ProcessRequest(fakeWebContext);
         int? resultHeight = cTextBox.GetClientsideHeight();
 
@@ -286,7 +287,7 @@ public class CTextBoxTests
         };
         page.Controls.Add(button);
 
-        fakeWebContext.RequestForm.Add(button.ClientID, "Clicked");
+        fakeWebContext.RequestForm.SafeSet(button.ClientID, "Clicked");
         page.ProcessRequest(fakeWebContext);
         int? resultHeight = cTextBox.GetClientsideHeight();
 

VAR.WebFormsCore.Tests/Controls/HiddenFieldTests.cs

@@ -1,3 +1,4 @@
+using VAR.WebFormsCore.Code;
 using VAR.WebFormsCore.Controls;
 using VAR.WebFormsCore.Pages;
 using VAR.WebFormsCore.Tests.Fakes;
@@ -51,7 +52,7 @@ public class HiddenFieldTests
         HiddenField hiddenField = new() { Value = value };
         page.Controls.Add(hiddenField);
 
-        fakeWebContext.RequestForm.Add(hiddenField.ClientID, changedValue);
+        fakeWebContext.RequestForm.SafeSet(hiddenField.ClientID, changedValue);
         page.ProcessRequest(fakeWebContext);
 
         Assert.Equal(changedValue, hiddenField.Value);

VAR.WebFormsCore.Tests/Controls/HtmlFormTests.cs

@@ -1,3 +1,4 @@
+using VAR.WebFormsCore.Code;
 using VAR.WebFormsCore.Controls;
 using VAR.WebFormsCore.Pages;
 using VAR.WebFormsCore.Tests.Fakes;
@@ -27,7 +28,7 @@ public class HtmlFormTests
     public void MustRenderCorrectly__WithQueryParameters()
     {
         FakeWebContext fakeWebContext = new();
-        fakeWebContext.RequestQuery.Add("test", "value");
+        fakeWebContext.RequestQuery.SafeSet("test", "value");
         Page page = new();
         HtmlForm htmlForm = new();
         page.Controls.Add(htmlForm);

VAR.WebFormsCore.Tests/Controls/TextBoxTests.cs

@@ -1,3 +1,4 @@
+using VAR.WebFormsCore.Code;
 using VAR.WebFormsCore.Controls;
 using VAR.WebFormsCore.Pages;
 using VAR.WebFormsCore.Tests.Fakes;
@@ -138,7 +139,7 @@ public class TextBoxTests
         TextBox textBox = new() { Text = text };
         page.Controls.Add(textBox);
 
-        fakeWebContext.RequestForm.Add(textBox.ClientID, changedValue);
+        fakeWebContext.RequestForm.SafeSet(textBox.ClientID, changedValue);
         page.ProcessRequest(fakeWebContext);
 
         Assert.Equal(changedValue, textBox.Text);

VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs

@@ -22,7 +22,7 @@ public class FakeWebContext : IWebContext
 
     public Dictionary<string, string?> RequestHeader { get; } = new();
 
-    public Dictionary<string, string> RequestCookies { get; } = new();
+    public Dictionary<string, string?> RequestCookies { get; } = new();
 
     public Dictionary<string, string?> RequestQuery { get; } = new();
 
@@ -32,7 +32,7 @@ public class FakeWebContext : IWebContext
     
     public long? RequestContentLength { get; }
 
-    public byte[]? RequestReadBin()
+    public byte[] RequestReadBin()
     {
         throw new NotImplementedException();
     }

VAR.WebFormsCore.Tests/Pages/FrmEchoTests.cs

@@ -1,3 +1,4 @@
+using VAR.WebFormsCore.Code;
 using VAR.WebFormsCore.Pages;
 using VAR.WebFormsCore.Tests.Fakes;
 using Xunit;
@@ -31,7 +32,7 @@ public class FrmEchoTests
     public void ProcessRequest__OneQueryParameterGet__FormData()
     {
         FakeWebContext fakeWebContext = new();
-        fakeWebContext.RequestQuery.Add("Test", "Value");
+        fakeWebContext.RequestQuery.SafeSet("Test", "Value");
         FrmEcho frmEcho = new();
 
         frmEcho.ProcessRequest(fakeWebContext);
@@ -53,7 +54,7 @@ public class FrmEchoTests
     public void ProcessRequest__OneFormParameterPost__FormData()
     {
         FakeWebContext fakeWebContext = new(requestMethod: "POST");
-        fakeWebContext.RequestForm.Add("Test", "Value");
+        fakeWebContext.RequestForm.SafeSet("Test", "Value");
         FrmEcho frmEcho = new();
 
         frmEcho.ProcessRequest(fakeWebContext);

VAR.WebFormsCore.Tests/Pages/PageCommonTests.cs

@@ -55,7 +55,7 @@ public class PageCommonTests
         (GlobalConfig.Get() as FakeGlobalConfig)?.FakeSetLoginHandler(loginHandler);
         (GlobalConfig.Get() as FakeGlobalConfig)?.FakeSetAuthenticated(true);
         FakeWebContext fakeWebContext = new(requestMethod: "POST");
-        fakeWebContext.RequestForm.Add("ctl00_ctl02_btnLogout", "Logout");
+        fakeWebContext.RequestForm.SafeSet("ctl00_ctl02_btnLogout", "Logout");
         TestEmptyForm testEmptyForm = new(mustBeAuthenticated: true);
 
         testEmptyForm.ProcessRequest(fakeWebContext);

VAR.WebFormsCore/Code/ExtensionMethods.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Text;
 using VAR.Json;
 
@@ -11,21 +12,15 @@ public static class ExtensionMethods
     {
         if (context.RequestMethod == "POST")
         {
-            foreach (string key in context.RequestForm.Keys)
+            if (context.RequestForm.ContainsKey(parameter))
             {
-                if (string.IsNullOrEmpty(key) == false && key == parameter)
+                return context.RequestForm.SafeGet(parameter, null) ?? string.Empty;
-                {
-                    return context.RequestForm[key] ?? string.Empty;
-                }
             }
         }
         
-        foreach (string key in context.RequestQuery.Keys)
+        if (context.RequestQuery.ContainsKey(parameter))
         {
-            if (string.IsNullOrEmpty(key) == false && key == parameter)
+            return context.RequestQuery.SafeGet(parameter, null) ?? string.Empty;
-            {
-                return context.RequestQuery[key] ?? string.Empty;
-            }
         }
         
         return string.Empty;
@@ -42,4 +37,23 @@ public static class ExtensionMethods
     }
 
     #endregion IWebContext
+    
+    #region Dictionary
+
+    public static TValue? SafeGet<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, TValue defaultValue)
+    {
+        return dictionary.TryGetValue(key, out TValue? value) ? value : defaultValue;
+    }
+
+    public static void SafeSet<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, TValue value)
+    {
+        dictionary[key] = value;
+    }
+
+    public static void SafeRemove<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key)
+    {
+        dictionary.Remove(key);
+    }
+    
+    #endregion Dictionary
 }

VAR.WebFormsCore/Code/IWebContext.cs

@@ -7,8 +7,9 @@ public interface IWebContext
 {
     string RequestPath { get; }
     string RequestMethod { get; }
+    
     Dictionary<string, string?> RequestHeader { get; }
-    Dictionary<string, string> RequestCookies { get; }
+    Dictionary<string, string?> RequestCookies { get; }
     Dictionary<string, string?> RequestQuery { get; }
     Dictionary<string, string?> RequestForm { get; }