fix(Form): dynamic removal of text fields may result in an error when reseting the form (#602)

* 因reset需要重置表单内容,无法使用foreach进行遍历.修正表单内,动态增减input,Validatable发生不一致的异常

* 修正ResetValidation

* code review

Author: pigwing

src/Component/BlazorComponent/Components/Form/BForm.razor.cs

@@ -87,6 +87,11 @@ public void Register(IValidatable validatable)
             Validatables.Add(validatable);
         }
 
+        internal void Remove(IValidatable validatable)
+        {
+            Validatables.Remove(validatable);
+        }
+
         private async Task HandleOnSubmitAsync(EventArgs args)
         {
             var valid = Validate();
@@ -279,9 +284,9 @@ public void Reset()
         {
             EditContext?.MarkAsUnmodified();
 
-            foreach (var validatable in Validatables)
+            for (int i = 0; i < Validatables.Count; i++)
             {
-                validatable.Reset();
+                Validatables[i].Reset();
             }
 
             _ = UpdateValue(true);
@@ -291,9 +296,9 @@ public void ResetValidation()
         {
             EditContext?.MarkAsUnmodified();
 
-            foreach (var validatable in Validatables)
+            for (int i = 0; i < Validatables.Count; i++)
             {
-                validatable.ResetValidation();
+                Validatables[i].ResetValidation();
             }
 
             _ = UpdateValue(true);

src/Component/BlazorComponent/Components/Input/BInput.razor.Validatable.cs

@@ -517,6 +517,8 @@ protected override ValueTask DisposeAsyncCore()
                 EditContext.OnValidationStateChanged -= HandleOnValidationStateChanged;
             }
 
+            Form?.Remove(this);
+
             return base.DisposeAsyncCore();
         }
     }