NumericRangeValidator: AllowNull (#1686)

* AllowNull range validator * Change comment * Add AllowNull test case * Fix test assertion * Update RadzenNumericRangeValidator.cs
radzenhq · Sep 11, 2024 · 3561062 · 3561062
1 parent 0566244
commit 3561062
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Showing 2 changed files with 21 additions and 2 deletions.
diff --git a/Radzen.Blazor.Tests/NumericRangeValidatorTests.cs b/Radzen.Blazor.Tests/NumericRangeValidatorTests.cs
@@ -60,6 +60,19 @@ public void Returns_False_If_Value_Is_Null()
 
             Assert.False(component.Instance.Validate(null));
         }
+        [Fact]
+        public void Returns_True_If_Value_Is_Null_And_AllowNull_Is_True()
+        {
+            using var ctx = new TestContext();
+            var component = ctx.RenderComponent<RadzenNumericRangeValidatorTestDouble>();
+
+            component.SetParametersAndRender(parameters =>
+            {
+                component.SetParametersAndRender(parameters => parameters.Add(p => p.Min, 0).Add(p => p.Max, 10).Add(p => p.AllowNull, true));
+            });
+
+            Assert.True(component.Instance.Validate(null));
+        }
 
         [Fact]
         public void Returns_False_If_Value_Overflows()

diff --git a/Radzen.Blazor/RadzenNumericRangeValidator.cs b/Radzen.Blazor/RadzenNumericRangeValidator.cs
@@ -42,6 +42,12 @@ public class RadzenNumericRangeValidator : ValidatorBase
         [Parameter]
         public IComparable Max { get; set; }
 
+        /// <summary>
+        /// Specifies if value can be null. If true, a null component value will be accepted.
+        /// </summary>
+        [Parameter]
+        public bool AllowNull { get; set; } = false;
+
         /// <inheritdoc />
         protected override bool Validate(IRadzenFormComponent component)
         {
@@ -54,7 +60,7 @@ protected override bool Validate(IRadzenFormComponent component)
 
             if (value == null)
             {
-                return false;
+                return AllowNull;
             }
 
 
@@ -91,4 +97,4 @@ private bool TryConvertToType(object value, Type type, out object convertedValue
             }
         }
     }
-}
+}