refacotr(module: space): Add space string constants (#4263)

* Add string constants for space size

* Add align constants

* Update docs

components/space/Space.razor.cs

@@ -71,11 +71,11 @@ namespace AntDesign
 
         private readonly IList<SpaceItem> _items = new List<SpaceItem>();
 
-        private bool HasAlign => Align.IsIn("start", "end", "center", "baseline");
+        private bool HasAlign => Align.IsIn(SpaceAlign.Start, SpaceAlign.End, SpaceAlign.Center, SpaceAlign.Baseline);
 
         private const string PrefixCls = "ant-space";
 
-        private OneOf<string, (string, string)> _size = "small";
+        private OneOf<string, (string, string)> _size = SpaceSize.Small;
 
         private string InnerStyle => Wrap && Direction == DirectionVHType.Horizontal ? "flex-wrap: wrap;" : "";
 

components/space/SpaceItem.razor.cs

@@ -23,9 +23,9 @@ namespace AntDesign
 
         private static readonly Dictionary<string, string> _spaceSize = new()
         {
-            ["small"] = "8",
-            ["middle"] = "16",
-            ["large"] = "24"
+            [SpaceSize.Small] = "8",
+            [SpaceSize.Middle] = "16",
+            [SpaceSize.Large] = "24"
         };
 
         private string _marginStyle = "";

components/space/types/SpaceAlign.cs

@@ -0,0 +1,14 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace AntDesign
+{
+    public sealed class SpaceAlign
+    {
+        public static readonly string Start = "start";
+        public static readonly string End = "end";
+        public static readonly string Center = "center";
+        public static readonly string Baseline = "baseline";
+    }
+}

components/space/types/SpaceSize.cs

@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace AntDesign
+{
+    public sealed class SpaceSize
+    {
+        public static readonly string Small = "small";
+        public static readonly string Middle = "middle";
+        public static readonly string Large = "large";
+    }
+}

site/AntDesign.Docs/Demos/Components/Space/demo/Align.razor

@@ -1,6 +1,6 @@
 <div class="space-align-container">
     <div class="space-align-block">
-        <Space Align="center">
+        <Space Align="@SpaceAlign.Center">
             <SpaceItem>
                 center
             </SpaceItem>
@@ -13,7 +13,7 @@
         </Space>
     </div>
     <div class="space-align-block">
-        <Space Align="start">
+        <Space Align="@SpaceAlign.Start">
             <SpaceItem>
                 start
             </SpaceItem>
@@ -26,7 +26,7 @@
         </Space>
     </div>
     <div class="space-align-block">
-        <Space Align="end">
+        <Space Align="@SpaceAlign.End">
             <SpaceItem>
                 end
                 <Button Type="primary">Primary</Button>
@@ -37,7 +37,7 @@
         </Space>
     </div>
     <div class="space-align-block">
-        <Space Align="baseline">
+        <Space Align="@SpaceAlign.Baseline">
             <SpaceItem>
                 baseline
                 <Button Type="primary">Primary</Button>

site/AntDesign.Docs/Demos/Components/Space/demo/Size.razor

@@ -1,7 +1,7 @@
 <RadioGroup @bind-Value=@size OnChange="e=> setSize(e)" TValue="string">
-    <Radio Value="@("small")">Small</Radio>
-    <Radio Value="@("middle")">Middle</Radio>
-    <Radio Value="@("large")">Large</Radio>
+    <Radio Value="@SpaceSize.Small">Small</Radio>
+    <Radio Value="@SpaceSize.Middle">Middle</Radio>
+    <Radio Value="@SpaceSize.Large">Large</Radio>
 </RadioGroup>
 <br />
 <br />
@@ -21,7 +21,7 @@
 </Space>
 
 @code {
-    string size = "small";
+    string size = SpaceSize.Small;
     void setSize(string value)
     {
         size = value;