improve datagrid col output

samples/Sample.Core/Pages/DataGrid/Examples/Basic.razor

@@ -38,10 +38,10 @@
                 <a href="#" class="d-block" title="@item.FullName">@item.Id</a>
             </Template>
         </DataColumn>
-        <DataColumn TItem="Person" Property="p => p.FirstName" SortIndex="1" />
-        <DataColumn TItem="Person" Property="p => p.LastName" SortIndex="0" />
+        <DataColumn TItem="Person" Property="p => p.FirstName" SortIndex="1" ColumnStyle="min-width: 200px" />
+        <DataColumn TItem="Person" Property="p => p.LastName" SortIndex="0" ColumnStyle="min-width: 200px"/>
         <DataColumn TItem="Person" Property="p => p.Score" Width="120px" Style="@SoreStyle" />
-        <DataColumn TItem="Person" Property="p => p.Location" Sortable="false" />
+        <DataColumn TItem="Person" Property="p => p.Location" ColumnStyle="min-width: 200px" Sortable="false" />
         <DataColumn TItem="Person" Property="p => p.Birthday" Width="110px" Format="d" />
     </DataColumns>
     <DataPagination Context="grid">

src/LoreSoft.Blazor.Controls/Data/DataColumn.cs

@@ -3,6 +3,7 @@
 using System.Reflection;
 
 using LoreSoft.Blazor.Controls.Extensions;
+using LoreSoft.Blazor.Controls.Utilities;
 
 using Microsoft.AspNetCore.Components;
 
@@ -46,6 +47,13 @@ public class DataColumn<TItem> : ComponentBase
     public string FooterClass { get; set; }
 
 
+    [Parameter]
+    public string ColumnClass { get; set; }
+
+    [Parameter]
+    public string ColumnStyle { get; set; }
+
+
     [Parameter]
     public bool Sortable { get; set; } = true;
 
@@ -83,6 +91,7 @@ public class DataColumn<TItem> : ComponentBase
 
     internal bool CurrentSortDescending { get; set; }
 
+    internal string CurrentColumnStyle { get; set; }
 
     protected override void OnInitialized()
     {
@@ -103,6 +112,11 @@ protected override void OnParametersSet()
     {
         base.OnParametersSet();
 
+        CurrentColumnStyle = new StyleBuilder()
+            .AddStyle(ColumnStyle)
+            .AddStyle("width", Width, (v) => v.HasValue())
+            .ToString();
+
         UpdateProperty();
     }
 

src/LoreSoft.Blazor.Controls/Data/DataGrid.razor

@@ -30,14 +30,8 @@
                     }
                     @foreach (var column in VisibleColumns)
                     {
-                        if (string.IsNullOrEmpty(column.Width))
-                        {
-                            <col />
-                        }
-                        else
-                        {
-                            <col style="width: @column.Width" />
-                        }
+                        <col class="@column.ColumnClass"
+                             style="@column.CurrentColumnStyle" />
                     }
                 </colgroup>
                 <thead>

src/LoreSoft.Blazor.Controls/Utilities/DelayedAction.cs

@@ -0,0 +1,105 @@
+namespace LoreSoft.Blazor.Controls.Utilities;
+
+// https://www.meziantou.net/debouncing-throttling-javascript-events-in-a-blazor-application.htm
+public static class DelayedAction
+{
+    public static readonly TimeSpan DefaultDelay = TimeSpan.FromMilliseconds(800);
+
+    public static Action Debounce(this Action action, TimeSpan? interval = null)
+    {
+        ArgumentNullException.ThrowIfNull(action);
+
+        var delay = interval ?? DefaultDelay;
+        var last = 0;
+
+        return () =>
+        {
+            var current = Interlocked.Increment(ref last);
+            Task.Delay(delay)
+                .ContinueWith(_ =>
+                {
+                    if (current == last)
+                        action();
+                });
+        };
+    }
+
+    public static Action<T> Debounce<T>(this Action<T> action, TimeSpan? interval = null)
+    {
+        ArgumentNullException.ThrowIfNull(action);
+
+        var delay = interval ?? DefaultDelay;
+        var last = 0;
+
+        return arg =>
+        {
+            var current = Interlocked.Increment(ref last);
+            Task.Delay(delay)
+                .ContinueWith(_ =>
+                {
+                    if (current == last)
+                        action(arg);
+                });
+        };
+    }
+
+    public static Action Throttle(this Action action, TimeSpan? interval = null)
+    {
+        ArgumentNullException.ThrowIfNull(action);
+
+        var delay = interval ?? DefaultDelay;
+
+        Task? task = null;
+        var l = new object();
+
+        return () =>
+        {
+            if (task != null)
+                return;
+
+            lock (l)
+            {
+                if (task != null)
+                    return;
+
+                task = Task.Delay(delay)
+                    .ContinueWith(_ =>
+                    {
+                        action();
+                        task = null;
+                    });
+            }
+        };
+    }
+
+    public static Action<T> Throttle<T>(this Action<T> action, TimeSpan? interval = null)
+    {
+        ArgumentNullException.ThrowIfNull(action);
+
+        var delay = interval ?? DefaultDelay;
+
+        Task? task = null;
+        var l = new object();
+        T? args = default;
+
+        return (T arg) =>
+        {
+            args = arg;
+            if (task != null)
+                return;
+
+            lock (l)
+            {
+                if (task != null)
+                    return;
+
+                task = Task.Delay(delay)
+                    .ContinueWith(_ =>
+                    {
+                        action(args);
+                        task = null;
+                    });
+            }
+        };
+    }
+}