优化更新代码，添加界面功能并整合

WPFluent/Controls/GridView/GridViewRowPresenter.cs

@@ -0,0 +1,40 @@
+
+
+
+// ReSharper disable once CheckNamespace
+namespace WPFluent.Controls;
+
+/// <summary>
+/// Extends <see cref="System.Windows.Controls.GridViewRowPresenter"/>, and adds header row layout support for <see
+/// cref="GridViewColumn"/>, which can have <see cref="GridViewColumn.MinWidth"/> and <see
+/// cref="GridViewColumn.MaxWidth"/>.
+/// </summary>
+public class GridViewRowPresenter : System.Windows.Controls.GridViewRowPresenter
+{
+    protected override Size ArrangeOverride(Size arrangeSize)
+    {
+        // update the desired width of each column (clamps desiredwidth to MinWidth and MaxWidth)
+        if(Columns != null)
+        {
+            foreach(GridViewColumn column in Columns.OfType<GridViewColumn>())
+            {
+                column.UpdateDesiredWidth();
+            }
+        }
+
+        return base.ArrangeOverride(arrangeSize);
+    }
+
+    protected override Size MeasureOverride(Size constraint)
+    {
+        if(Columns != null)
+        {
+            foreach(GridViewColumn column in Columns.OfType<GridViewColumn>())
+            {
+                column.UpdateDesiredWidth();
+            }
+        }
+
+        return base.MeasureOverride(constraint);
+    }
+}