初步完成邮件功能

DMS.WPF/Views/Dialogs/EmailAccountDialog.xaml.cs

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+using DMS.WPF.ViewModels.Dialogs;
+using DMS.WPF.Helper;
+using iNKORE.UI.WPF.Modern.Controls;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace DMS.WPF.Views.Dialogs
+{
+    /// <summary>
+    /// EmailAccountDialog.xaml 的交互逻辑
+    /// </summary>
+    public partial class EmailAccountDialog : ContentDialog
+    {
+        private const int ContentAreaMaxWidth = 1000;
+        private const int ContentAreaMaxHeight = 800;
+
+        public EmailAccountDialog()
+        {
+            InitializeComponent();
+            this.Opened += OnOpened;
+            DataContextChanged += EmailAccountDialog_DataContextChanged;
+        }
+
+        private void OnOpened(ContentDialog sender, ContentDialogOpenedEventArgs args)
+        {
+            // 修改对话框内容区域的最大宽度和高度
+            var backgroundElementBorder = VisualTreeFinder.FindVisualChildByName<Border>(this, "BackgroundElement");
+            if (backgroundElementBorder != null)
+            {
+                backgroundElementBorder.MaxWidth = ContentAreaMaxWidth;
+                backgroundElementBorder.MaxHeight = ContentAreaMaxHeight;
+            }
+        }
+
+        private void EmailAccountDialog_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            if (DataContext is EmailAccountDialogViewModel viewModel)
+            {
+                // 处理密码框
+                PasswordBox.Password = viewModel.Password;
+                PasswordBox.PasswordChanged += (s, args) =>
+                {
+                    viewModel.Password = PasswordBox.Password;
+                };
+            }
+        }
+    }
+}