support for .NET framework 3.5

Still have bugs

Net35/HandyControl_Net35/Controls/Time/TimeBar/SpeTextBlock.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Windows.Controls;
+
+
+namespace HandyControl.Controls
+{
+    /// <summary>
+    ///     作为刻度使用的文字块
+    /// </summary>
+    internal class SpeTextBlock : TextBlock
+    {
+        public double X { get; set; }
+
+        public SpeTextBlock() => Width = 60;
+
+        public SpeTextBlock(double x) : this()
+        {
+            X = x;
+            Canvas.SetLeft(this, X);
+        }
+
+        /// <summary>
+        ///     时间
+        /// </summary>
+        private DateTime _time;
+
+        /// <summary>
+        ///     时间
+        /// </summary>
+        public DateTime Time
+        {
+            get => _time;
+            set
+            {
+                _time = value;
+                Text = $"{value.ToString(TimeFormat)}\r\n|";
+            }
+        }
+
+        /// <summary>
+        ///     时间格式
+        /// </summary>
+        public string TimeFormat { get; set; } = "HH:mm";
+
+        /// <summary>
+        ///     横向移动
+        /// </summary>
+        /// <param name="offsetX"></param>
+        public void MoveX(double offsetX) => Canvas.SetLeft(this, X + offsetX);
+    }
+}