diff --git a/Bin/SunnyUI.dll b/Bin/SunnyUI.dll
index ce0a0b54..263c45c6 100644
Binary files a/Bin/SunnyUI.dll and b/Bin/SunnyUI.dll differ
diff --git a/Bin/SunnyUI.pdb b/Bin/SunnyUI.pdb
index 35958b06..2ccffad7 100644
Binary files a/Bin/SunnyUI.pdb and b/Bin/SunnyUI.pdb differ
diff --git a/README.md b/README.md
index 8bc78ab6..88a3d7cb 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,8 @@
 
 #### 介绍
 - SunnyUI.Net, 基于 C# .Net WinForm 开源控件库、工具类库、扩展类库、多页面开发框架
+- 源码编译环境：VS2019
+- 动态库应用环境：VS2010，.Net Framework 4.0及以上
 
 #### 软件框架
 ![思维导图](https://images.gitee.com/uploads/images/2020/0518/223455_88a12732_416720.png "中心主题.png")
diff --git a/SunnyUI.Demo/Bin/SunnyUI.Demo.exe b/SunnyUI.Demo/Bin/SunnyUI.Demo.exe
index 358c5569..0ccfc3d1 100644
Binary files a/SunnyUI.Demo/Bin/SunnyUI.Demo.exe and b/SunnyUI.Demo/Bin/SunnyUI.Demo.exe differ
diff --git a/SunnyUI.Demo/Bin/SunnyUI.dll b/SunnyUI.Demo/Bin/SunnyUI.dll
index ce0a0b54..263c45c6 100644
Binary files a/SunnyUI.Demo/Bin/SunnyUI.dll and b/SunnyUI.Demo/Bin/SunnyUI.dll differ
diff --git a/SunnyUI.Demo/Forms/FDialogs.cs b/SunnyUI.Demo/Forms/FDialogs.cs
index 9b9d1c86..20ee1d17 100644
--- a/SunnyUI.Demo/Forms/FDialogs.cs
+++ b/SunnyUI.Demo/Forms/FDialogs.cs
@@ -1,6 +1,6 @@
-using System;
+using Sunny.UI.Demo.Forms;
+using System;
 using System.Collections.Generic;
-using Sunny.UI.Demo.Forms;
 
 namespace Sunny.UI.Demo
 {
@@ -15,11 +15,11 @@ namespace Sunny.UI.Demo
         {
             if (this.ShowAskDialog("确认信息提示框"))
             {
-                this.ShowInfoDialog("您点击了确定按钮");
+               UIMessageTip.ShowOk("您点击了确定按钮");
             }
             else
             {
-                this.ShowErrorDialog("您点击了取消按钮");
+                UIMessageTip.ShowError("您点击了取消按钮");
             }
         }
 
diff --git a/SunnyUI.Demo/Forms/FLogin.Designer.cs b/SunnyUI.Demo/Forms/FLogin.Designer.cs
index c9754aa3..1efa3009 100644
--- a/SunnyUI.Demo/Forms/FLogin.Designer.cs
+++ b/SunnyUI.Demo/Forms/FLogin.Designer.cs
@@ -41,7 +41,7 @@
             // 
             this.pictureBox1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(171)))), ((int)(((byte)(208)))), ((int)(((byte)(250)))));
             this.pictureBox1.Image = global::Sunny.UI.Demo.Properties.Resources.SunnyLogin;
-            this.pictureBox1.Location = new System.Drawing.Point(183, 212);
+            this.pictureBox1.Location = new System.Drawing.Point(180, 208);
             this.pictureBox1.Name = "pictureBox1";
             this.pictureBox1.Size = new System.Drawing.Size(71, 71);
             this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
diff --git a/SunnyUI/Forms/UIFormHelper.cs b/SunnyUI/Forms/UIFormHelper.cs
index f1a61cb8..1cc1a6c7 100644
--- a/SunnyUI/Forms/UIFormHelper.cs
+++ b/SunnyUI/Forms/UIFormHelper.cs
@@ -379,12 +379,8 @@ namespace Sunny.UI
             frm.Style = style;
             frm.SetItems(items);
             frm.SelectedIndex = selectIndex;
-            if (title.IsValid())
-            {
-                frm.Title = title;
-            }
-
-            frm.Description = description;
+            if (title.IsValid()) frm.Title = title;
+            if (description.IsValid()) frm.Description = description;
             frm.ShowDialog();
 
             bool result = frm.IsOK;
diff --git a/SunnyUI/Forms/UIMessageForm.Designer.cs b/SunnyUI/Forms/UIMessageForm.Designer.cs
index ae856de3..50f001af 100644
--- a/SunnyUI/Forms/UIMessageForm.Designer.cs
+++ b/SunnyUI/Forms/UIMessageForm.Designer.cs
@@ -97,7 +97,6 @@
             this.ShowIcon = false;
             this.ShowInTaskbar = false;
             this.Text = "UIMsgBox";
-            this.TopMost = true;
             this.ResumeLayout(false);
 
         }
diff --git a/SunnyUI/Forms/UIMessageForm.cs b/SunnyUI/Forms/UIMessageForm.cs
index df5a7c37..324f47df 100644
--- a/SunnyUI/Forms/UIMessageForm.cs
+++ b/SunnyUI/Forms/UIMessageForm.cs
@@ -120,8 +120,6 @@ namespace Sunny.UI
                 lbMsg.BackColor = BackColor;
                 lbMsg.SelectionColor = RectColor;
             }
-
-            Invalidate();
         }
 
         private void btnOK_MouseEnter(object sender, EventArgs e)
diff --git a/Updates.txt b/Updates.txt
index af1e2d50..3a124854 100644
--- a/Updates.txt
+++ b/Updates.txt
@@ -2,6 +2,7 @@
 
 2020.06.21
 + UILoginForm����¼������������ͼƬ
+* UIMessageForm�������Demo��Ϣ���ڵ���������ˢ����˸��Bug
 
 2020.06.20
 + UILoginForm�����ӵ�¼����