[原创] MessageLine控件, 告别MessageBox的烦扰

[Original] MessageLine : Say Goodbye to MessageBox

 

Vancee@博客园 原创     转载请注明原文链接:http://www.cnblogs.com/vancee/archive/2012/08/15/2639099.html

 

1. I hate MessageBox, indeed. And you?

 

有木有觉得程序中经常弹出的MessageBox很烦? 至少我很讨厌这个,  所以自己写了一个MessageLine控件取代MessageBox.

2. MessageLine 控件关键属性

a. PreTitle : string, MessageLine的标题;
b. MessageBody : string,  MessageLine的消息内容;  (使用的时候最好双向绑定)
c. Duration: uint, 每条消息显示的时间;

效果图:

3.MessageLine 源码

a. *.cs file:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Controls;
using System.Windows;
using System.Windows.Threading;

namespace Vancee.Control
{
    class MessageLine : Control
    {
        public MessageLine()
        {
            tmr.Tick += new EventHandler(tmr_Tick);
            tmr.Stop();
        }

        /// <summary>
        /// 消息产生的时间
        /// </summary>
        private static DateTime _messageCreatedTime = DateTime.MinValue;

        /// <summary>
        ///  定时器(Interval = 0.1s)
        /// </summary>
        static DispatcherTimer tmr = new DispatcherTimer() { Interval = TimeSpan.FromMilliseconds(100) };
        private void tmr_Tick(object sender, EventArgs e)
        {
            // 超过定时
            if (DateTime.Now - _messageCreatedTime > TimeSpan.FromSeconds(Duration))
            {
                tmr.Stop();
                MessageBody = "";
                _messageCreatedTime = DateTime.MinValue;
            }
        }


        /// <summary>
        /// MessageLine 标题
        /// </summary>
        public string PreTitle
        {
            get { return (string)GetValue(PreTitleProperty); }
            set { SetValue(PreTitleProperty, value); }
        }
        public static readonly DependencyProperty PreTitleProperty =
            DependencyProperty.Register("PreTitle", typeof(string), typeof(MessageLine), null);


        /// <summary>
        /// 消息正文(此属性外部需要TwoWay绑定)
        /// </summary>
        public string MessageBody
        {
            get { return (string)GetValue(MessageBodyProperty); }
            set
            {
                SetValue(MessageBodyProperty, value);
            }
        }
        public static readonly DependencyProperty MessageBodyProperty =
            DependencyProperty.Register("MessageBody", typeof(string), typeof(MessageLine), null, new ValidateValueCallback(OnMessageChanged));

        static bool OnMessageChanged(object value)
        {
            var msg = value as string;
            if (msg != "")
            {
                _messageCreatedTime = DateTime.Now;
                tmr.Start();
            }
            return true;
        }


        /// <summary>
        /// MessageBody显示时间长度
        /// </summary>
        public int Duration
        {
            get { return (int)GetValue(DurationProperty); }
            set { SetValue(DurationProperty, value); }
        }
        public static readonly DependencyProperty DurationProperty =
            DependencyProperty.Register("Duration", typeof(int), typeof(MessageLine), null);
    }
}

b. *.xmal file:

<ControlTemplate x:Key="MessageLine" TargetType="{x:Type Vancee_Control:MessageLine}">
        <Grid d:IsLocked="True">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <TextBlock x:Name="txtPreTitle" TextWrapping="Wrap" d:LayoutOverrides="Height" MinWidth="100" Text="{TemplateBinding PreTitle}" Foreground="Gray" d:IsLocked="True"/>
            <TextBlock x:Name="txtMessageBody" TextWrapping="Wrap" Text="{TemplateBinding MessageBody}" d:LayoutOverrides="Height" Grid.ColumnSpan="1" Grid.Column="1" MinWidth="100" d:IsLocked="True"/>
        </Grid>
    </ControlTemplate>

Vancee@博客园 原创 转载请注明原文链接:http://www.cnblogs.com/vancee/archive/2012/08/15/2639099.html