windows phone 7 中,如何让listbox滚动到底部,显示最下面一项,我要做一个聊天列表.....

连接两个村庄 connecting 2 villages
和。。。有关 related with …..
把城市和村庄连上 connect a city with a village
朝着某人大喊 shout at sb
在森林里寻找羊 look for a goat/goats in the forest
发出另一个噪音 make one more noise
在一两秒内 in one or two seconds
开始传播的更快更远 start to radiate faster and quicker
请求帮助 ask for help
等待某人做某事 wait for sb to do sth
在门口等我 wait me at the door
做。。。的好处 the benefit for doing sth
在网上聊天的坏处 badness for website chattingg
等一会 wait a minute
接电话 answer the phone
庆祝父亲节 celebrate Father’s day
六月的第三个星期天 the 3rd Sunday of June
跟他们的妈妈说谢谢 say thanks to their mother
一个活着的人 a live person
为他们的妈妈做一顿特殊的早餐 make a special breakfast for their mother
母亲节为我的妈妈买东西 buy stuff for my mom for Mother’s day
他们两个并非都 not both of them are
他们两个都不 neither of them is
他们三个并非都 not all of them three are
他们三个都不 none of them three is
世界上绝大部分的国家 majority of the countries in the world
帮我学习怎样使用它 help me to learn how to use it
按哪个按钮 push which button
收到他的一个答复 get one answer from him
电话没联系上他 can’t get in touch with him by phone
想要做某事 want to do sth / would like to do sth.
最重要的机器 the most important machine
互相学习 learn from each other
和每个人联系 contact everybody
同意某人agree with sb
选择哪一个 which one would you choose
选择做某事 choose to do sth
错过做某事 miss doing sth
在因特网上搜寻信息 search information through internet
在17世纪 in 17th century
谁出过国 who ever went abroad?
你曾经出过国吗？Did you ever go abroad?
他出国两年了？ He’s been abroad for 2 years.
他出国了 he went abroad.
他现在在国外 he’s now abroad.
讲许法语 speak French
希望精将来某一天拜访他 expect General Jing to visit him someday
希望谋人做某事 expect sb to do sth
靠电话联系 contact through phone calls
环游世界 travel around the world
了解许多事实 get to know many facts
过去某一天 someday in the past
截止到2050年 till 2050
截止到去年底 by the end of last year
生活在陆地 live on the land
世界上最干旱的大陆 the driest land in the world
三分之一的土地 one third earth
指向 point to
并不是所有的土地 not all earth
地球表面的四分之三 three fourth of the earth surface
覆盖地球表面的百分之二十 cover 20% of the earth surface
由。。。组成的 composed by
增长的快 quick growth
世界上第五长河 the 5th long river in the world
在中国东南部 the Southeast in China
在最后 at last/ finally
在8月末 end of August
截止到2月末 by the end of Feb
在面积上和人口上 from the respects of size and population
回家 go home
一张世界地图 a world map
世界上一半多的人口 half population in the world
访问外国 visit other countries
写一个关于亚洲的报告 write a report on Asia
德国学生 German student
讲德语 speak German
用德语 use German
几个德国人 some Germans
欧洲的最长河 the longest river in Europe
进展顺利 develop smoothly
学地理最好的方法 best way to learn geography
在地理课上 in the class of geography
在地球上 on the earth
在海岸线上 along the coastline
一本关于历史的书 a book on history
在会上发言 speak in the meeting
给某人买（取）某物 buy/get sth for sb
一个关于亚洲的报告 a report on Asia
欧洲的国家 European countries
不断地想你的报告 keep thinking about your report
谢谢你的帮助 thanks for your help
做了一个关于欧洲的报告 give a report on Europe
一个长着长头发的女孩 a girl with long hair
在这条路的尽头 at the end of this road
最好的办法是出国 the best way is to go abroad
我希望这样 I hope so.
拯救世界 save the world
救某人的命 save sb
救了双胞胎的命 save the twin
节约用水和纸 save the usage of water and paper
把它捡起来 pick it up
把垃圾取出来 pick up the waste
把它从书包里取出来 pick it from the schoolbag
把它扔了 throw it away
制造最少的垃圾 produce minimum waste
制造最多的垃圾 produce maximum waste
制造较少的污染 produce less pollution
污染环境 pollute the environment
使我们的环境干净 clean our environment
向我们解释这个计划explain this plan to us
非常累 very tired
一点也不累 not tired at all
一点垃圾 a few waste
有点胖 a little bit fat
开始工作 start to work
入党三年 join Communist Party 3 years ago
加入环保俱乐部 join the environment protection club
和我们一起工作 work with us
参加运动会 participate in an athletic meeting
对付。处置 deal with…
北美洲的学生 students from North America
把它关了 close it
在午饭的时候 in lunch time
给某人奖励 reward sb
上学乘车 take a bus to go to school
浪费二十到四十升的水 20-40 litres water wasted
把两袋垃圾倒在地上 pour 2 bags of waste on the ground
一个空盒子 an empty box
帮你给它分类 classify it for you
百分之九十的包装 90% of the package
如此多的垃圾 so much waste
装满十辆卡车 10 full trucks
哪种自行车 which bike is
哪几种自行车 which bikes are
把垃圾带到学校来 take garbage to school
带上雨伞 take an umbrella
把这些东西分成纸，塑料 separate them by paper and plastic
别的什么 anything else
相当于一辆小汽车的重量 equal to the weight of a car
塑料比纸多 more plastic than paper
金属比玻璃少 less metal than glass
能被在使用或回收 can be reused or recycled
能被做成新的玻璃 can be made into new glass
浪费东西是不对的 it’s wrong to waste things
把它带回家 take it home
各种各样的交通方式 various means of transportation
尽量不浪费水 try best not to waste water
尝试许多方式少使用水 try many ways to use less water
第二天 the next day
一个有坏轮子的玩具 a toy with a bad wheel
用垃圾做一辆车 made a car with garbage
绝大部分的垃圾 most of the garbage
在小区周围散步 walk around a block
修理手表 repair watches
10公斤的塑料 plastic weighted 10 kg
浪费纸最多 waste maximum paper

public void MoveNowChatMsgList()
{
//获取listbox的子类型ScrollViewer
System.Windows.Controls.ScrollViewer scrollViewer = FindChildOfType(NowChatMsgList);//ScrollViewer scrollBar
if (scrollViewer == null)
{
throw new InvalidOperationException("erro");
}
else
{
//判断当前滚动的高度是否大于或者等于scrollViewer实际可滚动高度，如果等于或者大于就证明到底了
if (!(scrollViewer.VerticalOffset >= scrollViewer.ScrollableHeight))
{
scrollViewer.ScrollToVerticalOffset(scrollViewer.ScrollableHeight+200);
}
}
}

//获取子类型
static T FindChildOfType(DependencyObject root) where T : class
{
var queue = new Queue();
queue.Enqueue(root);

while (queue.Count > 0)
{
DependencyObject current = queue.Dequeue();
for (int i = VisualTreeHelper.GetChildrenCount(current) - 1; 0 <= i; i--)
{
var child = VisualTreeHelper.GetChild(current, i);
var typedChild = child as T;
if (typedChild != null)
{
return typedChild;
}
queue.Enqueue(child);
}
}
return null;
}