silverlight2.0Beta版TextBox输入中文解决方法


            新写一个TextBoxEx控件，继承于TextBox，并对TextBox的选择事件及字符改变事件做处理，以下是原代码 复制代码 代码如下:/************************************************************************/ /* 作者：覃小春 时间：20080826 说明：解决silverlightBeta2中TextBox中文输入问题 * blog:blog.csdn.net/colijian */ /************************************************************************/ using System.Windows; using System.Windows.Controls; namespace TextBoxEx { public class TextBoxEx:TextBox { #region 属性 private string _OldText = ""; private int _RecSelectStart = 0; private int _RecSelectLength = 0; #endregion public TextBoxEx() { TextChanged += new TextChangedEventHandler(TextBoxEx_TextChanged); SelectionChanged += new RoutedEventHandler(TextBoxEx_SelectionChanged); } void TextBoxEx_SelectionChanged(object sender, RoutedEventArgs e) { TextBox _sender = sender as TextBox; if (_sender == null) return; if (_sender.SelectionLength > 0) { //recode user select position _RecSelectLength = _sender.SelectionLength; _RecSelectStart = _sender.SelectionStart; } else { _RecSelectLength = 0; } } void TextBoxEx_TextChanged(object sender, TextChangedEventArgs e) { TextBox _sender = sender as TextBox; if (_sender == null) return; string textIfnor = _sender.Text; #region 除去先中部份 if (_RecSelectLength != 0) { _OldText = _OldText.Substring(0, _RecSelectStart) + _OldText.Substring(_RecSelectStart + _RecSelectLength, _OldText.Length - _RecSelectStart - _RecSelectLength); _RecSelectLength = 0; } #endregion int LengthAdd = textIfnor.Length - _OldText.Length; if (LengthAdd <= 0) { _OldText = _sender.Text; //这种情况是删除数据 return; } else if (LengthAdd % 2 == 0) { //如果当前是成双的情况下 //得到当前字符串 string AddInfor = textIfnor.Substring(_sender.SelectionStart - LengthAdd, LengthAdd); if (!AddInfor.Substring(0, AddInfor.Length / 2).Equals(AddInfor.Substring(AddInfor.Length / 2))) { _OldText = _sender.Text; return; } //得到实际新增值 AddInfor = AddInfor.Substring(0, AddInfor.Length / 2); //得到实际理论值 string DealText = textIfnor.Substring(0, _sender.SelectionStart - LengthAdd) + AddInfor + textIfnor.Substring(_sender.SelectionStart, textIfnor.Length - _sender.SelectionStart); int RecodeSelectSTart = _sender.SelectionStart - LengthAdd / 2; _sender.SelectionStart = 0; _sender.Text = DealText; _sender.SelectionStart = RecodeSelectSTart; _OldText = DealText; } else { _OldText = _sender.Text; } } } } 使用： 复制代码 代码如下:<UserControl x:Class="MutilTextBox.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:CT="clr-namespace:TextBoxEx;assembly=TextBoxEx" Width="400" Height="300"> <Grid x:Name="LayoutRoot" Background="White"> <Grid.RowDefinitions> <RowDefinition Height="50"></RowDefinition> <RowDefinition Height="50"></RowDefinition> <RowDefinition Height="50"></RowDefinition> <RowDefinition Height="50"></RowDefinition> </Grid.RowDefinitions> <TextBox x:Name="FirstTextBox" Text="first" Grid.Row="0" TextChanged="FirstTextBox_TextChanged"></TextBox> <CT:TextBoxEx x:Name="SecondTextBox" Grid.Row="1"></CT:TextBoxEx> <CT:TextBoxEx x:Name="ThreeTextBox" Grid.Row="2"></CT:TextBoxEx> <TextBox x:Name="Four" Grid.Row="3" ></TextBox> </Grid> </UserControl> 注意：要先加入名称空间，具体的值是： clr-namespace:名称空间全名;assembly=程序集名称 不清楚怎样上传程序集！否则将程序集上传 若发此控件有问题，或是不足，请给我留言