Silverlight2.0beta version TextBox Input Chinese solution _ Practical Tips

Write a new Textboxex control that inherits from the TextBox and handles the selection events and character change events for the textbox, following the original code

Copy Code code as follows:

/************************************************************************/
/*
Author: Chung
Time: 20080826
Description: Solve the problem of Chinese input in textbox in SilverlightBeta2
* Blog:blog.csdn.net/colijian
*/
/************************************************************************/
Using System.Windows;
Using System.Windows.Controls;
Namespace Textboxex
{
public class Textboxex:textbox
{
#region Properties
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 get rid of the middle part first.
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;
This situation is to delete the data
Return
}
else if (lengthadd% 2 = 0)
{
If the current is in a double case
Get current string
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
}
Get the actual new value
addinfor = addinfor.substring (0, ADDINFOR.LENGTH/2);
Get the actual theoretical value
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;
}
}
}
}

Use:

Copy Code code as follows:

<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= "height=" >
<grid x:name= "LayoutRoot" background= "White" >
<Grid.RowDefinitions>
<rowdefinition height= "></RowDefinition>"
<rowdefinition height= "></RowDefinition>"
<rowdefinition height= "></RowDefinition>"
<rowdefinition height= "></RowDefinition>"
</Grid.RowDefinitions>
<textbox x:name= "Firsttextbox" text= "a" 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>

Note: To add a namespace first, the value is:
Clr-namespace: namespace full name; assembly= assembly name
Don't know how to upload an assembly! Otherwise upload the assembly
If there is a problem with this control, or not enough, please leave me a message