我是新来的WPF和尝试这样的事情来更新类中的WPF窗体中的标签文本。 onChange事件是越来越触发,但形式wpf标签文本绑定不工作,我错了
这里就没有得到显示的是我的课
Public Class ExtractDetails
Inherits UserControl
Implements INotifyPropertyChanged
Private _prdFrstName as string
Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged
Public Property PrdFrstName() As String
Get
Return _prdFrstName
End Get
Set(ByVal value As String)
If _prdFrstName <> value Then
_prdFrstName = value
Me.OnPropertyChanged("PrdFrstName")
End If
End Set
End Property
Public Sub suMainStrt()
PrdFrstName = strComurl ''contyains teh URL to nagigate to
webBrwFrst = New WebBrowser
webBrwFrst.Navigate(New Uri(strComurl))
Call extract(webBrwFrst, strComurl)
end sub
末级
网址不断改变,因为我是个从Excel获取值文件和循环每个URL。 我想显示当前正在使用的URL现在
这是我的XAML
<Window x:Class="Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Avenet Prduct Description Extractor" Height="396.627" Width="588.123" Background="AliceBlue" Icon="LGIcon.ico">
<Grid Height="341.077" Width="567.721" Background="AliceBlue">
<StackPanel Margin="170.225,226.418,3.143,0" Name="StackPanel1" Height="97.994" VerticalAlignment="Top">
<Label Height="30.906" Name="lblCrntSt1" Content="{Binding Path=PrdFrstName, UpdateSourceTrigger=PropertyChanged}" Width="161" BorderThickness="2" BorderBrush="AliceBlue" Background="Red" Foreground="White" FontSize="13"></Label>
</StackPanel>
</Grid>
,这是我的窗口类。
Class Window1
Dim clsIniti As New ExtractDetails
Public Sub New()
' This call is required by the Windows Form Designer.
InitializeComponent()
'clsIniti = New ExtractDetails
Me.DataContext = clsIniti
End Sub
end class
没有更新文本标签整个功能运行良好。但我希望展示一些东西。我出错的地方
我尝试通过删除少量零件到新创建的项目来进行数据绑定。它在那里工作。所以在这段代码中有一些错误? :`(
你的strComurl是如何设置的?或者如何调用subMainStrt函数? – Manish 2013-02-25 07:48:07
这个mainstrt函数在按钮上点击调用 – 2013-02-25 11:08:17