我有一个巨大的问题,不知道该怎么办。我正在编写一个C# WPF客户端。我的表单上有3个元素(文本框、密码框、按钮)。所以当人们填写文本框和密码框时,我想将我的按钮背景改为“活动(更改图像)”。类似于登录和密码。
private void eventhandler(object sender, RoutedEventArgs e)
{
if (login.Text.Length > 0 && password.Password.Length > 0)
{
ImageBrush myBrush = new ImageBrush();
myBrush.ImageSource =
new BitmapImage(new Uri("pack://application:,,,/Images/Enter Enabled.bmp", UriKind.Absolute));
Enter.Background = myBrush;
}
else if (login.Text.Length < 1 || password.Password.Length < 1)
{
ImageBrush myBrush = new ImageBrush();
myBrush.ImageSource =
new BitmapImage(new Uri("pack://application:,,,/Images/Enter Disabled.bmp", UriKind.Absolute));
Enter.Background = myBrush;
}
}
我有一段与C#相关的代码。它可以工作,但现在我遇到了一个问题。当我将鼠标悬停在按钮上时,它的背景会变回“禁用”状态。
Xaml
<Window x:Class="Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="250" Width="288" Background="#FF494949">
<Window.Resources>
<Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
<Setter Property="FocusVisualStyle">
<Setter.Value>
<Style>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="True" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Setter Property="Background" Value="#FFDDDDDD"/>
<Setter Property="BorderBrush" Value="#FF707070"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsDefaulted" Value="True">
<Setter Property="BorderBrush" TargetName="border" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="border">
<Setter.Value>
<ImageBrush ImageSource="Images/Enter Disabled.bmp"/>
</Setter.Value>
</Setter>
<Setter Property="BorderBrush" TargetName="border" Value="#FF3C7FB1"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" TargetName="border">
<Setter.Value>
<ImageBrush ImageSource="Images/Enter Pressed.bmp"/>
</Setter.Value>
</Setter>
<Setter Property="BorderBrush" TargetName="border" Value="#FF2C628B"/>
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Background" TargetName="border" Value="#FFBCDDEE"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FF245A83"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Background" TargetName="border" Value="#FFF4F4F4"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FFADB2B5"/>
<Setter Property="TextElement.Foreground" TargetName="contentPresenter" Value="#FF838383"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid Margin="0,0,2,-4.478">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0*"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Button HorizontalAlignment="Left" Name="Enter" Margin="46,92,0,0" VerticalAlignment="Top" Width="127" Height="27" Grid.Column="1" BorderThickness="0" Style="{DynamicResource ButtonStyle1}">
<Button.Background>
<ImageBrush ImageSource="Images/Enter Disabled.bmp"/>
</Button.Background>
</Button>
<TextBox Grid.ColumnSpan="2" Name="login" HorizontalAlignment="Left" Height="23" Margin="53,23,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120" TextChanged="eventhandler"/>
<PasswordBox Grid.ColumnSpan="2" Name="password" HorizontalAlignment="Left" Margin="53,59,0,0" VerticalAlignment="Top" Width="120" PasswordChanged="eventhandler"/>
</Grid>
我知道这是由于Mouseover图像画刷,但我如何在符合上述条件的C#代码中锁定它或更改它。
测试应用程序
我已经将测试应用程序上传到takebin。只需在文本框和密码框中填写文本并悬停在按钮上,您就会看到问题所在。
感谢所有回复和任何帮助。
this.SelectAll = new DelegateCommand(() => this.ApplySelection(this.resultsDataGridViewModel, true), this.CanApplySelection);
其中SelectAll
绑定到按钮的命令。 - memory of a dream