我从这里阅读了有关如何更改按钮背景图像文件的优秀建议：
How to change\set button background image in C# WPF code?
值得注意的是以下代码：
{% stylesheets filter='cssrewrite'
'assets/css/style.css'
%}
<link rel="stylesheet" type="text/css" href="{{ asset_url }}"/>
{% endstylesheets %}除了告诉视觉工作室，它还是一个“内容”文件和“始终复制”。
它似乎有效，但每当我的光标悬停在图像上时，图像就会消失。
如果我在xaml中指定图像文件，则不会发生此光标悬停问题。但是，我想要从C＃代码更改图像文件。
有任何建议吗？
谢谢， 霍华德
答案 0 :(得分：0)
为了更改WPF按钮背景图片，例如，在MouseOver事件上从Images/ContentImage.png更改为Images/ContentImage1.png，您可以添加包含ControlTemplate控件的Image并使用{{ 1}}如下面的XAML片段所示：
清单1.使用XAML触发器在MouseOver上更改按钮图像
Trigger另一种解决方案是允许更改
清单2.点击（XAML）
更改按钮图像<Button Name="button1">
<Button.Template>
<ControlTemplate TargetType="Button">
<Image Name="img1" Source="Images/ContentImage.png" />
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="img1"
Property="Source"
Value="Images/ContentImage1.png" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>
清单3.隐藏的C＃代码（button1.click事件处理程序）
<Button Name ="button1" Click="button1_Click">
<Button.Template>
<ControlTemplate TargetType="Button">
<Image x:Name="image1">
<Image.Style>
<Style TargetType="{x:Type Image}">
<Setter Property="Source" Value="Images/ContentImage.png" />
</Style>
</Image.Style>
</Image>
</ControlTemplate>
</Button.Template>
</Button>
希望这可能会有所帮助。
答案 1 :(得分：0)
好的，我找到了一个可行的解决方案 - 基于网页http://www.codeproject.com/Questions/634111/How-to-remove-Glow-of-Button-on-Mouse-hover-in-WPF
一点背景：这是我十年前用Java / Netbeans写的一个应用程序，这些应用程序多年来发展得相当大。因为Java / Netbeans不再支持桌面应用程序的s / w开发，所以我将它移植到Visual Studio WPF C＃。
xaml：
<Button x:Name="buttonDigit1" HorizontalAlignment="Left" Margin="0,10,0,0" VerticalAlignment="Top" Width="30" Height="50"
Click="buttonDigit1_Click" MouseRightButtonDown="buttonDigit1_RightClick" MouseWheel="buttonDigit1_MouseWheelMoved">
<Image Width="30" Height="50"></Image>
<Button.Template>
<ControlTemplate TargetType="Button">
<Grid Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
总共九个按钮重复此操作。 不同类中的串行I / O线程通过串行端口从无线电读取数据。如果收音机的频率发生变化，则会调用此窗口类中的方法来更改显示的频率。
窗口类中的C＃代码：
// class global variables
static ImageBrush[] digitBrush = new ImageBrush[10];
static BitmapImage[] digitImage = new BitmapImage[10];
static String radioDigitStyle = " ";
public void displayFrequency(String frequency0)
{
int frequency_int = HowardUtils.frequency_int(frequency0);
String frequency_str = HowardUtils.frequency_str(frequency_int);
textBoxFreqVFOA.Dispatcher.Invoke(new Action(() => {
textBoxFreqVFOA.Text = frequency_str;
}));
// Display the frequency in the digits display on RADIO Control Dialog
String frequency = frequency0.Replace(".", ""); // Eliminate "."s
frequency = HowardUtils.removeLeadingZeros(frequency);// Elmiinate leading 0s
while (frequency.Length < 10) {
// Add leading zeros for 10 digits
frequency = "0" + frequency;
}
if (Global.DEBUG_RADIO) Console.WriteLine("displayFrequency frequency='" + frequency + "'");
String[] digit_str = new String[9];
digit_str[0] = frequency.Substring(1, 1);
digit_str[1] = frequency.Substring(2, 1);
digit_str[2] = frequency.Substring(3, 1);
digit_str[3] = frequency.Substring(4, 1);
digit_str[4] = frequency.Substring(5, 1);
digit_str[5] = frequency.Substring(6, 1);
digit_str[6] = frequency.Substring(7, 1);
digit_str[7] = frequency.Substring(8, 1);
digit_str[8] = frequency.Substring(9, 1);
if (Global.DEBUG_RADIO) {
Console.WriteLine("displayFrequency digit_str=" +
digit_str[0] + digit_str[1] + digit_str[2] +
digit_str[3] + digit_str[4] + digit_str[5] +
digit_str[6] + digit_str[7] + digit_str[8]);
}
int[] digit = new int[9];
int i;
for (i = 0; i < 9; i++) {
if (digit_str[i] == " ") { digit_str[i] = "0"; } // Convert blank to zero.
digit[i] = Convert.ToInt32(digit_str[i]);
}
if (Global.DEBUG_RADIO) Console.WriteLine("debug - digit_str[i]='" +
digit_str[0] + digit_str[1] + digit_str[2] + " " +
digit_str[3] + digit_str[4] + digit_str[5] + " " +
digit_str[6] + digit_str[7] + digit_str[8] + "'"); //xxxxx
if (radioDigitStyle != Global.Settings.GetRadioDigits()) {
// radio digits style has changed.
//ImageBrush[] digitBrush = new ImageBrush[10];
for (i = 0; i < 10; i++) {
digitBrush[i] = new ImageBrush();
}
switch (Global.Settings.GetRadioDigits())
{
case "Blue Black Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCKBLUE.GIF", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCKBLUE.GIF", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCKBLUE.GIF", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCKBLUE.GIF", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCKBLUE.GIF", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCKBLUE.GIF", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCKBLUE.GIF", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCKBLUE.GIF", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCKBLUE.GIF", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCKBLUE.GIF", UriKind.Relative));
break;
case "Computer Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0COMPUTE.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1COMPUTE.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2COMPUTE.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3COMPUTE.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4COMPUTE.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5COMPUTE.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6COMPUTE.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7COMPUTE.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8COMPUTE.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9COMPUTE.gif", UriKind.Relative));
break;
case "Black Yellow Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCK-YLW.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCK-YLW.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCK-YLW.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCK-YLW.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCK-YLW.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCK-YLW.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCK-YLW.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCK-YLW.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCK-YLW.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCK-YLW.gif", UriKind.Relative));
break;
case "Black Turq Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCKTURQ.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCKTURQ.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCKTURQ.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCKTURQ.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCKTURQ.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCKTURQ.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCKTURQ.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCKTURQ.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCKTURQ.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCKTURQ.gif", UriKind.Relative));
break;
case "Black Red Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCK-RED.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCK-RED.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCK-RED.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCK-RED.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCK-RED.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCK-RED.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCK-RED.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCK-RED.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCK-RED.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCK-RED.gif", UriKind.Relative));
break;
case "Black Pink Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCKPINK.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCKPINK.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCKPINK.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCKPINK.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCKPINK.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCKPINK.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCKPINK.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCKPINK.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCKPINK.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCKPINK.gif", UriKind.Relative));
break;
case "Black Orange Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCKORNG.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCKORNG.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCKORNG.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCKORNG.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCKORNG.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCKORNG.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCKORNG.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCKORNG.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCKORNG.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCKORNG.gif", UriKind.Relative));
break;
case "Black Old Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0BCK-OLD.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1BCK-OLD.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2BCK-OLD.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3BCK-OLD.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4BCK-OLD.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5BCK-OLD.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6BCK-OLD.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7BCK-OLD.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8BCK-OLD.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9BCK-OLD.gif", UriKind.Relative));
break;
case "EVA01 Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0EVA00.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1EVA00.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2EVA00.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3EVA00.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4EVA00.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5EVA00.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6EVA00.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7EVA00.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8EVA00.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9EVA00.gif", UriKind.Relative));
break;
case "DigitF Digits":
digitImage[0] = new BitmapImage(new Uri("digits/0DIGIF.gif", UriKind.Relative));
digitImage[1] = new BitmapImage(new Uri("digits/1DIGIF.gif", UriKind.Relative));
digitImage[2] = new BitmapImage(new Uri("digits/2DIGIF.gif", UriKind.Relative));
digitImage[3] = new BitmapImage(new Uri("digits/3DIGIF.gif", UriKind.Relative));
digitImage[4] = new BitmapImage(new Uri("digits/4DIGIF.gif", UriKind.Relative));
digitImage[5] = new BitmapImage(new Uri("digits/5DIGIF.gif", UriKind.Relative));
digitImage[6] = new BitmapImage(new Uri("digits/6DIGIF.gif", UriKind.Relative));
digitImage[7] = new BitmapImage(new Uri("digits/7DIGIF.gif", UriKind.Relative));
digitImage[8] = new BitmapImage(new Uri("digits/8DIGIF.gif", UriKind.Relative));
digitImage[9] = new BitmapImage(new Uri("digits/9DIGIF.gif", UriKind.Relative));
break;
} //end switch
for (i=0; i<10; i++) {
digitBrush[i] = new ImageBrush( digitImage[i] );
}
//
radioDigitStyle = Global.Settings.GetRadioDigits();
} // end of radio digits style has changed.
System.Windows.Controls.Button[] radioDigitButtons = {
buttonDigit1,
buttonDigit2,
buttonDigit3,
buttonDigit4,
buttonDigit5,
buttonDigit6,
buttonDigit7,
buttonDigit8,
buttonDigit9 };
for (i = 0; i < 9; i++) {
buttonDigit1.Dispatcher.Invoke(new Action(() =>
{
radioDigitButtons[i].Background = digitBrush[digit[i]];
}));
}
RadioUtils.DisplayVFOFrequency();
} // end displayFrequency(String frequency0)
用户可以左键单击数字以增加频率值，然后右键单击数字以减小数值。鼠标滚轮也可以这样做。但是，我没有显示它的代码。
第一个答案解决了这个问题，但是当在一个公共方法内部从另一个类调用时，它就无法工作。但是，这些信息很有用，并改变了我的互联网搜索解决方案。
我几天来一直在努力寻找解决方案，是的，可以改进。