wpf 两个自定义控件
一个是IP控件，一个滑动条。先看下效果图
IPControl
1、实际工作中有时需要设置IP信息，就想着做一个ip控件。效果没有window自带的好，需要通过tab切换。但也能满足使用。废话不多说直接上代码
IPControl.xaml
<UserControl x:Class="WpfApp1.IPControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApp1">
<Viewbox>
<Border>
<DockPanel>
<DockPanel.Resources>
<Style TargetType="{x:Type TextBox}">
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="TextAlignment" Value="Center"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Stretch"/>
<Setter Property="MaxLength" Value="3"/>
<Setter Property="Width" Value="30"/>
<Setter Property="Height" Value="25"/>
</Style>
<Style TargetType="{x:Type Label}">
<Setter Property="Content" Value="."/>
</Style>
</DockPanel.Resources>
<TextBox TabIndex="1" GotFocus="TextBoxGotFocus" Text="{Binding Path=FirstIPValue, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:IPControl}}, UpdateSourceTrigger=PropertyChanged}"/>
<Label/>
<TextBox TabIndex="2" GotFocus="TextBoxGotFocus" Text="{Binding Path=SecondIPValue, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:IPControl}}, UpdateSourceTrigger=PropertyChanged}"/>
<Label/>
<TextBox TabIndex="3" GotFocus="TextBoxGotFocus" Text="{Binding Path=ThirdIPValue, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:IPControl}}, UpdateSourceTrigger=PropertyChanged}"/>
<Label/>
<TextBox TabIndex="4" GotFocus="TextBoxGotFocus" Text="{Binding Path=ForthIPValue, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:IPControl}}, UpdateSourceTrigger=PropertyChanged}"/>
</DockPanel>
</Border>
</Viewbox>
</UserControl>
IPControl.xaml.cs
public partial class IPControl : UserControl
{
public IPControl()
{
InitializeComponent();
}
#region DependencyProperty
public static readonly DependencyProperty IPAddressProperty =
DependencyProperty.Register("IPAddress", typeof(string), typeof(IPControl), new PropertyMetadata(defaultIP, (d, e) =>
{
if (d is IPControl control)
{
control.UpdateParts(control);
}
}));
public string IPAddress
{
get { return (string)GetValue(IPAddressProperty); }
set { SetValue(IPAddressProperty, value); }
}
#endregion
#region Static Field
private static readonly string defaultIP = "127.0.0.1";
#endregion
#region Field
private string firstIPValue;
private string secondIPValue;
private string thirdIPValue;
private string forthIPValue;
#endregion
#region Property
public string FirstIPValue
{
get { return firstIPValue; }
set
{
if (firstIPValue != value)
{
UpdateIPText(value, 1, ref firstIPValue);
}
}
}
public string SecondIPValue
{
get { return secondIPValue; }
set
{
if (secondIPValue != value)
{
UpdateIPText(value, 0, ref secondIPValue);
}
}
}
public string ThirdIPValue
{
get { return thirdIPValue; }
set
{
if (thirdIPValue != value)
{
UpdateIPText(value, 0, ref thirdIPValue);
}
}
}
public string ForthIPValue
{
get { return forthIPValue; }
set
{
if (forthIPValue != value)
{
UpdateIPText(value, 0, ref forthIPValue);
}
}
}
#endregion
#region Private Method
private void TextBoxGotFocus(object sender, RoutedEventArgs e)
{
InputMethod.Current.ImeState = InputMethodState.Off;
TextBox tb = sender as TextBox;
if (tb.Text.Length != 0)
{
tb.SelectAll();
}
}
private void UpdateIPText(string oldvalue, int minValue, ref string newValue)
{
int.TryParse(oldvalue, out int iValue);
if (iValue < minValue)
{
iValue = minValue;
}
if (iValue > 255)
{
iValue = 255;
}
newValue = iValue.ToString();
IPAddress = GetIPAddress();
}
private string GetIPAddress()
{
string str = "";
if (firstIPValue != null && firstIPValue.Length > 0)
{
str += firstIPValue + ".";
}
else
{
str += "0.";
}
if (secondIPValue != null && secondIPValue.Length > 0)
{
str += secondIPValue + ".";
}
else
{
str += "0.";
}
if (thirdIPValue != null && thirdIPValue.Length > 0)
{
str += thirdIPValue + ".";
}
else
{
str += "0.";
}
if (forthIPValue != null && forthIPValue.Length > 0)
{
str += forthIPValue;
}
else
{
str += "0";
}
return str;
}
private void UpdateParts(IPControl control)
{
if (control.IPAddress == null)
{
control.IPAddress = defaultIP;
}
string[] parts = control.IPAddress.Split('.');
if (parts.Length == 4)
{
control.FirstIPValue = parts[0];
control.SecondIPValue = parts[1];
control.ThirdIPValue = parts[2];
control.ForthIPValue = parts[3];
}
}
#endregion
}
2、控件有4个TextBox、4个Label组成。TextBox显示IP值，Label显示IP数据的“.”。
TextBox绑定依赖属性，设置TabIndex参数，通过Tab按键切换到下一个TextBox。每个TextBox最多输入3位
LightControl
1、前段时间，领导紧急安排一个工作。做一个测试灯光的小软件。与负责灯光同事沟通得知，光源板可同时控制24路灯。也就是说软件界面上需要有24个ScrollBar用来表示灯光亮度，24个Label显示名称。这要是一个一个控件加太慢了，没法做一个自定义空间，可设置显示名称，通过滑动条或者直接设置参数，改变亮度。于是需要一个Label、一个ScrollBar、一个TextBox与ScrollBar关联。
LightControl.xaml
<UserControl x:Class="WpfApp1.LightControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApp1">
<Viewbox>
<Border>
<DockPanel>
<Label Content="{Binding Path=LabelContent, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:LightControl}}}"
FontSize="17" Width="80" VerticalContentAlignment="Center"/>
<ScrollBar Value="{Binding Path=LightValue, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:LightControl}}}"
Orientation="Horizontal" Height="40" Width="200" Maximum="100" SmallChange="1"/>
<TextBox Text="{Binding Path=LightValue, StringFormat={}{0:F4}, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:LightControl}}, UpdateSourceTrigger=PropertyChanged}"
FontSize="17" Width="80" VerticalContentAlignment="Center"/>
</DockPanel>
</Border>
</Viewbox>
</UserControl>
LightControl.xaml.cs
public partial class LightControl : UserControl
{
public LightControl()
{
InitializeComponent();
}
#region DependencyProperty
public static readonly DependencyProperty LabelContentProperty =
DependencyProperty.Register("LabelContent", typeof(string), typeof(LightControl), new PropertyMetadata("灯光"));
public string LabelContent
{
get { return (string)GetValue(LabelContentProperty); }
set { SetValue(LabelContentProperty, value); }
}
public static readonly DependencyProperty LightValueProperty =
DependencyProperty.Register("LightValue", typeof(double), typeof(LightControl), new PropertyMetadata(1.0));
public double LightValue
{
get { return (double)GetValue(LightValueProperty); }
set { SetValue(LightValueProperty, value); }
}
#endregion
}
2、Label显示名称通过依赖属性由外接传入。
3、ScrollBar的Value属性与TextBox的Text属性绑定同一个依赖属性，可传递到调用者，同时TextBox显示信息设置保留小数点4位。
工作中有时需要自己做一些自定义控件，用来满足不同场景的需求。两个小控件，比较简单，希望此文能提供一些思路给你。