WPF自定义搜索框代码分享

首先下载搜索图标：

控件中的搜索图标下载地址：http://www.easyicon.net/1183666-Search_icon.html 

搜索框设计过程比较简单： 

1、先定义一个Rectangle作为背景 

2、然后中间放TextBox输入，可以重写其中的模板。提示语Label放在模板中，可以在模板的触发器中控制隐藏显示~ 

3、搜索按钮-大家随便在网上下个就行了。 

UserControl界面： 

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<UserControl x:Class="WpfApplication18.SearchControl"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"        mc:Ignorable="d" MinHeight="30" MinWidth="150" Background="Transparent"        d:DesignHeight="30" d:DesignWidth="150">   <Grid>     <Grid.ColumnDefinitions>       <ColumnDefinition Width="15"></ColumnDefinition>       <ColumnDefinition Width="*"></ColumnDefinition>       <ColumnDefinition Width="36"></ColumnDefinition>     </Grid.ColumnDefinitions>     <Rectangle Grid.Column="0" Grid.ColumnSpan="3" Fill="LightGray" RadiusX="15" RadiusY="15" Opacity="0.8"></Rectangle>           <TextBox x:Name="TbxInput" Grid.Column="1" KeyDown="TbxInput_OnKeyDown">       <TextBox.Template>         <ControlTemplate TargetType="TextBox">           <Grid>             <TextBlock x:Name="Uc_TblShow" Text="请输入..." Foreground="Gray" Opacity="0.5" VerticalAlignment="Center" Visibility="Collapsed"></TextBlock>             <TextBox x:Name="Uc_TbxContent" Foreground="Gray" Background="Transparent" VerticalAlignment="Center" VerticalContentAlignment="Center" BorderThickness="0"                  Text="{Binding ElementName=TbxInput,Path=Text,Mode=TwoWay}" FontSize="18"></TextBox>           </Grid>           <ControlTemplate.Triggers>             <Trigger SourceName="Uc_TbxContent" Property="Text" Value="">               <Setter TargetName="Uc_TblShow" Property="Visibility" Value="Visible"></Setter>             </Trigger>             <Trigger SourceName="Uc_TbxContent" Property="IsFocused" Value="True">               <Setter TargetName="Uc_TblShow" Property="Visibility" Value="Collapsed"></Setter>             </Trigger>           </ControlTemplate.Triggers>         </ControlTemplate>       </TextBox.Template>     </TextBox>           <Button x:Name="BtnSearch" Grid.Column="2" Click="BtnSearch_OnClick" Cursor="Hand">       <Button.Template>         <ControlTemplate TargetType="Button">           <Grid>             <Image x:Name="Uc_Image" Source="1181298.png" Height="20" Width="20"></Image>             <ContentPresenter></ContentPresenter>           </Grid>           <ControlTemplate.Triggers>             <Trigger Property="IsMouseOver" Value="true">               <Setter TargetName="Uc_Image" Property="Height" Value="25"></Setter>               <Setter TargetName="Uc_Image" Property="Width" Value="25"></Setter>             </Trigger>           </ControlTemplate.Triggers>         </ControlTemplate>       </Button.Template>     </Button>   </Grid> </UserControl>

UserControl后台：

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public partial class SearchControl : UserControl {   public SearchControl()   {     InitializeComponent();   }     public event EventHandler<SearchEventArgs> OnSearch;   private void BtnSearch_OnClick(object sender, RoutedEventArgs e)   {     ExeccuteSearch();   }     private void TbxInput_OnKeyDown(object sender, KeyEventArgs e)   {     ExeccuteSearch();   }     private void ExeccuteSearch()   {     if (OnSearch!=null)     {       var args=new SearchEventArgs();       args.SearchText = TbxInput.Text;       OnSearch(this, args);     }   } } public class SearchEventArgs : EventArgs {   public string SearchText { get; set; } }

直接引用就行了：<wpfApplication18:SearchControl></wpfApplication18:SearchControl>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。