C1FilePicker 如何在 OpenFileDialog 中显示绝对路径

最近论坛中有用户询问 C1FilePicker 如何在 OpenFileDialog 中显示绝对路径。默认情况下，OpenFileDialog对话框仅仅显示选择文件的名称。

实现方法比较简单，本篇文章对 WPF 控件的初学者会有所帮助。这个功能可以通过继承 C1FilePicker 和抓取 “浏览按钮”点击事件来实现。在浏览按钮点击事件中来自定义显示字符串。

C# Code

  1: public class MyC1FilePicker : C1.WPF.C1FilePicker

  2: {

  3:     public override void OnApplyTemplate()

  4:     {

  5:         base.OnApplyTemplate();

  6:   

  7:         var btn = GetTemplateChild("Browse") as Button;

  8:         btn.PreviewMouseDown += 

new MouseButtonEventHandler(btn_PreviewMouseDown);

  9:     }

 10:   

 11:     void btn_PreviewMouseDown(object sender, MouseButtonEventArgs e)

 12:     {

 13:          e.Handled = true;

 14:          OpenFileDialog opd = new OpenFileDialog();

 15:          opd.Filter = this.Filter;

 16:          opd.FileName = this.SelectedFile.ToString();

 17:          opd.InitialDirectory = this.SelectedFile.DirectoryName;

 18:          if (opd.ShowDialog() == true)

 19:             this.SelectedFile = new System.IO.FileInfo(opd.FileName);

 20:      }

 21: }

XML Code

  1: xmlns:local="clr-namespace:WPF_FilePicker_CustomOpenFile"

  1: <local:MyC1FilePicker x:Name="c1FilePicker1" Width="125" Height="25" 

Filter="Image Files(*.PNG;*.JPG;*.GIF)|*

.PNG;*.JPG;*.GIF|All files (*.*)|*.*"/>

Demo 下载：VS 2010 + C# + 。NET 4.0+Studio for WPF