两种方法添加图片

上载图片的两种方法：

UI代码：很简单一个Image控件显示加载的图片，一个Button用于文件流方式添加图片

<Window x:Class="拖放添加图片.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" AllowDrop="True">
    <Grid Background="#FF8BC957">
        <Grid.RowDefinitions>
            <RowDefinition Height="19*"/>
            <RowDefinition Height="8*"/>
            <RowDefinition Height="5*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="149*"/>
            <ColumnDefinition Width="227*"/>
            <ColumnDefinition Width="141*"/>
        </Grid.ColumnDefinitions>
        <Border Grid.Column="1" BorderBrush="Orange" BorderThickness="3" Background="WhiteSmoke" CornerRadius="5" Margin="5"  Drop="Image_Drop_1">
            <Grid>           
                <TextBlock Text=" 图片拖动到此添加" TextWrapping="WrapWithOverflow" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="50,76,37,82" Width="124"/>
                <Image Grid.Column="1" x:Name="phtoSrc" Stretch="Fill" Panel.ZIndex="1"/>
            </Grid>
        </Border>
        <Button Content="...." Width="80" Height="20" Grid.Column="1" Grid.Row="1" Click="Button_Click_1"/>
    </Grid>
</Window>

方法1、将图片拖拽到指定区域添加

Border里面添加Drop事件Image_Drop_1

后台代码：

 private void Image_Drop_1(object sender, DragEventArgs e)
        {
            string[] fileNames = e.Data.GetData(DataFormats.FileDrop,true) as string[];
            if (fileNames.Length > 0)
            {
                phtoSrc.Source = new BitmapImage(new Uri(fileNames[0]));
            }
            e.Handled = true;
        }

当将图片拖到Border内即可添加。

方法2：文件方式 点击Button 打开文件对话框选择需要添加的图片即可

对应Button_Click_1的后台代码：

private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
            //设置文件类型过滤
             dlg.Filter = "图片|*.jpg;*.png;*.gif;*.bmp;*.jpeg";
            //禁止多选
             dlg.Multiselect = false;
             // 调用ShowDialog方法显示＂打开文件＂对话框
             Nullable<bool> result = dlg.ShowDialog();

             if (result == true)
              {
                  //获取所选文件名并在FileNameTextBox中显示完整路径
                 string filename = dlg.FileName;
                 // FileNameTextBox.Text = filename;
                 phtoSrc.Source = new BitmapImage(new Uri(filename));

             }

如果添加命名空间Microsoft.Win32则可直接使用OpenFileDialog。