WPF以字符串形式检索图像路径

Question

我有一个很少有图像项的ListView。 我想获取在字符串中单击的项目路径（图像），并将其作为VALUES进入数据库。 谢谢。

XML格式

<ListView  x:Name="LvImagini" ScrollViewer.HorizontalScrollBarVisibility="Disabled" HorizontalAlignment="Left" Height="200" Margin="215,299,0,0" VerticalAlignment="Top" Width="200">
    <ListViewItem>
        <Image Source="/imagini/1.png" Width="170" Height="180"/>
    </ListViewItem>
    <ListViewItem>
        <Image Source="/imagini/2.png" Width="170" Height="180"/>
    </ListViewItem>
</ListView>

按钮功能

private void btnRegSucces_Click(object sender, RoutedEventArgs e)
{
        try 
        {
            con.Open();
            String query = "INSERT into jucatori(utilizator,password) VALUES('" + tbxUtilizator.Text + "','" + tbxParola.Password + "')";

            SqlDataAdapter sda = new SqlDataAdapter(query, con);
            sda.SelectCommand.ExecuteNonQuery();

            con.Close();

            //String geo = LvImagini.SelectedItem.ToString();
        }
        catch
        {
            LabelError.Content = "E R O A R E!";
        }
    }   

Answer 1

我假设您在从选定的图像而不是实际的数据库查询中获取source属性时遇到麻烦。

    private void ListViewItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        var source= ((Image)((ListViewItem)sender).Content).Source;
    }

XAML

        <ListView HorizontalAlignment="Left" Height="257" Margin="135,52,0,0" VerticalAlignment="Top" Width="322">
        <ListViewItem>
            <Image Source="\imagini\1.jpg" Width="170" Height="180"/>
        </ListViewItem>
        <ListViewItem>
            <Image Source="\imagini\2.jpg" Width="170" Height="180"/>
        </ListViewItem>
        <ListView.ItemContainerStyle>
            <Style TargetType="ListViewItem">
                <EventSetter Event="PreviewMouseLeftButtonDown" Handler="ListViewItem_PreviewMouseLeftButtonDown" />
            </Style>
        </ListView.ItemContainerStyle>
    </ListView>

Answer 2

考虑到将XAML标记转换为幕后的压缩包URI，从XAML标记中获取源代码并不容易，但这样的方法应该有效：

ListViewItem selectedItem = LvImagini.SelectedItem as ListViewItem;
Image image = selectedItem.Content as Image;
string source = image.Source.ToString();
string path = source.Substring(source.IndexOf("pack://application:,,,/") + 23);