这个Urikind相关的究竟是什么意思 [英] What exactly mean by this Urikind.relative

问题描述

我在做什么是我会有一个datagridview当我选择一行，点击显示按钮我想显示图像以及一些信息，我写了以下代码

What i am doing is i will have a datagridview when i select a row and click on show button i would like to display the image along with some information for that i written the following code

public partial class WpfWindow : Window
{
    private UCPersons _ucPersons;

    public WpfWindow()
    {
        InitializeComponent();

        // Create WinForms Usercontrol and 
        // add it to the WindowsFormsHost
        _ucPersons = new UCPersons();
        winFormHost.Child = _ucPersons;

        List<Person> persons = CreateSamplePersons();
        _ucPersons.SetData(persons);


    }

    private List<Person> CreateSamplePersons()
    {
        List<Person> persons = new List<Person>();
        persons.Add(Person.Create("Dorababu", "Madhuranagar", "Hyd", 
            DateTime.Now.AddYears(-34), "1"));

        persons.Add(Person.Create("Krish", "Sat", "RJY",
            DateTime.Now.AddYears(-64), "2"));


        return persons;
    }

    private void btnDisplayDetails_Click(object sender, RoutedEventArgs e)
    {
        Person person = _ucPersons.GetSelectedPerson();
        if (person != null)
        {
            lblName.Content = person.Name;
            lblAge.Content = person.BirthDay.ToShortDateString();
            Uri uri = new Uri( "m_" + person.ImageRef + ".jpg", 
                UriKind.Relative);
            imgPerson.Source = BitmapFrame.Create(uri);
        }
    }
}

但同样没有工作如果我复制并粘贴我的图像从Bin。

But the same is not working if i copy and paste my images out of Bin.

所以我想知道一些关于这个 UriKInd

So i would like to know some thing about this UriKInd

推荐答案

相对于绝对。 chicken / pot / pie.jpg将是相对的，因为它与当前目录相对相对。而像C：/images/food/chicken/pot/pie.jpg这样的东西就是绝对，因为它相对于根驱动器。

Relative, as opposed to Absolute. "chicken/pot/pie.jpg" would be relative, because it's relative to the current directory. Whereas something like "C:/images/food/chicken/pot/pie.jpg" would be absolute because it's ...err... relative to the root of the drive.

以这种方式初始化Uri的唯一真正原因是当uri格式不正确时避免（或引起）异常;当Uri不是预定时有用的。

The only real point to initializing the Uri this way is to avoid (or cause) exceptions when the uri is not well-formed; useful when the Uri is not predetermined.

MSDN参考

相对和绝对URI对其格式有不同的限制。例如，相对URI不需要方案或权限。您在 uriKind 中指定的值必须与 uriString 中传递的URI类型相匹配。但是，如果指定了 RelativeOrAbsolute ，URI字符串可以是相对或绝对。

Relative and absolute URIs have different restrictions on their format. For example, a relative URI does not require a scheme or an authority. The value you specify in uriKind must match the type of URI passed in uriString. However, if RelativeOrAbsolute is specified, the URI string can be relative or absolute.

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