c# - LINQ to XML 和 GridView.ImageField

Question

我想知道如何根据 xml 文档中的 imageurl 将图像添加到 gridview。到目前为止我有...

XDocument xmlDoc = XDocument.Load(Server.MapPath("XMLFile.xml"));

var q = from c in xmlDoc.Descendants("Images")
        where c.Element("PropertyId").Value.ToString() == DropDownList1.SelectedValue.ToString()
        select new
        {
            Id = c.Element("PropertyId").Value,
            Thumb = c.Element("ThumbUrl").Value                
        };
GridView1.DataSource = q;
GridView1.DataBind();

可以很好地在拇指字段中显示 url，但不是显示这个，我如何将其更改为图像字段？

Answer 1

Markup:

<asp:GridView runat="server">
    <Columns>
        <ImageField DataImageUrlField="PhotoPath" />
    </Columns>
</<asp:GridView>

Code-behind:

string selectedValue =  DropDownList1.SelectedValue.ToString(); // cache it!
var q = from c in xmlDoc.Descendants("Images")
        where c.Element("PropertyId").Value.ToString() == selectedValue 
        select new
        {
            PhotoPath = c.Element("PhotoPath").Value         
        };

GridView1.DataSource = q;
GridView1.DataBind();

What is your problem?