Question

我正在尝试使用转发器显示文件夹图像中的图片，但无法显示问号图片我不知道原因。

 <div data-u="slides" style="cursor: default; position: relative; top: 0px; left: 0px; width: 800px; height: 356px; overflow: hidden;">

                                <asp:Repeater runat="server" ID="RepaterImages">
                                    <ItemTemplate>
                                        <div  runat="server" data-p="144.50">
                                            
                                          <img  id="Image" runat="server" data-u="image" style="Width:120px;" src='<%#Container.DataItem %>'/>                                          

                                        </div>
                                    </ItemTemplate>
                                </asp:Repeater>
                            </div>

protected void Page_Load(object sender, EventArgs e)
{
    int id = Convert.ToInt32(Request.QueryString["id"]);

    var path = Server.MapPath("ProjectsImages/ ");

    var images = Directory.GetFiles(path,id+"*");

    ArrayList list = new ArrayList();

    foreach (var img in images)
    {

        list.Add(img);

    }
    RepaterImages.DataSource = images;
    RepaterImages.DataBind();
 }

Answer 1

您的代码存在的问题是，您正在使用图像的物理路径。您必须提供转发器的相对路径。如下所示更改您的代码，它应该工作我认为：

protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                int id = Convert.ToInt32(Request.QueryString["id"]);
                string relativePath = "/ProjectsImages/";
                var path = Server.MapPath(relativePath);
                var images = Directory.GetFiles(path, id + "*").Select(x =>
                {
                    var arrPath = x.Split('\\');
                    string imgName = arrPath[arrPath.Length - 1];
                    return relativePath + imgName;
                });
                RepaterImages.DataSource = images;
                RepaterImages.DataBind();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

Answer 2

您错过了Postback属性。请使用以下代码。

protected void Page_Load(object sender, EventArgs e)
{
   if(!IsPostBack)
   {
        int id = Convert.ToInt32(Request.QueryString["id"]);

        var path = Server.MapPath("ProjectsImages/ ");

        var images = Directory.GetFiles(path,id+"*");

        ArrayList list = new ArrayList();

        foreach (var img in images)
        {

           list.Add(img);

       }
       RepaterImages.DataSource = list;
       RepaterImages.DataBind();
    }
}

图像不显示asp.net转发器

2 个答案: