Question

I have got two image folders namely a and b which consist of images of products. All images are save as there productid. how can can i find the images from a folder by passing there productid and save the images in a list.

Dim AllImages As New List(Of String)

After saving it , how can i render those images one by one into string builder like

Dim imagecontainer As New StringBuilder
 For Each image In AllImages
imagecontainer.Append("<img src="image" alt="" />") Next image

Any ideas of how to do this, your help will be highly appreciated.

Answer 1

You can use the ResolveClientUrl within your page code-behind:


var clientImageUrl = ResolveClientUrl("yourimagefolder/sampleimage.jpg");

或者,你可以使用虚拟卫生。 2. 巩固这一结果:


VirtualPathUtility.ToAbsolute("yourimagefolder/sampleimage.jpg")

In order to read all the files from a folder and then filter them by file name (your ID) you can use (use the System.IO namespace) :


 DirectoryInfo directory = new System.IO.DirectoryInfo("c:YourFolder");
 var allFiles = directory.GetFiles(".", System.IO.SearchOption.AllDirectories);

 var fileFounds = from file in allFiles 
                  where file.Name == "YourID"
                  select file;

foreach (var file in fileFounds)
{
    //Build your image
}

EDIT: here s the vb.net version (I ve used a code converter, hope it worked well: )


 Using ResolveClientUrl 
Dim clientImageUrl = ResolveClientUrl("yourimagefolder/sampleimage.jpg")

 Using VirtualPathUtility
VirtualPathUtility.ToAbsolute("yourimagefolder/sampleimage.jpg")

 Reading files from directory
Dim directory As DirectoryInfo = New System.IO.DirectoryInfo("c:YourFolder")
Dim allFiles = directory.GetFiles(".", System.IO.SearchOption.AllDirectories)

Dim fileFounds = _
    Where file.Name = "YourID"

     Build your image


For Each file As var In fileFounds
Next

Answer 2

Use DirectoryInfo to get all files in a directory
Use your foreach loop to build the html
Add a PlaceHolder to your page and add your html to it

或者,你可以使用

Here s an example with a Repeater.

标记:

<asp:Repeater id="imageRepeater" runat="server">
  <ItemTemplate>
     <img src= <%# Container.DataItem %>  alt="" />
  </ItemTemplate>
</asp:Repeater>

准则背后:

imageRepeater.DataSource = imageFiles
imageRepeater.DataBind()

友情链接