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I used this article for show image after upload without refresh page.
Display image after upload without page refresh or postback using ASP.Net AsyncFileUpload Control
I customize the FileUploadComplete because I want to create name for uploaded files: 

protected void FileUploadComplete(object sender, EventArgs e)
{
    string filename = System.IO.Path.GetFileName(AsyncFileUpload1.FileName);
    filename = Uploader.CreateNameForFile(filename);
    AsyncFileUpload1.SaveAs(Server.MapPath(this.UploadFolderPath) + filename);
    Session["image"] = filename;
}

After I change the code, Image doesn't shown after upload.
what do I do?

Izzy
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Majid Basirati
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1 Answers1

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you have to have javascript for this scenario:

from code behind

url = location of saved image

ScriptManager.RegisterClientScriptBlock(Me, Me.GetType(), "image", "top.$get(""" & _img.ClientID & """).src = '" & url & "';", True)

Display image after upload without page refresh or postback using ASP.Net AsyncFileUpload Control shows you how to do it from client side

Weafs.py
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Kelvin Yong
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