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POASP.Net Ajax File upload
 

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  1. POASP.Net Ajax File upload
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    <p>I am trying to upload an image and after uploading i want to show it in the image control. My code is:</p> <pre><code>&lt;form id="form1" runat="server"&gt; &lt;div&gt; &lt;asp:ScriptManager ID="ScriptManager1" runat="server"&gt; &lt;/asp:ScriptManager&gt; &lt;asp:UpdatePanel ID="UpdatePanel1" runat="server"&gt; &lt;ContentTemplate&gt; &lt;asp:FileUpload ID="FileUploadTest" runat="server" /&gt; &lt;asp:Button ID="ShowImage" runat="server" Text="Show" onclick="ShowImage_Click" /&gt; &lt;asp:Image ID="ImageUploaded" runat="server" Height="150px" Width="150px" ImageUrl="~/images/blankImage.gif" /&gt; &lt;asp:Label ID="Label1" runat="server" Text=""&gt;&lt;/asp:Label&gt; &lt;/ContentTemplate&gt; &lt;Triggers&gt; &lt;asp:PostBackTrigger ControlID="ShowImage" /&gt; &lt;/Triggers&gt; &lt;/asp:UpdatePanel&gt; &lt;/div&gt; &lt;/form&gt; </code></pre> <p>C# code is:</p> <pre><code>protected void ShowImage_Click(object sender, EventArgs e) { Label1.Text = ""; if (FileUploadTest.HasFile) { try { if (FileUploadTest.PostedFile.ContentType == "image/jpeg") { if (FileUploadTest.PostedFile.ContentLength &lt; 102400) { string filename = Path.GetFileName(FileUploadTest.FileName); string imageSavePath = Server.MapPath("~/images/") + filename; FileUploadTest.SaveAs(imageSavePath); ImageUploaded.ImageUrl = imageSavePath; ImageUploaded.Visible = true; Label1.Text = "Upload status: File uploaded!"; } else Label1.Text = "Upload status: The file has to be less than 100 kb!"; } else Label1.Text = "Upload status: Only JPEG files are accepted!"; } catch (Exception ex) { Label1.Text = "Upload status: The file could not be uploaded. The following error occured: " + ex.Message; } } else { Label1.Text = "No File !!!"; } } </code></pre> <p>But After pressing the show button, the image is uploaded successfully. But the image control got vanished. Can any one help me about it?</p>
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    1. COAjax file uploads are not possible, but you can fake it with an iframe. If you go directly to the image src in your browser can you see the image?
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      1. USJace Rhea
 

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