Preview image before upload using Jquery and save in asp.net | ASPMANTRA | Asp.Net,MVC,AngularJs,Jquery,Javascript,Sql Server AND WCF snippets and tutorial

Preview image before upload using Jquery and save in asp.net

Introduction: In this article today I will explain how we can preview the image before upload and save in asp.net

Description:


Add a webform to project. After add the below given script and style to head section of page:

<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>
    <script type="text/javascript">
$(function() {
    $("#FileUpload1").on("change", function ()
    {
        var files = !!this.files ? this.files : [];
        if (!files.length || !window.FileReader) return;

        if (/^image/.test( files[0].type)){ 
            var reader = new FileReader(); 
            reader.readAsDataURL(files[0]); 

            reader.onloadend = function(){ 
                $("#imagePreview").css("background-image", "url(" + this.result + ")");
 
            }
        }
    });
});
</script>


<style>
#imagePreview {
    width: 250px;
    height: 250px;
    background-position: center center;
    background-size: cover;
    -webkit-box-shadow: 0 0 1px 1px rgba(0, 0, 0, .3);
    display: inline-block;
}
</style>

Design page as shown below:

  <center>
   <fieldset style="width:35%">
   <legend>Preview Image before upload</legend>
   <table>
   <tr><td>Upload Image:</td><td>
       <asp:FileUpload ID="FileUpload1" runat="server" /><br />
       <asp:Label ID="lblmessage" runat="server"></asp:Label></td></tr>
       <tr><td></td><td><table><tr><td>
           <asp:Image ID="imagePreview" runat="server" /></td></tr></table></td></tr>
   <tr><td></td><td> <asp:Button ID="btnupload" runat="server" Text="Upload Image"
           onclick="btnupload_Click" /></td></tr>
   </table>        
      
   </fieldset>
   </center>

Now on button click event write the given code (C#):

protected void btnupload_Click(object sender, EventArgs e)
        {
            if (FileUpload1.HasFile)
            {
                string path = Server.MapPath("~/Images/") + FileUpload1.FileName;
                FileUpload1.SaveAs(path);
            }
            else
            {
                lblmessage.Text = "Select image to Upload";
            }
        }

In VB:

Protected Sub btnupload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnupload.Click
        Dim path As String
        If FileUpload1.HasFile Then
            path = Server.MapPath("~/images/") + FileUpload1.FileName
            FileUpload1.SaveAs(path)
        Else
            lblmessage.Text = "Select image to Upload"
        End If

    End Sub


Build the project and run.

Result:

Preview image before upload

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can i know the eror/isue? code is tested and working for me....

not working , can you upload your demo here..?

[blogger]

MKRdezign

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