Asp.net Preview Image before Upload

If you want to preview and image before its uploaded you have two options

1. Using a jQuery plugin
  There are plenty of jQuery plugins available that you can use to achieve this purpose. Here I will list some of the common plugins used.

• jQuery File Upload
• Dropzone
• Bootstrap File Input

2.Without using a jQuery plugin
  Here you can use simple jQuery as shown below.

HTML

<form id="form1" runat="server">
    <input type='file' id="imgUp" />
    <img id="preview" src="#" alt="your image" />
</form>

JavaScript

<script type="text/javascript">

 $("#imgUp").change(function(){

     var input= $(this).val();


    if (input.files && input.files[0]) {
        var reader = new FileReader();

        reader.onload = function (e) {
            $('#preview').attr('src', e.target.result);
        }

        reader.readAsDataURL(input.files[0]);
    }
});

 </script>

Cheers
Samitha