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POhow to pass id as a parameter of FileUpload to javascript function to check extension and size of file
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  1. POhow to pass id as a parameter of FileUpload to javascript function to check extension and size of file
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    copied!<p>I am working on asp.net web application in which i have 6 FileUpload Controls for one file upload i have created a javascript method to check file extension and file size. but how to pass id of FileUpload upload dynamically so that only in only one method i can validate all FileUpload my code of javacript is </p> <pre><code> var validFilesTypes = ["bmp", "gif", "png", "jpg", "jpeg", "doc", "docx", "xls", "xlsx", "htm", "html", "rar", "zip", "txt", "pdf"]; function CheckExtension() { /*global document: false */ var file = document.getElementById("&lt;%=txtTenderDoc.ClientID%&gt;"); var path = file.value; var ext = path.substring(path.lastIndexOf(".") + 1, path.length).toLowerCase(); var isValidFile = false; for (var i = 0; i &lt; validFilesTypes.length; i++) { if (ext == validFilesTypes[i]) { isValidFile = true; break; } } if (!isValidFile) { alert("Invalid File. Unknown Extension Of Tender Doc" + "Valid extensions are:\n\n" + validFilesTypes.join(", ")); } return isValidFile; } function validateFileSize() { /*global document: false */ var file = document.getElementById("&lt;%=txtTenderDoc.ClientID%&gt;"); var fileSize = file.files[0].size; var isValidFile = false; if (fileSize !== 0 &amp;&amp; fileSize &lt;= 25214400) { isValidFile = true; } if (!isValidFile) { alert("File Size Should be Greater than 0 and less than 25 mb"); } return isValidFile; } </code></pre> <p>and i have used this in aspx page</p> <pre><code>&lt;asp:FileUpload ID="txtTenderDoc" onchange="var result= CheckExtension();validateFileSize(); return result" runat="server"&gt;&lt;/asp:FileUpload&gt; </code></pre> <p>as you can see i have to create <strong>6 method</strong> by this to check file size and file extension how to do that in only one method....</p>
 

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