Add attachment filed column in SharePoint custom list forms through SharePoint designer 2013
Open the Custom Form (either it is edit or new item) in the SharePoint Designer 2010/2013. Identify the place and paste the following code in SPD. <tr> <td rowspan="2" width="190px" valign="top" height="50px"> <H3> Upload Evidence </H3> </td> <td valign="bottom" height="15" id="attachmentsOnClient"> <span dir="ltr"> <input type="file" name="fileupload0" id="onetidIOFile" size="56" title="Name" /> </span> </td> </tr> <tr> <td colspan="4"> <input id="attachOKbutton" type="BUTTON" onclick='OkAttach()' value="Upload" style="width: 12.8em; height: 2em"/> ...