MayurNarsale,

Q1.

Try using uploader instead of UploadAttachments.

<CuteWebUI:Uploader runat="server" MultipleFilesUpload="true" ID="Uploader1">
</CuteWebUI:Uploader>
 

asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx