Download File using Path stored in XML file in ASP.Net

Hi @ rkumar9090,

This error will be raised if file is not present there.You need to check whether file is prsented.

  If file is not prsent there so error will be thrown.

To avoid this erro you need to handle as i say below.

 protected void Download(object sender, EventArgs e)
        {
            string filePath = (sender as LinkButton).Text;
            if (File.Exists(filePath))
            {
                string fileName = Path.GetFileName(filePath);
                Response.Clear();
                Response.Buffer = true;
                Response.AddHeader("content-disposition", "attachment;filename=" + fileName);
                Response.Charset = "";
                Response.ContentType = "application/vnd.ms-word ";
                Response.WriteFile(filePath);
                Response.Flush();
                Response.End();
            }
            else
            {
                Page.ClientScript.RegisterStartupScript(this.GetType(), "script", "<script type='text/javascript'>alert('file is not present');</script>");
            }
        }

I  hope it will solve all your problem

Html Code:-

 <asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false" OnPageIndexChanging="OnPageIndexChanging"
        AllowPaging="true" PageSize="10">
        <Columns>
            <asp:BoundField DataField="Date" HeaderText="Date" />
            <asp:BoundField DataField="Name" HeaderText="Name" />
            <asp:BoundField DataField="Qualification" HeaderText="Qualification" />
            <asp:BoundField DataField="areaofinterest" HeaderText="areaofinterest" />
            <asp:BoundField DataField="yearofexperience" HeaderText="yearofexperience" />
            <asp:BoundField DataField="Mobile" HeaderText="Mobile" />
            <asp:BoundField DataField="EmailID" HeaderText="EmailID" />
            <asp:BoundField DataField="Address" HeaderText="Address" />
            <asp:BoundField DataField="Country" HeaderText="Country" />
            <asp:BoundField DataField="City" HeaderText="City" />
            <asp:BoundField DataField="state" HeaderText="state" />
            <asp:TemplateField HeaderText="Resume">
                <ItemTemplate>
                    <asp:LinkButton ID="lnkResume" runat="server" Text='<%#Eval("Resume") %>' OnClick="Download"></asp:LinkButton>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

C# Code:-

 protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                this.BindGrid();
            }
        }

        protected void Download(object sender, EventArgs e)
        {
            string filePath = (sender as LinkButton).Text;
            if (File.Exists(filePath))
            {
                string fileName = Path.GetFileName(filePath);
                Response.Clear();
                Response.Buffer = true;
                Response.AddHeader("content-disposition", "attachment;filename=" + fileName);
                Response.Charset = "";
                Response.ContentType = "application/vnd.ms-word ";
                Response.WriteFile(filePath);
                Response.Flush();
                Response.End();
            }
            else
            {
                Page.ClientScript.RegisterStartupScript(this.GetType(), "script", "<script type='text/javascript'>alert('file is not present');</script>");
            }
        }

        protected void OnPageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            this.gvCustomers.PageIndex = e.NewPageIndex;
            this.BindGrid();
        }

        private void BindGrid()
        {
            using (DataSet ds = new DataSet())
            {
                ds.ReadXml(Server.MapPath("~/Files/Registrations.xml"));
                this.gvCustomers.DataSource = ds;
                this.gvCustomers.DataBind();
            }
        }

Namespaces:-

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.IO;