Not Able to Open Excel File When Hosting In IIS Server In Asp.Net C#

Question

I have developed an asp.net,c# application. In that application I have a task like open excel file, I've done the task when developing visual studio, its working fine locally .

but when I hosted my application into IIS server, it is not responding when I click read button.

My IIS Version - 7.5.7600

Asp.Net Code:

<asp:TemplateField HeaderText="Read">
 <ItemTemplate>
   <asp:LinkButton runat="server" ID="lnkKpiName" Text='✉ Read' CommandName="View" CommandArgument="<%# ((GridViewRow) Container).RowIndex %>" CssClass="label" ForeColor="Green"></asp:LinkButton>
 </ItemTemplate>
</asp:TemplateField> 

C# Code :

if (e.CommandName == "View")
{
   LinkButton lnkBtn = new LinkButton();
   lnkBtn.Attributes.Add("target", "_blank");
   int index = Convert.ToInt32(e.CommandArgument);
   string FileName = ((Label)gvwUserManual.Rows[index].FindControl("lblFileName")).Text;
   ProcessStartInfo sInf = new ProcessStartInfo();
   sInf.FileName = "EXCEL.EXE";
   string XlsPath = Server.MapPath(@"~/SupportDocuments/" + Request.Cookies["BCookies"]["SessionUserName"].Trim().ToString() +"/" + FileName);
   sInf.Arguments = XlsPath;
   Process.Start(sInf);
}

Do I have give any permission to open excel file through IIS?

Answer 1

You don't want Excel to start on your web server. Instead send the file to the user using Response.WriteFile() eg

if (e.CommandName == "View")
{
    int index = Convert.ToInt32(e.CommandArgument);
    string FileName = ((Label)gvwUserManual.Rows[index].FindControl("lblFileName")).Text;
    string XlsPath = Server.MapPath(@"~/SupportDocuments/" + Request.Cookies["BCookies"]["SessionUserName"].Trim().ToString() +"/" + FileName);

    // send file to user
    Response.Clear();
    Response.AppendHeader("content-disposition", "attachment; filename=" + FileName);
    Response.ContentType = "application/octet-stream";
    Response.WriteFile(XlsPath);
    Response.Flush();
    Response.End();
}

Something else you can do is use an Office URI scheme in the download links, if you are sure the user has Excel installed, so you contruct a hyperlink like so:

<a href="ms-excel:ofv|u|https://www.example.com/SupportDocuments/foo.xls">Open XLSX</a>

That ms-excel:ofv|u| prefix should get handled by Excel (if they have it installed).

The template for the download link might look like this:

<asp:HyperLink runat="server" 
    NavigateUrl='<%# "ms-excel:ofv|u|" + new Uri(Request.Uri, "/SupportDocuments/" + your_filename_variable ).AbsoluteUri %>'
    Text="Read" />  

Answer 2

我不知道为什么需要这样做，但是无论如何：运行Web应用程序的iis用户根本没有那么多的权限来运行excel应用程序，您可以更改应用程序池标识（IIS管理器-> ApplicationPools ->“您的ApplicationPoolIdentity池”高级设置->身份），从ApplicationPoolIdentity到LocalSystem