How to validate user in pop up box on grid view link button click

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when i click the download(link button) in grid view am showing a pop up box(to valide mobile number am sending OTP to mobile ,in pop up box i have Text box and button control ) ,
when i submit otp in pop up if he is a valid then start download document if not show error message

am getting error as
when i click download , pop up is showing and download also starting
but i want to verify user in pop up , when he submit valid otp then download should start

ASP.NET

<asp:GridView ID="GridView1" runat="server" HeaderStyle-BackColor="#cccccc" HeaderStyle-ForeColor="Black"
                        RowStyle-BackColor="white" RowStyle-ForeColor="#003366" AlternatingRowStyle-BackColor="White" AlternatingRowStyle-ForeColor="#000"
                        AutoGenerateColumns="false" Font-Bold="False">
                        <Columns>
                            <asp:BoundField DataField="UserName" HeaderText="User Name" />
                            <asp:BoundField DataField="DocumentType" HeaderText="Document Type" />
                            <asp:BoundField DataField="FormType" HeaderText="Form Type" />
                            <asp:BoundField DataField="Description" HeaderText="Description" />

                            <asp:TemplateField ItemStyle-HorizontalAlign="Center">
                                <ItemTemplate>
                                    <asp:LinkButton ID="lnkDownload" runat="server" Text="Download" OnClick="DownloadFile" OnClientClick="document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block';"
                                        CommandArgument='<%# Eval("Id") %>'></asp:LinkButton>
                                </ItemTemplate>
                            </asp:TemplateField>
                        </Columns>
                    </asp:GridView>

cs code

C#

protected void DownloadFile(object sender, EventArgs e)
    {
       
        //if (txtOtp.Text == txtName.Text)
        //{

            int id = int.Parse((sender as LinkButton).CommandArgument);
            byte[] bytes;
            string DocumentType, FormType, fileName, Description, contentType;
            string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
            cmd.CommandText = "select UserName,DocumentType,FormType,Name, Data, ContentType,Description from tblFiles ";
            cmd.Parameters.AddWithValue("@Id", id);
            cmd.Connection = con;
            con.Open();
            using (SqlDataReader sdr = cmd.ExecuteReader())
            {
                sdr.Read();
                bytes = (byte[])sdr["Data"];
                DocumentType = sdr["DocumentType"].ToString();
                FormType = sdr["FormType"].ToString();
                contentType = sdr["ContentType"].ToString();
                fileName = sdr["Name"].ToString();
                Description = sdr["Description"].ToString();
            }

            con.Close();


            Response.Clear();
            Response.Buffer = true;
            Response.Charset = "";
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.ContentType = contentType;
            Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
            Response.BinaryWrite(bytes);
            Response.Flush();
            Response.End();
        //}
        //else
        //{
        //     Response.Write("&lt;script&gt; alert('wrong otp.......')&lt;/script&gt;");
        //}
       }

Posted 10-Jan-16 21:47pm

Member 11382784

Updated 11-Jan-16 22:39pm

F-ES Sitecore

v3

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Comments

F-ES Sitecore 12-Jan-16 4:48am

There is nothing in your code that shows a pop-up? The LinkButton calls the download file code which downloads the file. I'm struggle to understand why this isn't seemingly obvious?

You'll need something that shows a pop-up when you click the download link and in that pop-up you'll need a form (or some other mechanism) that verifies the user based on the OTP and if successful it will then call the download code you currently have. How that works depends on what you use to drive your pop-op. You could use the ajaxtoolkit popup extender, or a jQuery pop-up....lots of options.

Richard Deeming 12-Jan-16 9:29am

There's also nothing in your code that validates the user's OPT.

And you seem to be missing a WHERE clause in your query - you've added a parameter to select a specific file, but you've never used it in the query.

[no name] 12-Jan-16 11:21am

In your aspx page code, add how do you design for "light" div pop up.

Do "Improve Question" and append HTML code.

yourfriendaks 15-Jan-16 6:44am

why you are calling downloadfile method on link button?

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Treat my content as plain text, not as HTML

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