File upload in asp.net


web.config re


<connectionStrings>
    <add name="inductionConnectionString" connectionString="Data Source=SWASHDBS\SWASHSQLINT;Initial Catalog=RcmSite;Persist Security Info=True;User ID=induction;Password=swash@2015" providerName="System.Data.SqlClient"/>
    <!--<add name="inductionConnectionString" connectionString="Data Source=swash.database.windows.net;Initial Catalog=RcmSite;Persist Security Info=True;User ID=swashDB_Admin;password=Swash@2016" providerName="System.Data.SqlClient" />-->
  </connectionStrings>
===========================
add in .cs file
  string inductionConnectionString = ConfigurationManager.ConnectionStrings["inductionConnectionString"].ConnectionString;
    SqlConnection con = new SqlConnection();
    SqlCommand cmd = new SqlCommand();
    SqlDataAdapter da = null;
    DataSet ds = null;


with in page_load

{

 string[] filePaths = Directory.GetFiles(Server.MapPath("~/AttatchPath/"));
            List<ListItem> files = new List<ListItem>();
            foreach (string filePath in filePaths)
            {
                files.Add(new ListItem(Path.GetFileName(filePath), filePath));
            }


with in button_Save event
{

string fileName = Path.GetFileName(fileUpload1.PostedFile.FileName);
                fileUpload1.PostedFile.SaveAs(Server.MapPath("~/AttatchPath/") + result + "-" + fileName);
                Session["fileName"] = "~/AttatchPath/" + result + "-" + fileName;

                if (Session["fileName"] != null || fileUpload1.HasFile)
                {

last re.....
cmd.Connection = con;
                    con.Open();
                    int k = cmd.ExecuteNonQuery();

 if (k != 0)
                    {
                        mailsent();
                        Response.Write("<script>alert('Inserted Data Succesfully')</script>");
                        Session["fileName"] = "";
                        Session["fileName"] = null;
                        Clear();
                    }
                    con.Close();
}

 protected void btnUpload_Click(object sender, EventArgs e)
    {
        try
        {
            string fileName = Path.GetFileName(fileUpload1.PostedFile.FileName);
            fileUpload1.PostedFile.SaveAs(Server.MapPath("~/AttatchPath/") + fileName);
            ViewState["fileName"] = fileName;
            //Response.Redirect(Request.Url.AbsoluteUri);
        }
        catch (Exception)
        {
        }
    }
}
}



====================================
Design page

 <h1>Documents</h1>
                                <div style="margin-bottom: 2%"></div>
                                <asp:FileUpload ID="fileUpload1" runat="server" /><br />
                                <div style="margin-bottom: 1%"></div>
                                <asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" Visible="false" />
                                <asp:Label ID="lblMessage" runat="server"></asp:Label>
                                <asp:RequiredFieldValidator ID="rfvFileupload" ValidationGroup="FormDefault" runat="server" Display="Dynamic"
                                    ErrorMessage="Please attach a file" ForeColor="Red" ControlToValidate="fileUpload1"></asp:RequiredFieldValidator>




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