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no more post back after file download in sharepoint using -'c#,asp.net,sharepoint,download'


no more post back after file download in sharepoint  using -'c#,asp.net,sharepoint,download'

I tried to download a file from sharepoint.
But after I download this file, I can't click on other buttons.
What is wrong with my coding?

This is my first way.


            Response.AppendHeader("content-disposition", "attachment; filename= " + fileName);
            Response.ContentType = "text/plain";
            Response.WriteFile(Server.MapPath("~/" + fileName));
            Response.End();



This is my second way


            byte[] bytes = System.IO.File.ReadAllBytes("D:\\" + fileName);

            Response.ClearContent();
            Response.ClearHeaders();
            Response.AddHeader("Content-Type", "application/octet-stream");
            Response.AddHeader("Content-Length", bytes.Length.ToString());

            Response.AddHeader("content-disposition", "attachment; filename= " + fileName);

            Response.BinaryWrite(bytes);
            Response.Flush();
            Response.End();



I even comment Response.End() but still the same result.

Is there any other way I should tried?

Any help would be really appreciated.
In fact, I posted this question a few days ago, but only one gave me my second way to try but it is still not working.

Thanks.

UPDATE

Here is my GridView under GridView.

           <asp:GridView ID="gvGiro" Width="100%" runat="server" GridLines="Both" AllowPaging="false" CssClass="form-table" ShowHeader="false"
                AllowSorting="false" AutoGenerateColumns="false" OnRowDataBound="gvGiro_RowDataBound">
                <Columns>
                    <asp:TemplateField ItemStyle-Width="20%" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate>
                            <asp:Label ID="lblValueDate" Text='<%# getDate(Eval("ValueDate")) %>' runat="server" />
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField>
                        <ItemTemplate>

                            <asp:GridView ID="gvDetail" runat="server" AllowPaging="false" AllowSorting="false"
                                CssClass="list-table border" HeaderStyle-CssClass="header" AutoGenerateColumns="false">
                                <Columns>
                                    <asp:TemplateField HeaderText="Sequence Number" ItemStyle-HorizontalAlign="Left"
                                        ItemStyle-Width="30%" >
                                        <ItemTemplate>
                                            <%#((DataRowView)Container.DataItem)["MessageSeqNbr"] %>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField HeaderText="Total Number of Debit Transaction" ItemStyle-HorizontalAlign="Left"
                                        HeaderStyle-HorizontalAlign="Center">
                                        <ItemTemplate>
                                            <%#((DataRowView)Container.DataItem)["TotalDebitNbr"] %>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField HeaderText="Status" ItemStyle-HorizontalAlign="Left" ItemStyle-Width="25%"
                                        HeaderStyle-HorizontalAlign="Center">
                                        <ItemTemplate>
                                            <%#((DataRowView)Container.DataItem)["CodeDesc"] %>
                                            <asp:HiddenField ID="hidCode" runat="server" Value='<%#((DataRowView)Container.DataItem)["Code"] %>' />
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField HeaderText="Action" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%"
                                        HeaderStyle-HorizontalAlign="Center">
                                        <ItemTemplate>
                                        <asp:Button ID="btnDownload" runat="server" CssClass="button submit" Text="Download"
                                CommandName="download" OnCommand="onCmd" CommandArgument='<%#Eval("Id") %>' Width="80px"/>
                                        <asp:Button ID="btnUnbatch" runat="server" CssClass="button generic" Text="Un-Batch"
                                CommandName="unbatch" OnCommand="onCmd" CommandArgument='<%#Eval("Id") %>' Width="80px"/>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                </Columns>
                            </asp:GridView>
                        </ItemTemplate>
                    </asp:TemplateField>
                </Columns>
            </asp:GridView>


Here is my cs file

    protected void gvGiro_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        GridView gr;
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            gr = (GridView) e.Row.FindControl("gvDetail");
            using (class2 ct2= new Class2())
            {
                Label lblValueDate = (Label)e.Row.FindControl("lblValueDate");
                DateTime dt= DateTime.MinValue;
                DataSet ds= ct2.GetData(dt);
                gr.DataSource = ds;
                gr.DataBind();

            }

        }
    }


protected void onCmd(object sender, CommandEventArgs e)
    {
        string id;
        switch (e.CommandName)
        {
            case "unbatch":
                id= e.CommandArgument.ToString();
                Unbatch(id);
                break;
            case"download":
                id= e.CommandArgument.ToString();
                Download(id);
                break;
            default:
                break;
        }
    }

    protected void Download(string id)
    {
        // to do - substitute all hard-code guid
        Guid batchId = new Guid(id);
        string fileName = "";
        Class1 ct = new Class1();


        {
            if (!ct.FileExists(batchId , ref fileName))
            {
                byte[] bytes = System.IO.File.ReadAllBytes("D:\\" + fileName);
            Response.ClearContent();
            Response.ClearHeaders();
            Response.AddHeader("Content-Type", "application/octet-stream");
            Response.AddHeader("Content-Length", bytes.Length.ToString());
            Response.AddHeader("content-disposition", "attachment; filename= " + fileName);
            Response.BinaryWrite(bytes);
            Response.Flush();
            Response.End();
            }

    
asked Sep 7, 2015 by rajesh
0 votes
24 views



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