How to execute multiple ClientScript.RegisterStartupScript in ASP.NET c#?
I'm developing a gridview in which you can download multiple files with one button.
Here's my gridview:
<asp:GridView ID="grdvHistorialMensajes" runat="server" AllowPaging="True"
AutoGenerateColumns="False" CellPadding="4" AllowSorting="true"
EmptyDataText="No Hay Mensajes Enviados" ForeColor="#333333"
GridLines="None" CellSpacing="1"
onpageindexchanging="grdvHistorialMensajes_PageIndexChanging"
onrowcommand="grdvHistorialMensajes_RowCommand"
onsorting="grdvHistorialMensajes_Sorting">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:BoundField DataField="CorreoCliente" HeaderText="Correo Del Cliente" SortExpression="CorreoCliente" />
<asp:BoundField DataField="CorreosAdicionales" HeaderText="Correos Adicionales" SortExpression="CorreosAdicionales" />
<asp:BoundField DataField="Tema" HeaderText="Tema" SortExpression="Tema" />
<asp:BoundField DataField="Mensaje" HeaderText="Mensaje" SortExpression="Mensaje" />
<asp:TemplateField HeaderText="Fecha" SortExpression="Fecha">
<ItemTemplate>
<%# DataBinder.Eval(Container.DataItem, "Fecha", "{0:dd/MM/yyyy}")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbxFecha" runat="server" Text='<%#Bind("Fecha","{0:dd/MM/yyyy}") %>' ValidationGroup="gpEdicionAgenda">
</asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Hora" HeaderText="Hora" SortExpression="Hora" />
<asp:BoundField DataField="Archivos" HeaderText="Archivos" SortExpression="Archivos" />
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="imgBtnDescargarArchivos" runat="server"
CommandArgument='<%# Eval("IdMensaje")%>' CommandName="Descargar" Height="16px"
ImageUrl="~/img/activar.png" ToolTip="Descargar" Width="16px" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="imgBtnVerMas" runat="server"
CommandArgument='<%# Eval("IdMensaje")%>' CommandName="VerMas" Height="16px"
ImageUrl="~/img/search.png" ToolTip="Ver Mas" Width="16px" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
Whenever I click on the "Descargar" RowCommand, I originally used this:
if (e.CommandName == "Descargar")
{
DataTable dt = ConexionBD.GetInstanciaConexionBD().GetArchivosPorMensaje(Convert.ToInt32(e.CommandArgument));
foreach (DataRow dr in dt.Rows)
{
string strArchivo = dr["Nombre"].ToString();
string strExtension = Path.GetExtension(strArchivo).ToLower();
Response.Write("<script>window.open('/Archivos/" + strArchivo + "');</script>");
}
}
When I clicked, if that row had let's say 1 pdf, 1 jpg and 1 doc, it opened both the pdf and the jpg in a different window and the doc would be downloaded. That's exactly what I want. However, I noticed that whenever a new page is opened (in the case of the pdf and jpg) all the font in the page is altered. So I wanted to find a solution and then I tried this:
if (e.CommandName == "Descargar")
{
DataTable dt = ConexionBD.GetInstanciaConexionBD().GetArchivosPorMensaje(Convert.ToInt32(e.CommandArgument));
foreach (DataRow dr in dt.Rows)
{
string strArchivo = dr["Nombre"].ToString();
string strExtension = Path.GetExtension(strArchivo).ToLower();
ClientScript.RegisterStartupScript(this.GetType(), "myFileOpenScript", "<script>window.open('/Archivos/" + strArchivo + "');</script>");
}
}
When I open a pdf file, the font is not altered this time, however, It would only open/download the first file that appears int dt.Rows[0] (dt.Rows[1] on won't open). I suppose that a Response.Write can be deployed multiple times, however, a ClientScript.RegisterStartupScript probably can only be executed once.
Is there another method I can use to not alter the page's letter font and to open multiple files with a single click?
Or how could I execute ClientScript.RegisterStartupScript multiple times??
Thanks In Advance
Answer
A little extra information information would be helpful. You aren't limited from using RegisterStatupScript more than once, but you are limited from registering the same type/key combination more than once (this is a feature, not a limitation).
If you need to register different scripts, use a unique key. If you are simply doing a postback, re-registering the startup script will/should work.
http://msdn.microsoft.com/en-us/library/system.web.ui.clientscriptmanager.aspx