Exportation de page, pb d'insertion d'images

Salut ici.
Je vous soumets un problème qui traine depuis une bonne semaine, maintenant.
le code-behind est du vb.Net, sauf l'export du doc, en C#
certains des éléments de la page qui me pose problème sont construits dynamiquement (un tableau, mais surtout 3 images - des graphiques de stats).
Dans la page ASPX, j'ai une balise image, sans source. cette source est définie dynamiquement,d ans le code.
La page web finale s'affiche très bien, mais l'export en .doc ou .pdf (j'ai travaillé sur les deux) se fait bien SAUF que les images n'y sont pas (petite case avec la croix).

- La page aspx jusqu'à l'affichage de la première image (les autres sont sur le même modèle) :

Code:

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<form id="Form1" method="post" runat="server">
			<P><FONT style="BACKGROUND-POSITION: center center; BACKGROUND-REPEAT: no-repeat" color="white"><FONT face="Verdana" color="#006666" size="4">
						<asp:Label id="titre" runat="server"></asp:Label><STRONG>&nbsp;</STRONG>
						<asp:Label id="soc" runat="server"></asp:Label>&nbsp;- Du
						<asp:label id="debut" runat="server"></asp:label>&nbsp;au
						<asp:label id="fin" runat="server"></asp:label></FONT></FONT><FONT style="BACKGROUND-POSITION: center center; BACKGROUND-REPEAT: no-repeat" color="white"><FONT face="Verdana" color="#006666" size="4">
						<STRONG>
							<HR SIZE="1">
						</STRONG>
						<P></P>
						<P></P>
						<P></P>
						<P><FONT style="COLOR: #000000" size="3"><FONT style="COLOR: #000000" face="Verdana" size="2">
									<asp:LinkButton id="lk_pdf" runat="server" Font-Size="X-Small">Exporter la page complète vers WORD</asp:LinkButton>
								</FONT></FONT><FONT style="COLOR: #000000" size="3"><FONT style="COLOR: #000000" face="Verdana" size="2">
						</P>
						<P>
							<asp:Label id="p1" runat="server"></asp:Label>
						&nbsp;</FONT>
					<asp:label id="nbre_ass_total" runat="server" Font-Size="X-Small" Font-Names="Verdana" Font-Bold="True"></asp:label><FONT face="Verdana" size="2">&nbsp;
					</FONT>
					<asp:hyperlink id="ass_soc_fond" runat="server" Font-Size="X-Small" Font-Names="Verdana" NavigateUrl="javascript:;"></asp:hyperlink><FONT face="Verdana" size="2">&nbsp;
						<asp:Label id="p3" runat="server"></asp:Label>&nbsp; </FONT>
					<asp:label id="total3" runat="server" Font-Size="X-Small" Font-Names="Verdana" Font-Bold="True"></asp:label><FONT face="Verdana" size="2">&nbsp;
						<asp:Label id="p4" runat="server"></asp:Label>.
						<BR>
					</FONT>
					<asp:Label id="p5" runat="server" Font-Size="X-Small"></asp:Label>&nbsp;
					<asp:label id="label_nbre_ass_non" runat="server" Font-Size="X-Small" Font-Names="Verdana"
						Font-Bold="True"></asp:label><FONT face="Verdana" size="2">&nbsp;
						<asp:Label id="p6" runat="server"></asp:Label>
						&nbsp; </FONT>
					<asp:label id="pourcent_total" runat="server" Font-Size="X-Small" Font-Names="Verdana" Font-Bold="True"></asp:label><BR>
					<FONT face="Verdana" size="2">
						<asp:Label id="p7" runat="server"></asp:Label>
						&nbsp;: </FONT>
					<asp:label id="oui" runat="server" Font-Size="X-Small" Font-Names="Verdana"></asp:label><FONT face="Verdana" size="2">&nbsp;sur
					</FONT>
					<asp:label id="total2" runat="server" Font-Size="X-Small" Font-Names="Verdana"></asp:label><FONT face="Verdana" size="2">, 
						soit </FONT>
					<asp:label id="pourcentoui" runat="server" Font-Size="X-Small" Font-Names="Verdana" Font-Bold="True"></asp:label><FONT face="Verdana" size="2">.<BR>
						<asp:Label id="p8" runat="server"></asp:Label>
						&nbsp;: </FONT>
					<asp:label id="non" runat="server" Font-Size="X-Small" Font-Names="Verdana"></asp:label><FONT face="Verdana" size="2">&nbsp;sur
					</FONT>
					<asp:label id="total1" runat="server" Font-Size="X-Small" Font-Names="Verdana"></asp:label><FONT face="Verdana" size="2">, 
						soit&nbsp;</FONT>
					<asp:label id="pourcentnon" runat="server" Font-Size="X-Small" Font-Names="Verdana" Font-Bold="True"></asp:label><FONT face="Verdana" size="2">.
					</FONT></FONT>
			</P>
			<FONT size="3">
				<P style="COLOR: #006666">
					<asp:label id="option1" runat="server" Font-Size="X-Small" Font-Names="Verdana" Visible="False"></asp:label>
					<asp:label id="Label2" runat="server" Font-Size="X-Small" Font-Names="Verdana" Visible="False"></asp:label><FONT face="Verdana" size="2">
						<asp:label id="mot1" runat="server" Visible="False"> sur </asp:label></FONT>
					<asp:label id="total4" runat="server" Font-Size="X-Small" Font-Names="Verdana" Visible="False"></asp:label><FONT face="Verdana" size="2">
						<asp:label id="mot2" runat="server" Visible="False"> soit </asp:label>&nbsp;</FONT>
					<asp:label id="pourcentov" runat="server" Font-Size="X-Small" Font-Names="Verdana" Font-Bold="True"
						Visible="False"></asp:label>
			</FONT>
			<BR>
			</P>
			<P>
				<asp:image id="ouinon" runat="server"></asp:image></P>
			<P></P>
			<STRONG>
				<HR SIZE="1">
			</STRONG>
			<P></P>
			<P></P>
			<P><FONT face="Verdana" size="2"></FONT></P>
			<P><FONT face="Verdana" size="2">
					<asp:label id="soustitre1" runat="server" Font-Bold="True" Font-Names="Verdana" Font-Size="X-Small"
						ForeColor="#006666"></asp:label><STRONG>&nbsp; </STRONG>
					<asp:hyperlink id="type_resolution" runat="server" NavigateUrl="javascript:;"></asp:hyperlink><STRONG>&nbsp;</STRONG></P>
			<P>
				<asp:table id="Table1" runat="server" Font-Size="XX-Small" Font-Names="Verdana" CellPadding="2"
					BorderWidth="1px" BorderStyle="Groove" GridLines="Both">
					<asp:TableRow BorderStyle="Groove" ForeColor="White" BackColor="#006666" Font-Size="XX-Small"
						Font-Names="Verdana" Font-Bold="True">
						<asp:TableCell Text="Type de résolution"></asp:TableCell>
						<asp:TableCell Text="Oui"></asp:TableCell>
						<asp:TableCell Text="Non"></asp:TableCell>
						<asp:TableCell Text="Abstention"></asp:TableCell>
					</asp:TableRow>
				</asp:table></P>
			<P>
				<asp:image id="reso_graph" runat="server"></asp:image></P>
			<P><FONT style="COLOR: #000000" face="Verdana" size="2">
					<asp:label id="soustitre2" runat="server" Font-Bold="True" Font-Names="Verdana" Font-Size="X-Small"
						ForeColor="#006666"></asp:label></FONT></P>
			<P>
				<asp:image id="repart_graph" runat="server"></asp:image></P>
			<P></P>
			<STRONG>
				<HR SIZE="1">
			</STRONG>
			<P></P>
			<P></P>
			<P></FONT><STRONG>
					<asp:label id="soustitre3" runat="server" Font-Bold="True" Font-Names="Verdana" Font-Size="X-Small"
						ForeColor="#006666"></asp:label>&nbsp; </STRONG>
				<asp:dropdownlist id="Dropdownlist2" runat="server" AutoPostBack="True">
					<asp:ListItem Value="0" Selected="True">Toutes Assemblées</asp:ListItem>
				</asp:dropdownlist>&nbsp;
				<asp:LinkButton id="LinkButton2" runat="server" Font-Names="Verdana" Font-Size="X-Small"></asp:LinkButton>&nbsp;</P>
			<P>
				<asp:datagrid id="DataGrid1" runat="server" CellPadding="4" BorderWidth="3px" BorderStyle="Double"
					Width="100%" AutoGenerateColumns="False" BackColor="White" BorderColor="#006666" 
                    ViewStateMode="Enabled">
					<FooterStyle ForeColor="#333333" BackColor="White"></FooterStyle>
					<SelectedItemStyle Font-Bold="True" ForeColor="White" BackColor="#339966"></SelectedItemStyle>
					<AlternatingItemStyle Font-Names="Verdana" BackColor="Honeydew"></AlternatingItemStyle>
					<ItemStyle Font-Size="XX-Small" Font-Names="Verdana" ForeColor="#333333" BackColor="White"></ItemStyle>
					<HeaderStyle Font-Size="XX-Small" Font-Names="Verdana" Font-Bold="True" HorizontalAlign="Center"
						ForeColor="White" VerticalAlign="Middle" BackColor="#006666"></HeaderStyle>
					<Columns>
						<asp:BoundColumn DataField="Raison sociale" HeaderText="Raison Sociale">
							<ItemStyle Font-Bold="True" HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
						</asp:BoundColumn>
						<asp:TemplateColumn HeaderText="Date">
							<ItemTemplate>
								<asp:label id="d" runat="server" OnDataBinding="date_load" text='<%# DataBinder.Eval(Container, "DataItem.Date_Assemblee") %>'>
								</asp:label>
							</ItemTemplate>
						</asp:TemplateColumn>
						<asp:BoundColumn DataField="ResolutionNumberTag" HeaderText="N°">
							<ItemStyle Font-Bold="True" HorizontalAlign="Center" ForeColor="#006666" VerticalAlign="Middle"></ItemStyle>
						</asp:BoundColumn>
						<asp:BoundColumn DataField="Libellé" HeaderText="Résumé Résolution"></asp:BoundColumn>
						<asp:BoundColumn DataField="Libellé résolution" HeaderText="Type Résolution">
							<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
						</asp:BoundColumn>
						<asp:TemplateColumn HeaderText="Vote">
							<ItemStyle Font-Bold="True" HorizontalAlign="Center" ForeColor="#006666" VerticalAlign="Middle"></ItemStyle>
							<ItemTemplate>
								<asp:Label runat="server" ondatabinding="text_load" text='<%# DataBinder.Eval(Container, "DataItem.vote_client") %>' ID="Label5">
								</asp:Label>
							</ItemTemplate>
						</asp:TemplateColumn>
						<asp:BoundColumn DataField="comment" HeaderText="Commentaires"></asp:BoundColumn>
						<asp:BoundColumn Visible="False" DataField="un" HeaderText="un"></asp:BoundColumn>
						<asp:BoundColumn DataField="Libellé type" HeaderText="Catégorie Résolution">
							<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
							<FooterStyle Font-Size="XX-Small" HorizontalAlign="Center" VerticalAlign="Middle"></FooterStyle>
						</asp:BoundColumn>
					    <asp:BoundColumn DataField = "spécifique6" Visible="False"><ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Font-Italic = "true"/></asp:BoundColumn>
                        <asp:BoundColumn DataField = "code_ov" Visible="False"><ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Font-Italic = "true"/></asp:BoundColumn>
                        <asp:BoundColumn DataField = "cause" HeaderText = "Cause" Visible="False"></asp:BoundColumn>
					</Columns>
					<PagerStyle HorizontalAlign="Center" ForeColor="White" BackColor="#336666" Mode="NumericPages"></PagerStyle>
				</asp:datagrid></P>
			<P><STRONG>
		</form>

Le code-behind (les valeurs de xrepart, texte, total et grandeur sont définies dans tableau(), pas d'incidence ici):

Code:

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Imports ASPNET.StarterKit.Chart
Imports System.IO
Imports System.Drawing.Imaging
Imports System.Drawing
Imports System
 
Partial Class Statistiques_SG
    Inherits System.Web.UI.Page
 
    Dim date_debut, date_fin As Date
    Dim with_ov As Boolean
    Dim ds As DataSet
    Dim ds_type_resolution As DataSet
    Dim ds_votes_non As DataSet
    Dim ds_assemblees As DataSet
 
    Public session_opcvm As Statistiques.Opcvm.type_opcvm
    Public session_client As Statistiques.Client.type_client
    Public s As Statistiques.Stats.Stats = New Statistiques.Stats.Stats
    Public c As Statistiques.Client.Client = New Statistiques.Client.Client
    Public o As Statistiques.Opcvm.Opcvm = New Statistiques.Opcvm.Opcvm
 
    Public self As Statistiques.Configuration.statistiques
    Public cfg As Statistiques.Configuration.Configuration = New  _
                                                Statistiques.Configuration.Configuration
 
    Protected WithEvents LinkButton1 As System.Web.UI.WebControls.LinkButton
    Protected WithEvents DropDownList1 As System.Web.UI.WebControls.DropDownList
    Public v As Statistiques.Vote.Vote = New Statistiques.Vote.Vote
 
    Dim texte As String
    Dim grandeur As String
    Dim total As String
    Dim xrepart As String
 
    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
 
        session_client = c.charge_client(Request.QueryString("codecli"), Configuration.type_langage.FR)
 
        self = cfg.Charge_Statistiques(Configuration.type_langage.FR)
 
        If Not IsPostBack Then
 
            DataGrid1.AutoGenerateColumns = False
            Dim indexvote As Integer
 
            titre.Text = self.titre
            soc.Text = session_client.login
            debut.Text = Request.QueryString("date_debut")
            fin.Text = Request.QueryString("date_fin")
            soustitre1.Text = self.soustitre1
            soustitre2.Text = self.soustitre2
            soustitre3.Text = self.soustitre3
            type_resolution.Text = self.lien_typologie
            LinkButton2.Text = self.lien_excel
            p1.Text = self.p1
            ass_soc_fond.Text = self.p2
            p3.Text = self.p3
            p4.Text = self.p4
            p5.Text = self.p5
            p6.Text = self.p6
            p7.Text = self.p7
            p8.Text = self.p8
 
            ass_soc_fond.Attributes.Add("onclick", "window.open('Stats_Assemblee.aspx?codeclient=" & session_client.code_client & "&codeopcvm=0" & "&date_debut=" & debut.Text & "&date_fin=" & fin.Text & "',null,'height=600, width=800,status= no, resizable= no, scrollbars=yes, toolbar=no,location=no,menubar=no ');")
 
            type_resolution.Attributes.Add("onclick", "window.open('Stats_categories.aspx?codeclient=" & session_client.code_client & "&codeopcvm=0" & "&date_debut=" & debut.Text & "&date_fin=" & fin.Text & "',null,'height=600, width=800,status= no, resizable= no, scrollbars=yes, toolbar=no,location=no,menubar=no ');")
 
            'Dim col_vote As BoundColumn = New BoundColumn
            'Dim col_cause As BoundColumn = New BoundColumn
 
            'With col_vote
            '    .ItemStyle.HorizontalAlign = HorizontalAlign.Center
            '    .ItemStyle.VerticalAlign = VerticalAlign.Middle
            '    .ItemStyle.Font.Italic = True
            'End With
 
            If CInt(session_client.code_type_contrat) > 4 Then
                If Request.QueryString("mode") = 0 Then
                    option1.Visible = False
                    with_ov = False
                    'col_vote.DataField = "spécifique6"
                    DataGrid1.Columns.Item(9).HeaderText = self.libelle_proxy_adviser
                    DataGrid1.Columns.Item(9).Visible = True
                    DataGrid1.Columns.Item(10).Visible = False
                    DataGrid1.Columns.Item(11).Visible = False
                    indexvote = 9
 
                    ' Si comparaison avec Politique Prox
                ElseIf Request.QueryString("mode") = 1 Then
                    option1.Visible = True
                    option1.Text = self.msg_divergence_proxyadviser
                    Label2.Visible = True
                    total4.Visible = True
                    pourcentov.Visible = True
                    mot1.Visible = True
                    mot2.Visible = True
                    with_ov = False
                    'col_vote.DataField = "spécifique6"
                    DataGrid1.Columns.Item(9).HeaderText = self.libelle_proxy_adviser
                    DataGrid1.Columns.Item(9).Visible = True
                    DataGrid1.Columns.Item(10).Visible = False
                    DataGrid1.Columns.Item(11).Visible = False
                    indexvote = 9
 
                    ' Si comparaison avec OV client
                ElseIf Request.QueryString("mode") = 2 Then
                    option1.Visible = True
                    option1.Text = self.msg_divergence_client
                    Label2.Visible = True
                    total4.Visible = True
                    pourcentov.Visible = True
                    mot1.Visible = True
                    mot2.Visible = True
                    with_ov = True
                    'col_vote.DataField = "code_ov"
                    DataGrid1.Columns.Item(10).HeaderText = self.libelle_politique_predefinie
                    DataGrid1.Columns.Item(10).Visible = True
                    DataGrid1.Columns.Item(9).Visible = False
                    DataGrid1.Columns.Item(11).Visible = True
                    indexvote = 10
                    'col_cause.DataField = "cause"
                    'col_cause.HeaderText = "Cause"
                End If
            End If
 
            Label2.Text = "0"
 
            ' Recuperation de tous les votes sur toutes les assemblées
            ds = s.Assemblee_Vote_Fond("0", _
                                       session_client.code_client, _
                                       CDate(debut.Text), _
                                       CDate(fin.Text), with_ov, Configuration.type_langage.FR)
 
            Dim dv As New DataView(ds.Tables(0))
            Session("dv") = dv
 
            DataGrid1.DataSource = dv
            DataGrid1.DataBind()
 
            ' Recuperation des types de resolution
            ds_type_resolution = s.Charge_Grid_Stats("0", _
                                       session_client.code_client, _
                                       CDate(debut.Text), _
                                       CDate(fin.Text), Stats.type_typologie.AMF, with_ov, Configuration.type_langage.FR)
 
            Dim dv2 As New DataView(ds_type_resolution.Tables(0))
            Session("dv2") = dv2
 
            gridstat.DataSource = dv2
            gridstat.DataBind()
 
            ' Recuperation du dataset avec les asssemblees avec vote NON enregistré
            ds_votes_non = s.Assemblee_Vote_Non("0", _
                                       session_client.code_client, _
                                       CDate(debut.Text), _
                                       CDate(fin.Text), with_ov, Configuration.type_langage.FR)
 
            ' Recuperation du dataset avec les assemblees concernée par le fond
            ds_assemblees = s.Liste_Vote_Assemblee("0", _
                                       session_client.code_client, _
                                       CDate(debut.Text), _
                                       CDate(fin.Text), Configuration.type_langage.FR)
 
            label_nbre_ass_non.Text = ds_votes_non.Tables(0).Rows.Count()
            nbre_ass_total.Text = ds_assemblees.Tables(0).Rows.Count()
 
            charge_liste_assemblee()
 
            If session_client.code_type_contrat > 5 Then
                If with_ov = False Then
                    Normalize_Vote_Prox(9)
                Else
                    Normalize_Vote_Cli(10)
                End If
 
                ov(indexvote)
            End If
 
            calcul()
 
        End If
        tableau()
 
        Dim image As Graphique = New Graphique
        If CType(nbre_ass_total.Text, Integer) > 0 Then
            image.CreateImage("Votes oui,Votes non", xrepart, True, "ouinon.png", session_client.code_client)
            image.CreateImage(texte.Substring(1), total.Substring(1), False, "resograph.png", session_client.code_client)
            image.CreateImage(texte.Substring(1), grandeur.Substring(1), False, "repartgraph.png", session_client.code_client)
            ouinon.ImageUrl = "http://192.168.0.71/Client/" & session_client.code_client & "/ouinon.png"
            reso_graph.ImageUrl = "http://192.168.0.71/Client/" & session_client.code_client & "/resograph.png"
            repart_graph.ImageUrl = "http://192.168.0.71/Client/" & session_client.code_client & "/repartgraph.png"
        Else
            ouinon.Visible = False
            reso_graph.Visible = False
            repart_graph.Visible = False
        End If
 
    End Sub

La création des images :

Code:

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Imports ASPNET.StarterKit.Chart
Imports System.IO
Imports System.Drawing.Imaging
Imports System.Drawing
Imports System
 
Public Class Graphique
 
    Public Sub CreateImage(ByVal xValues As String, ByVal yValues As String, ByVal print As Boolean, ByVal name As String, ByVal codecli As String)
        Dim charttype As String = "pie"
        Dim stockbitmap As Bitmap
        Dim imageuri As String = "D:\www\europroxy.com\Client\" & codecli & "\" & name
 
        If Not (xValues Is Nothing) And Not (yValues Is Nothing) Then
            Dim bgColor As Color
            bgColor = Color.White
            Dim pc As PieChart
 
            If print Then
                pc = New PieChart
            Else
                pc = New PieChart(bgColor)
            End If
 
            pc.CollectDataPoints(xValues.Split(",".ToCharArray()), yValues.Split(",".ToCharArray()))
            stockbitmap = pc.Draw()
            stockbitmap.Save(imageuri, ImageFormat.Png)
        End If
 
    End Sub
 
End Class

Et l'export en .doc pour Word(c) :

Code:

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using ExpertPdf.HtmlToPdf;
using System.Net;
using System.Text;
using System.IO;
 
 
public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        String page, client, mode, date_debut, date_fin, fond;
        String final_url;
        //String target_fic, pdf_fic;
 
 
        page = Request.QueryString["page"];
        client = Request.QueryString["codecli"];
        mode = Request.QueryString["mode"];
        date_debut = Request.QueryString["date_debut"];
        date_fin = Request.QueryString["date_fin"];
 
        if (page == "Statistiques_Fond.aspx")
        {
            fond = Request.QueryString["fond"];
 
            final_url = "http://xxxxxxxxx/Statistiques/" + page + "?codecli=" + client + "&fond=" + fond + "&mode=" + mode + "&date_debut=" + date_debut + "&date_fin=" + date_fin;
        }
        else
        {
            final_url = "http://xxxxxxxxx/Statistiques/" + page + "?codecli=" + client + "&mode=" + mode + "&date_debut=" + date_debut + "&date_fin=" + date_fin;
        }
        HttpWebResponse httpWResponse = null;
        HttpWebRequest httpWRequest = (HttpWebRequest)WebRequest.Create(final_url);
        httpWResponse = (HttpWebResponse)httpWRequest.GetResponse();
 
        //System.IO.Stream sr = httpWResponse.GetResponseStream();
 
        //target_fic = Server.MapPath("/client/" + client + "/stats.pdf");
 
        //pdf_fic = "http://xxxxxxxxx/client/" + client + "/stats.pdf";
 
        //PdfConverter pdfConverter = new PdfConverter();
 
        //pdfConverter.LicenseKey = "WKm9pJUz7Cyom7S/aUNC2xI5AVEk3VjQLR+Y+d28B5IPW2uE1YgXuMIqBvTviaK5";
        //pdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
        //pdfConverter.PdfDocumentOptions.PdfCompressionLevel = PdfCompressionLevel.Normal;
        //pdfConverter.PdfDocumentOptions.LeftMargin = 20;
        //pdfConverter.PdfDocumentOptions.RightMargin = 20;
        //pdfConverter.PdfDocumentOptions.TopMargin = 20;
        //pdfConverter.PdfDocumentOptions.BottomMargin = 20;
 
        //pdfConverter.PdfDocumentOptions.GenerateSelectablePdf = false;
        //pdfConverter.PdfDocumentOptions.ShowHeader = false;
        //pdfConverter.PdfDocumentOptions.ShowFooter = false;
        //pdfConverter.PdfSecurityOptions.CanPrint = true;
        //pdfConverter.PdfSecurityOptions.CanEditContent = false;
 
        ////byte[] downloadBytes = pdfConverter.GetPdfFromUrlBytes(final_url);
 
        ////pdfConverter.SavePdfFromUrlToFile(final_url, target_fic);
        //pdfConverter.SavePdfFromHtmlStreamToFile(sr, Encoding.GetEncoding("utf-8"), target_fic);
 
        //Response.Redirect(pdf_fic);
 
        using (System.IO.StreamReader sr = new System.IO.StreamReader(httpWResponse.GetResponseStream(), System.Text.Encoding.UTF8))
        {
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.Charset = "";
            HttpContext.Current.Response.ContentType = "application/msword";
            string strFileName = "test" + ".doc";
            HttpContext.Current.Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
            StringBuilder strHTMLContent = new StringBuilder();
            strHTMLContent.Append(sr.ReadToEnd());
            HttpContext.Current.Response.Write(strHTMLContent);
            HttpContext.Current.Response.End();
            HttpContext.Current.Response.Flush();
        }
    }
}

Je ne sais pas si c'est le type de l'image (ou plutôt la façon dont elle est construite puis insérée dans la page) ou bien la méthode d'export qui n'est pas convenable...