Hello Daniel,
Maybe be this can help you to see what's is going on (because my project is big and related to a real database) :
The partial view FicheDescriptive (.aspx)
The second partial view
<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" Culture="auto:fr-CA" UICulture="auto:fr-CA" %>
<%@ Register Assembly="Telerik.ReportViewer.WebForms, Version=6.0.12.215, Culture=neutral, PublicKeyToken=a9d7983dfcc261be" Namespace="Telerik.ReportViewer.WebForms" TagPrefix="telerik" %>
<!-- The styles of the web report viewer's toolbar are messed up. Check for run...="serv..." attribute in the web page's head tag - it is required.-->
<head id="Head1" runat="server">
</head>
<form id="form1" runat="server">
<telerik:ReportViewer ID="ReportViewerProcedure"
runat="server" BorderStyle="Solid" BorderWidth="1"
Report="Rapports.Procedure.ProcedureIntervention.ProcedureIntervention, Rapports, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"
Width="100%" onload="ReportViewerProcedureIntervention_Load"
Height="500px" ViewMode="PrintPreview" ProgressText="<%$ Resources:GlobalesResources, GenerationDuRapport %>">
</telerik:ReportViewer>
</form>
<script runat="server">
protected void ReportViewerProcedureIntervention_Load(object sender, EventArgs e)
{
Telerik.Reporting.Report report = (Telerik.Reporting.Report)this.ReportViewerProcedure.Report;
report.ReportParameters["strNoFiche"].Value = ViewData["NoFiche"].ToString();
}
</script>