rdlc上的外部图像报告给出错误

时间:2014-01-22 10:32:09

标签: c# asp.net image reporting-services rdlc

我有一个报告,我想根据服务组使用外部图像显示。有3个服务组,每个服务组都有自己的标题(标题会相应更改)...问题是,我收到错误:

  

本地报告处理期间发生错误。

     

报告'CustQuote'包含外部图像。尚未为此报告设置EnableExternalImages属性。

我在代码和reportviewer上都将属性设置为true,但仍然出现错误....

以下是我在代码中加载图片所做的工作:

    private void PopulateImage()
    {
        try
        {
            cn = new SqlConnection(GetConnectionString());
            SqlCommand myCmd = new SqlCommand("SELECT * FROM [Chargeables_CustQuote] WHERE ID = 8", cn);

            cn.Open();
            SqlDataReader myReader = myCmd.ExecuteReader();

            if (myReader.HasRows)
            {
                    while (myReader.Read())
                    {

                        string serv = myReader["ServiceGroup"].ToString();
                        if (myReader["ServiceGroup"].ToString() == "BCX")
                        {
                            ReportParameter paramLogo = new ReportParameter();
                            paramLogo.Name = "Path";
                            paramLogo.Values.Add(Server.MapPath("~\\Images\\SOSLetterhead.png"));

                            rtpViewer.LocalReport.SetParameters(paramLogo);
                            rtpViewer.LocalReport.EnableExternalImages = true;
                            rtpViewer.LocalReport.Refresh();                              
                        }
                    }
            }
            cn.Close();
            myReader.Close();

        }
        catch (System.Data.SqlClient.SqlException ex)
        {
            string msg = "Select Error:";
            msg += ex.Message;
            throw new Exception(msg);
        }
    }

     protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            runRptViewer();
            PopulateImage();

        }
    }

这是我的报告查看器的样子:

        <div>
<rsweb:ReportViewer ID="rtpViewer" runat="server" Font-Names="Verdana" Font-Size="8pt" WaitMessageFont-Names="Verdana" WaitMessageFont-Size="14pt" Width="952px" Height="807px"

EnableExternalImages = “真” &GT;                                                                                                                                                                            

          <asp:ObjectDataSource ID="ObjectDataSource3" runat="server" SelectMethod="GetData" TypeName="SOSDataSetTableAdapters.VCustomerbaseTableAdapter"></asp:ObjectDataSource>
         <asp:ObjectDataSource ID="ObjectDataSource2" runat="server" SelectMethod="GetData" TypeName="SOSDataSetTableAdapters.Chargeables_ItemsTableAdapter"></asp:ObjectDataSource>
         <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetData" TypeName="SOSDataSetTableAdapters.Chargeables_CustQuoteTableAdapter"></asp:ObjectDataSource>

</div>

对于rdlc报告中的image属性,source已设置为External,Value已设置为=Parameters!Path.Value (这是我创建的参数)。该参数使用DataType文本制作,名称为Path...

1 个答案:

答案 0 :(得分:1)

SetParameters只需ReportParameterCollection ReportParameter

它应该是这样的(未经测试):

ReportParameterCollection params = new ReportParameterCollection();
params.Add(new ReportParameter("Path", Server.MapPath("~\\Images\\SOSLetterhead.png")));
rtpViewer.LocalReport.SetParameters(params);