無過載的方法「渲染」需要1個參數

Question

這是我的代碼，我已經做了我的項目genrate PDF報表

public partial class Report : System.Web.UI.Page 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     if (!Page.IsPostBack) 
     { 
      getreport(); 
     } 
    } 
    public override void VerifyRenderingInServerForm(Control control) 
    { 
     // base.VerifyRenderingInServerForm(control); 

    } 


    public void getreport() 
    { 
     string province = Request.QueryString["Province"].ToString(); 
     string district = Request.QueryString["District"].ToString(); 
     string village = Request.QueryString["Village"].ToString(); 
     ReportViewer1.ProcessingMode = ProcessingMode.Local; 
     LocalReport rep = ReportViewer1.LocalReport; 
     rep.ReportPath = @"Report.rdlc"; 
     ReportDataSource dsRep = new ReportDataSource(); 
     dsRep.Name = "DataSet1"; 
     dsRep.Value = GetDataTable(province, district, village); 
     rep.DataSources.Clear(); 

     rep.DataSources.Add(dsRep); 
     //ReportViewer1.DocumentMapCollapsed = true; 
     //ReportViewer1.ShowPrintButton = true; 
     //rep.Render("PDF"); 
     byte[] result = null; 
     result = rep.Render("PDF"); 
     Response.ClearContent(); 
     Response.AppendHeader("content-length", result.Length.ToString()); 
     Response.ContentType = "application/pdf"; 
     Response.BinaryWrite(result); 
     Response.Flush(); 
     Response.Close(); 
     rep.Refresh(); 
    } 
    protected DataTable GetDataTable(string p,string d,string v) 
    { 
     SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["DBConnectionString"].ToString()); 
     DataTable dt; 
     SqlDataAdapter da; 
     SqlCommand cmd; 
     string filter = ""; 
     try 
     { 
      if (con.State == ConnectionState.Open) 
      { 
       con.Close(); 
      } 
      con.Open(); 
      cmd = new SqlCommand("select '" +p + "' as UserName, '"+d+"'Password,'"+ v+"' as category", con); 
      da = new SqlDataAdapter(cmd); 
      dt = new DataTable(); 
      da.Fill(dt); 
      cmd.Dispose(); 
      con.Close(); 
      return dt; 

     } 
     catch (Exception ex) 
     { 

      return null; 
     } 

} 

Answer 1

Render方法確實有一個overload that takes one parameter in .NET 4.0，但不是在previous versions。

您必須撥打(String, String, out String, out String, out String, out String[], out Warning[])過載如下。

string extension; 
string encoding; 
string mimeType; 
string extension; 
string[] streams; 
Warning[] warnings; 

result = rsExec.Render("PDF", null, 
      out extension, out encoding, 
      out mimeType, out streams, out warnings);