雖然從與C＃

Question

asp.net中繼器控制打印數據的同時，我使用從中繼打印數據I得到這個錯誤

「RegisterForEventValidation只能在渲染（）被調用;」

我已經在頁面指令 設置EnableEventValidation =「假」，並在我的網頁標籤內的應用程序的web.config文件

這裏是我使用該

public static void PrintWebControl(Control ctrl, string Script) 
{ 

    StringWriter stringWrite = new StringWriter(); 

    HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite); 

    if (ctrl is WebControl) 
    { 

     Unit w = new Unit(50, UnitType.Pixel); 

     ((WebControl)ctrl).Width = w; 

    } 

    Page pg = new Page();  


    if (Script != string.Empty) 
    { 

     pg.RegisterStartupScript("PrintJavaScript", Script); 

    } 

    HtmlForm frm = new HtmlForm(); 

    pg.Controls.Add(frm); 

    frm.Attributes.Add("runat", "server"); 

    frm.Controls.Add(ctrl); 

    string scr = "<script>function window.onafterprint(){history.back(1);}</script>"; 

    htmlWrite.Write(scr); 



    pg.DesignerInitialize(); 

    pg.RenderControl(htmlWrite);  




    string strHTML = stringWrite.ToString(); 

    HttpContext.Current.Response.Clear(); 

    HttpContext.Current.Response.Write(strHTML); 

    HttpContext.Current.Response.Write("<script>window.print();</script>"); 

    HttpContext.Current.Response.End(); 

} 

Answer 1

覆蓋的代碼Render方法，並呼籲：

Page.ClientScript.RegisterForEventValidation(..) 

並傳入這裏定義的選項：http://msdn.microsoft.com/en-us/library/system.web.ui.clientscriptmanager.registerforeventvalidation.aspx

HTH。

Answer 2

替換行

Page pg = new Page();  

與

Page pg = new Page();    
pg.EnableEventValidation = false;