從ASP.net代碼隱藏中創建和調用JavaScript函數應該是undefined

我想從代碼隱藏中執行JavaScript函數（例如作爲服務器端按鈕單擊事件），並且觸發按鈕位於內部一個UpdatePanel。我已經寫了兩個方法吧：從ASP.net代碼隱藏中創建和調用JavaScript函數應該是undefined

public static void Redirect(UpdatePanel updatePanelOrThis, string destinationUrl, 
            NameValueCollection data) 
     { 
      string strForm = PreparePOSTForm(destinationUrl, data); 
      ScriptManager.RegisterClientScriptBlock(updatePanelOrThis, updatePanelOrThis.GetType(), "redirectscript", 
         "<script language='javascript' type='text/javascript'> postToPage();</script>", false); 
     } 
     private static String PreparePOSTForm(string url, NameValueCollection data) 
     { 
      string jscriptString = "<script language=" + "\"" + "javascript" + "\"" + " type=" + "\"" + "text/javascript" + "\"" + ">" + 
      "function postToPage() " + "{" + "var form = document.createElement(" + "\"" + "form" + "\"" + ");" + 
      "form.setAttribute(" + "\"" + "method" + "\"" + ", " + "\"" + "POST" + "\"" + ");" + 
      "form.setAttribute(" + "\"" + "action" + "\"" + ", " + "\"" + url + "\"" + ");" + 
      "form.setAttribute(" + "\"" + "target" + "\"" + ", " + "\"" + "_self" + "\"" + ");"; 

      int counter = 0; 
      foreach (string key in data) 
      { 
       jscriptString += "var hiddenField" + counter.ToString() + " = document.createElement(" + "\"" + "input" + "\"" + ");" + 
      "hiddenField" + counter.ToString() + ".setAttribute(" + "\"" + "name" + "\"" + ", " + "\"" + key + "\"" + ");" + 
      "hiddenField" + counter.ToString() + ".setAttribute(" + "\"" + "value" + "\"" + ", " + "\"" + data[key] + "\"" + ");" + 
      "form.appendChild(hiddenField" + counter.ToString() + ");"; 
       counter++; 
      } 

      jscriptString += "document.body.appendChild(form);form.submit();document.body.removeChild(form);}</script>"; 
      return jscriptString; 
     }

當我呼叫重定向的方法，我看到在瀏覽器控制檯

Uncaught ReferenceError: postToPage is not defined

錯誤。

我還測試了與RegisterStartupScript重定向方法，但錯誤並沒有消失。

我的方法有什麼問題？

來源

2014-08-31 Farshid

一個錯誤，我在這個代碼中看到的是在這條線'string strForm = PreparePOSTForm（destinationUrl，data）;'strForm'沒有在任何地方使用 – Aristos 2014-08-31 10:07:18

謝謝@Aristos你的線索解決了這個問題 – Farshid 2014-08-31 10:12:31

然後我給它一個答案。 – Aristos 2014-08-31 10:30:42

一個「錯誤」我的代碼中看到的是，你沒有在任何地方使用包含腳本，最後一個字符串，在這條線：

string strForm = PreparePOSTForm(destinationUrl, data);

來源

2014-08-31 10:31:35 Aristos

從ASP.net代碼隱藏中創建和調用JavaScript函數應該是undefined

回答

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