如何將此代碼片段轉換爲C＃

Question

我想弄清楚how to display confirm box when drop down list's selected indexchanged事件是否被解僱。

瀏覽通過一些論壇我遇到了以下解決方案，但我不知道如何使用它，因爲我在C＃工作。我如何使它工作？我甚至不確定這是否真的是解決我的問題的方法。有人請幫忙。謝謝。

Public Sub ConfirmOnChange() 
      'Register the script block 
      If Not IsStartupScriptRegistered("CSP-ddl-onchange") Then 
       RegisterStartupScript("CSP-ddl-onchange", _ 
        "<script language=""JavaScript"">" & _ 
        "var CSP_savedDDLID = " & _ 
        "document.getElementById('" & _ 
        ddl.ClientID & "').value;" & vbCrLf & _ 
        "function resetDDLIndex() {" & vbCrLf & _ 
        " document.getElementById('" & _ 
        ddl_Status.ClientID & "').value = CSP_savedDDLID;" & _ 
        vbCrLf & _ 
        "}" & vbCrLf & _ 
        "</script>") 
      End If 
      Dim msg As String = "'Do you want to change selection?';" 
      ddl_Status.Attributes("onchange") = _ 
      "if (!confirm('" & msg.Replace("'", "\'") & _ 
      "')) resetDDLIndex(); " 
     End Sub 

Answer 1

public void ConfirmOnChange() 
{ 
    //Register the script block 
    if(!IsStartupScriptRegistered("CSP-ddl-onchange")) 
    { 
     RegisterStartupScript("CSP-ddl-onchange", 
      "<script language=\"JavaScript\">" + 
      "var CSP_savedDDLID = " + 
       "document.getElementById('" + 
       ddl.ClientID + "').value;" + "\r\n" + 
      "function resetDDLIndex() {" + "\r\n" + 
      " document.getElementById('" + 
       ddl_Status.ClientID + "').value = CSP_savedDDLID;" + 
      "\r\n" + 
      "}" + "\r\n" + 
      "</script>"); 
    } 
    string msg = "'Do you want to change selection?';"; 
    ddl_Status.Attributes("onchange") = "if (!confirm('" & msg.Replace("'", "\'") + 
    "')) resetDDLIndex(); "; 
}