c# - 来自 asp.net 3.5 Code-Behind 的警报框

Question

protected void ddlLanguage_SelectedIndexChanged(object sender, EventArgs e)
{           
    if (ddlLanguage.SelectedValue=="es-ES")
    {
        Page page = HttpContext.Current.CurrentHandler as Page;

        page.ClientScript.RegisterStartupScript(typeof(Page), "Script", "<script language='javascript'>alert('All content may not be in Spanish. Do you want to continue...');</script>");            
    }
}

我想做的只是显示一个简单的警报框，但一切都是徒劳的……没有任何弹出窗口。需要一些阿育达。

Answer 1

你也可以通过这种方式实现

protected void ddlLanguage_SelectedIndexChanged(object sender, EventArgs e)
{           
  if (ddlLanguage.SelectedValue=="es-ES")
   {         
      Response.Write("<script>alert('All content may not be in Spanish. Do you want to continue...');</script>");            
   }
}

Answer 2

您需要验证启动脚本是否尚未注册。看看这篇文章。

您还可以在 ASP.NET 中构建您的自定义 MessageBox。看看这个。

Answer 3

ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "showalert","Alert Message", true);

这对我有用，没有回发试试这个