RegisterStartupScript不适用于ScriptManager，Updatepanel.这是为什么? [英] RegisterStartupScript doesn't work with ScriptManager,Updatepanel. Why is that?

问题描述

protected void timer1_Tick(object sender, EventArgs e)
    {
        foreach (RepeaterItem item in rpChat.Items)
        {
            TextBox txt = item.FindControl("txtChatMessage") as TextBox;
            if (txt != null)
            {
                message[i] = txt.Text;
                i--;
            }
        }
        lblStatusChat.Text = "";
        RepeaterBind();
        string javaScript = "<script language=JavaScript>\n" + "alert('Button1_Click client-side');\n" + "</script>";

        Page.ClientScript.RegisterStartupScript(this.GetType(), "myKey", javaScript);
    }

timer_click触发和更新面板.而且警报消息不会在timer_tick事件中显示

timer_click trigggers and update panel. And the alert message doesnt show up on timer_tick event

推荐答案

使用UpdatePanel时，将无法像尝试使用ClientScript那样调用JavaScript.您必须改为使用ScriptManager.RegisterStartupScript.

When you use an UpdatePanel, then you can not call JavaScript using ClientScript as you have tried to. You have to use ScriptManager.RegisterStartupScript instead.

因此更改您的

Page.ClientScript.RegisterStartupScript(this.GetType(), "myKey", javaScript);

到

ScriptManager.RegisterStartupScript(updatePanelId,updatePanelId.GetType(), "alert", javaScript, true);

这篇关于RegisterStartupScript不适用于ScriptManager，Updatepanel.这是为什么?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！