javascript - 在服务器 Onclick 事件之后调用 Javascript 函数

Question

我有一个按钮点击事件的代码:

protected void Button1_Click(object sender, EventArgs e)
{
    string message = "";
    //Series of codes to change the message variable

    Page.ClientScript.RegisterStartupScript(GetType(), "", "ShowMessage(" + message +");", true);
    }



<script type="text/javascript">
    function ShowMessage(msg){
        alert(msg);
    }
</script>

这不会显示消息。也许我的 RegisterStartupScript 不正确？

Answer 1

尝试以下，

1. 您必须为您的脚本提供一个有效的名称。 http://msdn.microsoft.com/en-us/library/z9h4dk8y.aspx

   A startup script is uniquely identified by its key and its type. Scripts with the same key and type are considered duplicates. Only one script with a given type and key pair can be registered with the page. Attempting to register a script that is already registered does not create a duplicate of the script.

2. ShowMessage应该在页面中定义

3. 您必须将参数作为字符串传递。 ShowMessage('"+ message +"');

4. 最终代码应该是这样的

Page.ClientScript.RegisterStartupScript(GetType(), "myAlertScript", "ShowMessage('"+ message +"');", true);

更新

---

如果页面中有更新面板，请尝试使用以下代码。

ScriptManager.RegisterClientScriptBlock(this,typeof(Page),"myAlertScript","ShowMessage('" + message +"');", true);