在C＃按钮中调用JavaScript方法使用ClientScript单击“事件”

问题描述

任何人都可以给我一个详细的解释或资源，说明在asp.net按钮点击事件中使用Client-Script调用

java脚本函数时会发生什么。我的问题是如果我从第一行调用java脚本函数，事件将不会停止并填充java脚本函数。相反，它将遍历整个C＃代码，然后填充java脚本函数。



Ex：

Can anyone give me a detailed explanation or resource regarding what happens when calling a
java-script function using Client-Script, inside an asp.net button click event. And my problem is if I call a java-script function from the 1st line, event won't stop and populate the java-script function. Instead it'll go through the whole C# code and then populate the java-script function.

Ex:

<script type="text/javascript">
        function ShowPopUp() {
            var result = confirm("Do you want to proceed? ");
            alert(result);
        }
    </script>

protected void btnClick_Click(object sender, EventArgs e)
{
   ClientScript.RegisterStartupScript(this.GetType(), "Popup", "ShowPopUp();", true);
   for (int i = 0; i < 10; i++)
   {

   }
}

<asp:button ID="btnClick" runat="server" text="Click here" OnClick="btnClick_Click" />

推荐答案

<asp:Button ID="btnClick" runat="server" Text="Click here" OnClick="btnClick_Click" OnClientClick="return ShowPopUp();" />

并将JavaScript函数更新为...

And update the JavaScript function as...

<script type="text/javascript">
    function ShowPopUp() {
        return confirm("Do you want to proceed? ");
        //alert(result);
    }
</script>

因此，当用户在确认框中点击确定时，它会返回 true ，因此它将触发按钮单击服务器端事件。否则，它将返回 false 并保持原样。

So, when user would click Ok in confirm box, it would return you true, hence it will then fire the Button Click Server Side Event. Otherwise, it would return false and stay as it is.

<input type="button" id="btn" />
<script>

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