如何禁用提交按钮？ [英] How to disable a submit button?
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问题描述
使用以下代码我无法在点击后禁用提交btn。
< head runat = server >
< title > Untitled Page < / title >
< script 类型 = text / javascript >
函数DisableButton（）{
document.getElementById（<％ = Button4.ClientID ％> ）。disabled = true;
}
window.onbeforeunload = DisableButton;
< / script >
< asp：Button ID =Button4runat =serverToolTip =Please note down 您的 成员 ID for future reference
OnClick =Button4_Click
style =z-index：1; left： 185px; top： 2840px; position： absolute; height ：30px;宽度：80px; font-size：large ForeColor =GreenText =提交/>
< script type = text / javascript language = JavaScript >
function DisableButton（）{
document.getElementById（<％ = Button4.ClientID ％> ）。disabled = true;
}
< / script >
此后添加[OnClientClick]属性来控制
< asp：Button ID =Button4runat =serverToolTip =请记下您的会员ID以备将来参考
OnClick =Button4_Click
style =z-index：1; left：185px; top：2840px; position：absolute; height：30px; width：80px; font-size：largeForeColor =Green
Text =SubmitOnClientClick =DisableButton（）;/>
假设您需要执行一次Button4_Click（）处理程序然后禁用提交按钮，尝试删除java脚本代码并尝试如下。
添加代码以在提交按钮处理程序结束时禁用;
受保护 void Button4_Click（<温泉n class =code-keyword> object sender，EventArgs e）
{
// 您提交处理程序代码
// .....
// ....
Button4.Enabled = false ; <预> // 首次执行后禁用
}
document.getElementById（'<％= this.button.ClientID％>'）。disabled = false;
Using the following codes I am unable to disable the 'Submit' btn after a click.
<head runat="server">
<title>Untitled Page</title>
<script type = "text/javascript">
function DisableButton() {
document.getElementById("<%=Button4.ClientID %>").disabled = true;
}
window.onbeforeunload = DisableButton;
</script>
<asp:Button ID="Button4" runat="server" ToolTip="Please note down your member ID for future reference"
OnClick="Button4_Click"
style="z-index: 1; left: 185px; top: 2840px; position: absolute; height:30px; width:80px; font-size:large " ForeColor="Green" Text="Submit" /> 解决方案
Use this javascript code
<script type="text/javascript" language="JavaScript"> function DisableButton() { document.getElementById("<%=Button4.ClientID %>").disabled = true; } </script>
After this Add [OnClientClick] attribute to control
<asp:Button ID="Button4" runat="server" ToolTip="Please note down your member ID for future reference" OnClick="Button4_Click" style="z-index: 1; left: 185px; top: 2840px; position: absolute; height:30px; width:80px; font-size:large " ForeColor="Green" Text="Submit" OnClientClick="DisableButton();"/>
Assuming you need Button4_Click() handler executed once and then disable the submit button,try removing the java script code and try as below .
Add code to disable at the end of submit button handler;
protected void Button4_Click(object sender, EventArgs e) { //you submit handler code //..... //.... Button4.Enabled = false; <pre> //disable after first execution }
document.getElementById('<%= this.button.ClientID %>').disabled = false;
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