创建可以取消提交的继承按钮时出现问题 (ASP.NET)
我的 Javascript 没有错误。 Javascript 返回 false，并且提交表单。此外，当将 UseSubmitBehavior 设置为 false 时，表单仍会提交。我缺少什么来阻止表单提交？
// DerivedButton.cs
public class DerivedButton : System.Web.UI.WebControls.Button
{
public DerivedButton2()
: base()
{
this.OnClientClick = "DerivedButton_OnClick()";
//this.UseSubmitBehavior = false;
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
string resourceName = "MyControls.DerivedButton.js";
ClientScriptManager scriptManager = this.Page.ClientScript;
scriptManager.RegisterClientScriptResource(
typeof(MyControls.DerivedButton),
resourceName);
}
}
//DerivedButton.js
function DerivedButton_OnClick()
{
var answer = confirm("Are you sure?");
return answer;
}
//Output Html
<input type="submit"
name="DerivedButton1"
value="SomeButton"
onclick="DerivedButton_OnClick();
WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions
("DerivedButton1", "", false, "",
"Default2.aspx", false, false))"
id="DerivedButton1" />
There are no errors with my Javascript. The Javascript returns false, and the form is submitted. Additionally when setting UseSubmitBehavior to false the form still submits. What am I missing to prevent the form from being submitted?
// DerivedButton.cs
public class DerivedButton : System.Web.UI.WebControls.Button
{
public DerivedButton2()
: base()
{
this.OnClientClick = "DerivedButton_OnClick()";
//this.UseSubmitBehavior = false;
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
string resourceName = "MyControls.DerivedButton.js";
ClientScriptManager scriptManager = this.Page.ClientScript;
scriptManager.RegisterClientScriptResource(
typeof(MyControls.DerivedButton),
resourceName);
}
}
//DerivedButton.js
function DerivedButton_OnClick()
{
var answer = confirm("Are you sure?");
return answer;
}
//Output Html
<input type="submit"
name="DerivedButton1"
value="SomeButton"
onclick="DerivedButton_OnClick();
WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions
("DerivedButton1", "", false, "",
"Default2.aspx", false, false))"
id="DerivedButton1" />
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尝试将您的
OnClientClick更改为如下所示：这应该可行，尽管我怀疑可能有一种更优雅的方式来完成您想要的操作。
Try changing your
OnClientClickto something like this:This should work, although I suspect there's probably a more elegant way to do what you want.