ASP.NET onClientClick返回false不起作用

Question

我想在按钮单击时隐藏div并在不同的按钮单击上显示它们。遗憾的是，图像按钮单击总是有回发。是什么导致了这个问题？

这是我的后端代码

protected void Page_Load(object sender, EventArgs e)
{
    for (int i = 0; i <= 10; i++)
    {
        HtmlGenericControl divTest = new HtmlGenericControl("div");
        divTest.Attributes.Add("class", "divClass");
        divTest.Attributes.Add("ID", "myDIV");
        divTest.InnerText = "Div" + i;
        form1.Controls.Add(divTest);

        ImageButton collapseButton = new ImageButton();
        collapseButton.ImageUrl = "~/images/minus.png";
        collapseButton.Attributes.Add("OnClientClick", "myHideFunction(); return false;");
        collapseButton.Height = 20;
        collapseButton.Width = 20;
        divTest.Controls.Add(collapseButton);

        ImageButton expandButton = new ImageButton();
        expandButton.ImageUrl = "~/images/plus.png";
        collapseButton.Attributes.Add("OnClientClick", "myShowFunction(); return false;");
        expandButton.Height = 20;
        expandButton.Width = 20;
        form1.Controls.Add(expandButton);
    }
}

这是我的前端代码

CSS

<style>
#myDIV {
  width: 100%;
  padding: 50px 0;
  text-align: center;
  background-color: lightblue;
  margin-top: 20px;
}
</style>

使用Javascript

<script>

function myShowFunction() {
    var x = document.getElementById("myDIV");
    x.style.display = "block";
}

function myHideFunction() {
    var x = document.getElementById("myDIV");
    x.style.display = "none";
}
</script>

Answer 1

添加onclientclick on按钮：

collapseButton.OnClientClick = "return myHideFunction();");

你需要从你的方法中返回false，如下所示：

<script>

function myShowFunction() {
    var x = document.getElementById("myDIV");
    x.style.display = "block";
    return false;
}

function myHideFunction() {
    var x = document.getElementById("myDIV");
    x.style.display = "none";
    return false;
}
</script>