我有一个ASP.net WebForms页面,屏幕顶部有很多内容。它有一个链接按钮,将回发到页面并显示页面的另一部分。当页面刷新时,我想设置焦点并向下滚动到页面的这一部分。
我试过
txtField.Focus()
在我的代码后面,它将设置焦点并尝试在那里滚动,但然后向右滚动到顶部。焦点仍然在我的文本框上,但屏幕的位置在最顶层。链接位于屏幕顶部,导致回发。我想滚动到屏幕的最底部。它会短暂地执行此操作,然后向右滚动到顶部。
我尝试过设置
Page.MaintainScrollPositionOnPostback = false;
但这似乎也没有帮助。
有什么方法可以强迫它去特定的位置吗? 当我使用按钮或链接按钮回发时,是否可以为URL添加锚标记?
答案 0 :(得分:29)
如果您有该位置的锚点,则可以使用以下代码:
Page.ClientScript.RegisterStartupScript(this.GetType(), "hash", "location.hash = '#MOVEHERE';", true);
答案 1 :(得分:28)
Page.MaintainScrollPositionOnPostBack = true;
会让你回到屏幕上的相同位置,但你可以使用AJAX,或者你可以在回发后使用SetFocus()
专注于特定的控件:
答案 2 :(得分:7)
在你的情况下,我建议你保留Page.MaintainScrollPositionOnPostBack的默认值,并使用纯javascript滚动功能
function scrollToDiv()
{
document.getElementById('yourDiv').scrollIntoView();
}
并在页面启动时调用它,稍微延迟1ms(再次使用纯javascript)
setTimeout(scrollToDiv, 1);
最后用后面的C#代码调用它,使用RegisterStartupScript(在所有页面加载后执行js):
ScriptManager.RegisterStartupScript(Page, typeof(Page), "ScrollToADiv", "setTimeout(scrollToDiv, 1);", true);
像这样,它将绕过任何asp自动滚动
答案 3 :(得分:0)
Page.MaintainScrollPositionOnPostback = true
似乎工作正常。
答案 4 :(得分:0)
我已尝试Matthieu Charbonnier answer,但除非我已添加
,否则它无法正常工作ComboBox
正如http://gnidesign.blogspot.com.au/2011/06/how-to-maintain-page-scroll-on-postback.html 中所建议的那样
我已经创建了一个帮助方法,可以在Chrome,FireFox和IE中使用
" window.scrollTo = function () { };"
使用getElementById(' {0}')。scrollIntoView比location.hash简单,因为您不需要添加额外的锚元素。
参数alignToTop非常方便指定是否要在屏幕的顶部或底部显示控件。
答案 5 :(得分:0)
我有
<asp:MultiView ID="mvAriza" runat="server">
<asp:View ID="View14" runat="server">
............ .......
</asp:View>
</asp:MultiView>
在* .aspx页面上。在按钮上的* .aspx.cs页面上单击。
Page.SetFocus(mvAriza.ClientID);
效果很好。
答案 6 :(得分:0)
这会自动滚动到asp.net Control中所需的Div 这是功能 从你想要的地方叫它 还下载Java脚本文件
OnClientClick =“return scrollGrid()”
function scrollGrid1(){ $( 'HTML,身体')。动画 ( { scrollTop:$('#Div1')。offset()。top }, '慢' ) }
答案 7 :(得分:0)
尝试
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack) {
string targetId = Page.Request.Params.Get("__EVENTTARGET");
Page.ClientScript.RegisterStartupScript(this.GetType(), "focusthis", "document.getElementById('" + targetId + "').focus()", true);
}
}
答案 8 :(得分:0)
虽然对您的情况不太满意,但也可以使用虚拟的“自定义验证器”,将要滚动的验证器设置为无效然后执行
DummyCustomValidator.SetFocusOnError = true;
就我而言,我实际上使用的是带有异步回发功能的页面验证器,以及以长垂直形式显示的多个以编程方式显示/隐藏的面板。由于仅当MyLogicalParent.Visible = true且在其他控件(例如在CheckBoxList中选择“其他”时选择了TextBox上的RequiredFieldValidator)中给出了特定答案时才需要某些字段,因此我有很多逻辑来处理页面验证。在所有正常方法中,设置滚动位置都很麻烦。
当异步回发更改页面的垂直尺寸时,我还使用RegisterStartupScript处理维护当前滚动位置。
<script type="text/javascript">
$(document).ready(function () {
var windowHeight = $(document)[0].documentElement.clientHeight; /*This is the height of the viewable browser area.*/
var scrolledPosition = $(window)[0].scrollY; /*This is the number of Pixels the Window is currently scrolled to.*/
var scroll = windowHeight + scrolledPosition; /*This should be the same as $(window).scrollTop() */
/*If the amount scrolled + the height of the window is Less than or equal to the total height of the page (past the viewable client window)*/
if ($(window).scrollTop() + getWindowSize()[1] <= getDocHeight()) {
/*Move the morescroll div to the bottom of the page... -34 is the height of the div plus a small bottom margin.*/
$("#morescroll").offset({ top: windowHeight - 34 });
}
})
/*This is the total height of the document including the area past the viewable client window.*/
function getDocHeight() {
var D = document;
/*The Largest of these six numbers is the total doc height. */
return Math.max(
D.body.scrollHeight, D.documentElement.scrollHeight,
D.body.offsetHeight, D.documentElement.offsetHeight,
D.body.clientHeight, D.documentElement.clientHeight
);
}
/*This is the width and height of the Viewable Browser area.*/
function getWindowSize() {
var myWidth = 0, myHeight = 0;
if (typeof (window.innerWidth) == 'number') {
//Non-IE
myWidth = window.innerWidth;
myHeight = window.innerHeight;
} else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
//IE 6+ in 'standards compliant mode'
myWidth = document.documentElement.clientWidth;
myHeight = document.documentElement.clientHeight;
} else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
//IE 4 compatible
myWidth = document.body.clientWidth;
myHeight = document.body.clientHeight;
}
return [myWidth, myHeight];
}
//This sets a transparent div <div id="morescroll" class="scrollMinder"> with the text "Scroll down for more." to the bottom of the viewable page.
$(window).scroll(
function () {
var windowHeight = $(document)[0].documentElement.clientHeight;
var scrolledPosition = $(window)[0].scrollY;
var scrll = windowHeight + scrolledPosition;
document.getElementById('<%= HF_LastScrolled.ClientID %>').value = scrolledPosition;
var docHeight = $(document)[0].documentElement.scrollHeight;
/*if we are scrolled to within 60 pixels from the bottom of the document, hide the indicator so it doesn't cover the footer.*/
if ($(window).scrollTop() + $(window).height() >= $(document).height() - 60) {
$("#morescroll").hide();
}
/*if we scroll back above 60 pixels from the bottom of the document, show the indicator and set the top of the div to -34 pixels.*/
else if ($(window).scrollTop() + getWindowSize()[1] <= getDocHeight()) {
$("#morescroll").show();
$("#morescroll").offset({ top: scrll - 34 });
}
});
</script>
<%-- This stores the Y scroll location.--%>
<asp:HiddenField ID="HF_LastScrolled" runat="server" />
<div id="morescroll" class="scrollMinder">
<span class="spanMinder">Scroll down for more.</span>
</div>
private string LastScrolled = "";
protected void Page_PreRender (object sender, EventArgs e)
{
if (string.IsNullOrEmpty(LastScrolled))
{
LastScrolled = "0";
}
if (string.IsNullOrEmpty(scrollPosition))
{
sb.Clear();
sb.AppendLine("Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);");
sb.AppendLine("function EndRequestHandler(sender, args) {");
sb.Append("scrollTo(0, ").Append(LastScrolled).Append(");");
sb.AppendLine("}");
sb.AppendLine("function load() {");
sb.AppendLine("Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);");
sb.AppendLine("}");
cs.RegisterStartupScript(GetType(), "ScrollToLastPosition", sb.ToString(), true);
scrollPosition = "ScrollToLastPosition";
}
if (!string.IsNullOrEmpty(scrollPosition))
{
ScriptManager.RegisterStartupScript(this, GetType(), scrollPosition, sb.ToString(), true);
}
}
protected void Page_Load (object sender, EventArgs e)
{
LastScrolled = HF_LastScrolled.Value;
Page.MaintainScrollPositionOnPostBack = false;
}
protected void SetScrollToLastPosition ()
{
sb.Clear();
sb.AppendLine("Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);");
sb.AppendLine("function EndRequestHandler(sender, args) {");
sb.Append("scrollTo(0, ").Append(LastScrolled).AppendLine(");");
sb.AppendLine("}");
sb.AppendLine("function load() {");
sb.AppendLine("Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);");
sb.AppendLine("}");
cs.RegisterStartupScript(GetType(), "ScrollToLastPosition", sb.ToString(), true);
scrollPosition = "ScrollToLastPosition";
string tempstring = sb.ToString();
ScriptManager.RegisterStartupScript(this, GetType(), scrollPosition, sb.ToString(), true);
}
protected void SetScrolltoPositionY (int y)
{
sb.Clear();
sb.AppendLine("Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);");
sb.AppendLine("function EndRequestHandler(sender, args) {");
sb.Append("scrollTo(0, ").Append(y).AppendLine(");");
sb.AppendLine("}");
sb.AppendLine("function load() {");
sb.AppendLine("Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);");
sb.AppendLine("}");
cs.RegisterStartupScript(GetType(), "ScrollTo-0-" + y.ToString(), sb.ToString(), true);
scrollPosition = "ScrollTo - 0-" + y.ToString();
string tempstring = sb.ToString();
ScriptManager.RegisterStartupScript(this, GetType(), scrollPosition, sb.ToString(), true);
}