滚动到 UserControl 中的特定 DataList 项

发布于 2024-11-19 16:30:09 字数 1020 浏览 2 评论 0原文

我正在开发一个 ASP.NET 应用程序，其中在 aspx 页面中嵌入了 3 个用户控件，该页面又使用母版页。

3 个用户控件中的 2 个具有 DataList。我想滚动到用户控件中的特定/选定的 DataListItem。

另外，我查看了这个线程（http://forums.asp.net/t/1596201.aspx）。但我认为这对我的情况不起作用。我在aspx页面中有MaintainScrollPositionOnPostback =“true” - 仍然没有运气。

如果有人能帮我找出一种方法来做到这一点，那将非常有帮助

标记看起来像这样

     <asp:DataList ID="dl" runat="server"
            SkinID="DataList" onitemcommand="dl_ItemCommand" 
            >
            <ItemTemplate>
                <asp:Label ID="lblIDTitle" runat="server" Text="ID: " />
                <asp:Label ID="dlLabel" runat="server" Text='<%# Eval("Id") %>'  />
                <asp:LinkButton ID="btnSelect" runat="server" CommandName="Select">Select</asp:LinkButton>
                <br />
                <asp:Label ID="NameLabel" runat="server" Text='<%# Eval("DisplayName") %>' />
                <br />
            </ItemTemplate>
        </asp:DataList>

原文

I am working on an ASP.NET application where I have 3 user controls embedded in an aspx page which in turn uses a master page.

2 Usercontrols out of the 3 have a DataList. I would like to scroll to a specific / selected DataListItem in the usercontrol.

Also, I looked at this thread (http://forums.asp.net/t/1596201.aspx). But I don't think it will work in my case. And I have MaintainScrollPositionOnPostback="true" in the aspx page - No luck still.

It would be really helpful, if someone could help me figure out a way to do this

The markup looks something like this

     <asp:DataList ID="dl" runat="server"
            SkinID="DataList" onitemcommand="dl_ItemCommand" 
            >
            <ItemTemplate>
                <asp:Label ID="lblIDTitle" runat="server" Text="ID: " />
                <asp:Label ID="dlLabel" runat="server" Text='<%# Eval("Id") %>'  />
                <asp:LinkButton ID="btnSelect" runat="server" CommandName="Select">Select</asp:LinkButton>
                <br />
                <asp:Label ID="NameLabel" runat="server" Text='<%# Eval("DisplayName") %>' />
                <br />
            </ItemTemplate>
        </asp:DataList>

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白云悠悠 2024-11-26 16:30:10

看起来好像很简单。步骤如下：

在包含数据列表的用户控件中，添加此方法..

 public void FocusControlOnPageLoad(string ClientID, System.Web.UI.Page 页面)
 {
     ClientScriptManager clientScript = this.Page.ClientScript;
     clientScript.RegisterClientScriptBlock(this.GetType(),"CtrlFocus",

                    @"<脚本> 

          函数ScrollView()

          {
             var el = document.getElementById('" + ClientID + @"')
             if (el!= null)
             {        
                el.scrollIntoView();
                el.focus();
             }
          }

          window.onload = ScrollView;

          ");

}

正如您从标记中看到的那样，我有一个链接按钮。因此，使用 OnItemCommand，每当单击链接按钮时我都会调用此函数。像这样的东西；

protected void dlCommitment_ItemCommand（对象源，DataListCommandEventArgs e）
{            
    if (e.CommandName == "选择")
    {  
        LinkButton 链接 = LinkButton)dlCommitment.Items[e.Item.ItemIndex].FindControl("btnSelectCMTMT");
         FocusControlOnPageLoad(link.ClientID, this.Page);
    }
}

它就像一个魅力。感谢一篇讨论 ScrollIntoView 的帖子和一篇关于我上面发布的方法的代码项目文章。由于我比较着急，所以无法附上链接。感谢最初发布此信息的人。

Looks like it is pretty simple. Here are the steps:

In the user control containing the datalist, added this method..

 public void FocusControlOnPageLoad(string ClientID, System.Web.UI.Page page)
 {
     ClientScriptManager clientScript = this.Page.ClientScript;
     clientScript.RegisterClientScriptBlock(this.GetType(),"CtrlFocus",

                    @"<script> 

          function ScrollView()

          {
             var el = document.getElementById('" + ClientID + @"')
             if (el != null)
             {        
                el.scrollIntoView();
                el.focus();
             }
          }

          window.onload = ScrollView;

          </script>");

}

As you can see from the mark-up I had a linkbutton. So with the OnItemCommand, I called this function whenever the link button was clicked. Something like this;

protected void dlCommitment_ItemCommand(object source, DataListCommandEventArgs e)
{            
    if (e.CommandName == "Select")
    {  
        LinkButton link = LinkButton)dlCommitment.Items[e.Item.ItemIndex].FindControl("btnSelectCMTMT");
         FocusControlOnPageLoad(link.ClientID, this.Page);
    }
}

And it worked like a charm. Thanks to a post that discussed about ScrollIntoView and a code project article about the method I have posted above. Since I'm on a rush, I'm not able to attach the links. Thanks to the ones who posted this information originially.

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