用过Gridview控件的朋友进来看看，解决马上揭帖，另给100分

比如我现在显示数据是 xml->dataset->gridview
如果我xml数据变化了我想网格背景变色,请问怎么实现？举例-
all.xml文件:
<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <Titles>
    <id>112107</id>
    <ts>0.65</ts>
    <ss>0.74</ss>
    <es>1.25</es>
  </Titles>
</NewDataSet>Dim ds As New DataSet
ds.ReadXml("D:\all.xml")
GridView1.DataSource = ds.Tables(0).DefaultView
GridView1.DataBind()显示在Gridview控件上如下:
| id   | ts | ss | es |
|112107|0.65|0.74|1.25|如果现在all.xml文件 <ts>0.65</ts> 变成了 <ts>0.75</ts>
那么Gridview中|0.65|变成|0.75|这个网格背景色就变成绿色。请问怎么实现？

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也就是说xml里面的数据是不断变化的？一旦变化了这边就变成绿色？？
Gridview这边要不断地去检测xml是否变化？？
是的，我用了atlas的timer  定时自动变化数据，现在怎样实现这个变色？
如果是这样的话，那就是在每次检测的过程中，定义一个变量，ss，比如说你的例子，检测之后将取出的数据，比如说0.74赋值给ss，下一次检测的时候，比较取出的数据是否和ss（0.74）相同，如果相同，就不变颜色，如果不同，就变色，并且将新取出的数据赋给ss
我的是这样的，请看:
Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Dim ds As New DataSet
        ds.ReadXml("D:\all.xml")
        GridView1.DataSource = ds.Tables(0).DefaultView
        GridView1.DataBind()
    End Sub<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ToXML.aspx.vb" Inherits="ToXML" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
       <asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="15000" />
        <asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
            </Triggers>
            <ContentTemplate>
                <asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None">
                    <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                    <RowStyle BackColor="#EFF3FB" />
                    <EditRowStyle BackColor="#2461BF" />
                    <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                    <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                    <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                    <AlternatingRowStyle BackColor="White" />
                </asp:GridView>
            </ContentTemplate>
        </asp:UpdatePanel>    </form>
</body>
</html>
请问应该怎么改才能实现我说的效果?谢谢！
var olddata;
         function dd(result)
         {
            if((result==null)||(result==""))
          {
            return;
          }
          else
          {
            if(result==olddata)
            {
             return;
            }
            else
            {
             alert("数据已经改变！ ")
             return;
            }

          }
         }
我的是这样的，请看:all.xml文件:
<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <Titles>
    <id>112107</id>
    <ts>0.65</ts>
    <ss>0.74</ss>
    <es>1.25</es>
  </Titles>
</NewDataSet>
Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Dim ds As New DataSet
        ds.ReadXml("D:\all.xml")
        GridView1.DataSource = ds.Tables(0).DefaultView
        GridView1.DataBind()
    End Sub<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ToXML.aspx.vb" Inherits="ToXML" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
       <asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="15000" />
        <asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
            </Triggers>
            <ContentTemplate>
                <asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None">
                    <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                    <RowStyle BackColor="#EFF3FB" />
                    <EditRowStyle BackColor="#2461BF" />
                    <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                    <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                    <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                    <AlternatingRowStyle BackColor="White" />
                </asp:GridView>
            </ContentTemplate>
        </asp:UpdatePanel>    </form>
</body>
</html>
如果现在all.xml文件 <ts>0.65</ts> 变成了 <ts>0.75</ts>
那么Gridview中|0.65|变成|0.75|这个网格背景色就变成绿色。请问怎么实现？
请问可以写在 GridView1_RowDataBound 事件里判断吗？
Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Dim ds As New DataSet
        ds.ReadXml("D:\all.xml")
        GridView1.DataSource = ds.Tables(0).DefaultView
        GridView1.DataBind()        ViewState("myDS") = ds'绑定后把旧数据存起来
    End SubProtected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound        If e.Row.RowIndex > -1 And Not ViewState("myDS") Is Nothing Then
            Dim ds As DataSet = ViewState("myDS")
            For i As Integer = 0 To e.Row.Cells.Count - 1
                If e.Row.Cells(i).Text <> ds.Tables(0).Rows(e.Row.DataItemIndex)(i).ToString() Then
                    e.Row.Cells(i).ForeColor = Drawing.Color.Red
                End If
            Next
        End If
    End Sub
上面这些简单代码能够解决行数不变的情况，如果行数是可变的，并且id是唯一标识，则需要改写RowDataBound：
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound        If e.Row.RowIndex > -1 And Not ViewState("myDS") Is Nothing Then
            Dim ds As DataSet = ViewState("myDS")
            Dim id As String = e.Row.Cells(0).Text
            Dim rows() As DataRow = ds.Tables(0).Select("[id]='" & id & "'") '尝试在旧数据集中找到当前id的行
            '如果没有找到，当前行就用不同的颜色显示
            If rows.Length = 0 Then
                e.Row.ForeColor = Drawing.Color.Red
            Else
                For i As Integer = 0 To e.Row.Cells.Count - 1
                    If e.Row.Cells(i).Text <> rows(0)(i).ToString() Then
                        e.Row.Cells(i).ForeColor = Drawing.Color.Orange
                    End If
                Next
            End If
        End If
    End Sub
to:Eddie005(♂) №.零零伍 (♂)
你的代码我运行了，数据变化后没有变色。你可以试试看
还没解决啊，那我建议你在session中或者别的地方对改变了的保留一下