listview数据绑定的问题！
现在有一个表，它就一列，这一列用于放日期，现在存有两个日期，一个是2010.1.10，一个是2010.2.10，在初始的情况下，我为其查出这个数据，查出来的结果在页面中是以日期的升序显示的，第一条是2010.1.10，第二条是2010.2.10；此时我选择降序排序，它会重新绑定数据，通过调试发现，查出来的数据确实第一条是2010.2.10，第二是2010.1.10，但是在页面是显示的时候为什么还是和刚才一样呢？第一条显示2010.1.10，第二条显示2010.2.10。还请各位告知，谢谢！
[解决办法]
贴你的代码上来.
是否有
if(!Page.IsPostBack)
{
}
绑定方法是否调错了。
[解决办法]
页面：
<ext:ContentPanel ID="ContentPanel1" runat="server" ShowBorder="false" ShowHeader="false"
EnableBackgroundColor="true" BodyPadding="0px" CssStyle="margin-top:0px;padding-top:0px; text-align:center"
Width="900px">
<table cellpadding='0' cellspacing='0' width='850px' id="table1">
<tr id="Tr4" runat="server">
<td id="Td7adsf" runat="server">
<ext:Toolbar runat="server" ID="toolbar" Height="25px" CssStyle="margin-top:3px;">
<Items>
<ext:Button ID="btnAdd" Text="新增到款" runat="server" CssStyle="margin-right:530px;" />
<ext:ToolbarText ID="ToolbarText1" Text="排序方式：" runat="server" />
<ext:DropDownList ID="ddLSort" runat="server" Label="排序方式：" CssStyle="margin-top:5px;" OnSelectedIndexChanged="ddLSort_SelectedIndexChanged" AutoPostBack="true"></ext:DropDownList>
</Items>
</ext:Toolbar>
</td>
</tr>
</table>
<asp:ListView ID="ListView1" runat="server">
<LayoutTemplate>
<table cellpadding='0' cellspacing='0' width='850px' id="table1">
<tr runat="server">
<td style="height:3px;">
</td>
</tr>
<tr id="Tr1" runat="server">
<th id="Th1" runat="server" style="text-align:left; font-size:110%; font-weight:bold;" >客户名称</th>
<th id="Th11" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">单号</th>
<th id="Th2" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">金额(元)</th>
<th id="Th3" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">类型</th>
<th id="Th4" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">实际到款日期</th>
<th id="Th6" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">余额(元)</th>
<th id="Th7" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">核销情况</th>
<th id="Th8" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">是否冲红</th>
<th id="Th10" runat="server" style="text-align:left; font-size:110%; font-weight:bold;">操作</th>
</tr>
<tr id="Tr2" runat="server" >
<td id="Td1" colspan="9" runat="server">
<hr style=" border:1px #d9deea solid;"/>
</td>
</tr>
<tr runat="server" id="itemPlaceholder" ></tr>
<tr runat="server" >
<td colspan="9" runat="server" align="center" >
<asp:DataPager runat="server" ID="DataPager" PageSize="5">
<Fields>
<asp:nextpreviouspagerfield FirstPageText="第一页" LastPageText="最后一页"
NextPageText="下一页" PreviousPageText="上一页" />
</Fields>
</asp:DataPager>
</td>
</tr>
</table>
</LayoutTemplate>
<ItemTemplate >
<tr id="Tr3" runat="server">
<td id="Td2" runat="server" align="left" style="width:20%;">
<ext:HyperLink ID="hlkCustomer" runat="server" NavigateUrl="" Target="_blank" ShowLabel="false" Text='<%#Eval("Customer_FullName")%>' />
</td>
<td id="Td6" runat="server" align="left" style="width:12%;">
<ext:HyperLink ID="hlkPayedFundCode" runat="server" NavigateUrl="" Target="_blank" ShowLabel="false" Text='<%#Eval("PayedFund_Code")%>' />
</td>
<td id="Td3" runat="server" align="left" style="width:12%;">
<span style=" color:Red; font-weight:bold;"><%#Eval("PayedFund_AmountFormat")%></span>
</td>
<td id="Td4" runat="server" align="left" style="width:6%;">
<%#Eval("PayedFundBillType")%>
</td>
<td id="Td31" runat="server" align="left" style="width:10%;">
<%#Eval("PayedFund_PayedDateFormat")%>
</td>
<td runat="server" align="left" style="width:12%;">
<span style=" color:Red; font-weight:bold;"><%#Eval("PayedFund_LeftAmountFormat")%></span>
</td>
<td runat="server" align="left" style="width:8%;">
<%#Eval("PayedFund_VerifyCount")%>
</td> <td runat="server" align="lelt" style="width:6%;">
<%#Eval("PayedFund_IfCancel")%>
</td>
<td id="Td5" runat="server" align="left" style="width:4%;">
<asp:LinkButton ID="lbVerify" runat="server" Text="核销" CommandName="verify"/> <br />
<asp:LinkButton ID="lbCancel" runat="server" Text="冲红" />
</td>
</tr>
<tr id="Traf4" runat="server">
<td id="Td8" runat="server" colspan="9">
<hr style=" border:1px #d9deea solid;"/>
</td>
</tr>
</ItemTemplate>
<EmptyDataTemplate>
<tr runat="server">
<td colspan="9">暂无到款信息</td>
</tr>
</EmptyDataTemplate>
</asp:ListView>
</ext:ContentPanel>
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
this.BindListView(-1);
this.BindSort();
}
}
/// <summary>
/// 绑定排序选项
/// </summary>
protected void BindSort()
{
//新建下拉选项
ExtAspNet.ListItem lt = new ExtAspNet.ListItem();
lt.Text = "默认";
lt.Value = "0";
ddLSort.Items.Add(lt);
lt = new ExtAspNet.ListItem();
lt.Text = "单号";
lt.Value = "1";
ddLSort.Items.Add(lt);
lt = new ExtAspNet.ListItem();
lt.Text = "客户名称";
lt.Value = "2";
ddLSort.Items.Add(lt);
lt = new ExtAspNet.ListItem();
lt.Text = "实际到款日期";
lt.Value = "3";
ddLSort.Items.Add(lt);
lt = new ExtAspNet.ListItem();
lt.Text = "凭证到达日期";
lt.Value = "4";
ddLSort.Items.Add(lt);
//选定默认项
for (int i = 0; i < ddLSort.Items.Count; i++)
{
if (ddLSort.Items[i].Text == "默认")
{
ddLSort.Items[i].Selected = true;
}
}
}
/// <summary>
/// 绑定到款信息
/// </summary>
/// <param name="sort">排序的方式，如为-1,则为默认排序</param>
protected void BindListView(int sort)
{
//定义并获取查询语句
string swhere = getSearchSql();
//获取排序方式
swhere += GetSort(sort);
DataTable dt = tbBKPayedFund_BLLSub.GettbBKPayedFundByNoRefAllByFilte(swhere);
this.ListView1.DataSource = dt;
this.ListView1.DataBind();
｝
#region 可区域可复用方法
/// <summary>
/// 获取查询语句
/// </summary>
/// <returns></returns>
protected string getSearchSql()
{
string swhere = " 1=1 ";
//获取客户名称
if (this.tbCustomerName.Text != "")
{
swhere += " and Customer_FullName like '%" + tbCustomerName.Text + "%' ";
}
//返回查询sql语句
return swhere;
}
/// <summary>
/// 获取排序语句
/// </summary>
/// <param name="sort">排序种类</param>
/// <returns>排序语句</returns>
protected string GetSort(int sort)
{
string sortsql = "";
//判断排序的值并分配相应的排序语句
switch (sort)
{
case 0:
sortsql = " order by PayedFund_Code desc,PayedFund_CustomerID desc ";
break;
case 1:
sortsql = " order by PayedFund_Code desc";
break;
case 2:
sortsql = " order by PayedFund_CustomerID desc";
break;
case 3:
sortsql = " order by PayedFund_PayedDate desc";
break;
case 4:
sortsql = " order by PayedFund_AdvanceVoucherReachTime desc";
break;
default:
sortsql = " order by PayedFund_Code desc,PayedFund_CustomerID desc ";
break;
}
//返回
return sortsql;
}
#endregion
/// <summary>
/// 排序方式改变响应
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void ddLSort_SelectedIndexChanged(object sender, EventArgs e)
{
//将之前为listview绑定的数据清空
ListView1.DataSource = null;
ListView1.DataBind();
int sort = Convert.ToInt32(this.ddLSort.SelectedValue);
//重新绑定数据
this.BindListView(sort);
}
