[英]sorting with gridview inside a update panel in asp.net
我有一个网格表,我在页面加载时进行数据绑定
if (!IsPostBack)
{
BindGridViewUsers(msgID);
}
网格视图位于更新面板内部,我每3秒更新一次面板
<asp:UpdatePanel ID="holder" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
计时器滴答每3秒执行一次数据绑定
protected void Timer_Tick(object sender, EventArgs args)
{
String MsgID = HttpContext.Current.Request.QueryString["MsgID"];
int msgID = Convert.ToInt32(MsgID);
BindGridViewUsers(msgID);
}
并且我还启用了表中的排序功能,但是排序仅保留3秒钟,然后完成了数据绑定并还原了原始表。即使更新到表后,如何保留排序功能。
<asp:BoundField DataField="TimeRead" ItemStyle-Width="25%" HeaderText="TimeRead"
SortExpression="TimeRead" />
<asp:BoundField DataField="Name" ItemStyle-Width="45%" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="Email" ItemStyle-Width="45%" HeaderText="Email" SortExpression="Email">
排序:
private void SortGridView(string sortExpression, string direction)
{
String MsgID = HttpContext.Current.Request.QueryString["MsgID"];
DataTable dataTable = BindGridViewUsers(Convert.ToInt32(MsgID)).Tables[0];
if (dataTable != null)
{
DataView dataView = new DataView(dataTable);
dataView.Sort = sortExpression + direction;
Grid_UserTable.DataSource = dataView;
Grid_UserTable.DataBind();
}
}
当您调用SortGridView()方法时,我们传递了两个参数sortExpression和direction
只需在页面级别上声明静态变量并为其指定方向即可更改方法中的方向
if (direction.Equals("ASC"))
direction = "DESC";
else
direction = "ASC";
并排序Dataview。
希望这有效!
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