ASP.NET GridView排序实现和事件处理

Question

有人可以分享如何实际实现gridview排序并处理该事件,如果:

1. 数据手动绑定
2. Gridview是使用模板字段构建的,模板字段仅从代码后面(不是来自标记)

我仅从代码隐藏构建我的gridview,因此我不能使用默认方法或解决方案.

谢谢

Answer 1

这可能是您正在寻找的:

protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
    listBindByName(); //this would be your procedure to look for the data you want
    DataSet dsSortTable = GridView1.DataSource as DataSet;
    DataTable dtSortTable = dsSortTable.Tables[0];
    if (dtSortTable != null)
    {
        DataView dvSortedView = new DataView(dtSortTable);
        dvSortedView.Sort = e.SortExpression + " " + getSortDirectionString();
        ViewState["sortExpression"] = e.SortExpression;
        GridView1.DataSource = dvSortedView;
        GridView1.DataBind();
    }
    UpdatePanel1.Update();
}

private string getSortDirectionString()
{
    if (ViewState["sortDirection"] == null)
    {
        ViewState["sortDirection"] = "ASC";
    }
    else
    {
        if (ViewState["sortDirection"].ToString() == "ASC")
        {
            ViewState["sortDirection"] = "DESC";
            return ViewState["sortDirection"].ToString();
        }
        if (ViewState["sortDirection"].ToString() == "DESC")
        {
            ViewState["sortDirection"] = "ASC";
            return ViewState["sortDirection"].ToString();
        }
    }
    return ViewState["sortDirection"].ToString();
}

这是TemplateField的一个示例:

<asp:TemplateField HeaderText="Description" SortExpression="description">
    <ItemTemplate>
        <asp:Label Visible="true" runat="server" ID="descriptionLabel" Text='<%# bind("description")  %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="txtEditDescription" Width="100px" runat="server" Text='<%#Bind("description") %>' />
    </EditItemTemplate>
</asp:TemplateField>

通过添加SortExpression属性,GridView标头将变为可单击.确保sort表达式属性是您通过sql查询绑定的字段的名称.

希望这可以帮助.