Question

我有网格视图，我在其中添加了属性允许排序，我将网格视图中的所有字段转换为项目模板，然后出现此错误（GridView'GridView1'触发了未处理的事件排序）请有人帮帮我

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Answer 1

如果您没有将GridView绑定到SqlDataSource并且将其AllowSorting设置为true，则需要手动进行排序。您需要将排序事件分配给GridView，并编写自己的代码以实现排序。您可以参考下面的代码，并进行相应的修改。

在aspx页面上：

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" 
    onsorting="GridView1_Sorting">
</asp:GridView>

关于代码隐藏：

public partial class GridViewSort : System.Web.UI.Page
{
    private const string ASCENDING = " ASC";
    private const string DESCENDING = " DESC";

    public SortDirection GridViewSortDirection
    {
        get
        {
            if (ViewState["sortDirection"] == null)
                ViewState["sortDirection"] = SortDirection.Ascending;

            return (SortDirection)ViewState["sortDirection"];
        }
        set { ViewState["sortDirection"] = value; }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.IsPostBack)
            return;

        GridView1.DataSource = GetStaff();
        GridView1.DataBind();
    }


    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
    {

        string sortExpression = e.SortExpression;

        if (GridViewSortDirection == SortDirection.Ascending)
        {
            GridViewSortDirection = SortDirection.Descending;
            SortGridView(sortExpression, DESCENDING);
        }
        else
        {
            GridViewSortDirection = SortDirection.Ascending;
            SortGridView(sortExpression, ASCENDING);
        }   
    }

    private void SortGridView(string sortExpression, string direction)
    {
        DataTable dt = GetStaff();

        DataView dv = new DataView(dt);
        dv.Sort = sortExpression + direction;

        GridView1.DataSource = dv;
        GridView1.DataBind();
    }

    /// <summary>
    /// Dummy data
    /// </summary>
    /// <returns></returns>
    private DataTable GetStaff()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("ID", typeof(int));
        dt.Columns.Add("Name", typeof(string));
        dt.Columns.Add("Age", typeof(int));

        for (int i = 1; i <= 20; i++)
        {
            dt.Rows.Add(i, "Staff - " + i, 20 );
        }

        return dt;
    }
}

在gridview中排序字段时出错

1 个答案: