gridview中的双向排序

本文关键字：排序 gridview | 更新日期: 2023-09-27 18:03:15

如何在GridView中实现双向排序，条件是我的GridView不绑定到SQL，而是绑定到datatable-column-row &数据集。

谢谢!

gridview中的双向排序

当你第一次绑定Datatable时，把它放在Viewstate中

gridView1.DataBind();
ViewState["dtbl"] = YourDataTable

这是代码，允许你这样做…

protected void ComponentGridView_Sorting(object sender, GridViewSortEventArgs e)
{
DataTable dataTable = ViewState["dtbl"] as DataTable;
if (dataTable != null)
{
    DataView dataView = new DataView(dataTable);
    dataView.Sort = e.SortExpression + " " + ConvertSortDirection(e.SortDirection);
    ComponentGridView.DataSource = dataView;
    ComponentGridView.DataBind();
}
}
private string ConvertSortDirection(SortDirection sortDirection)
{
string newSortDirection = String.Empty;
switch (sortDirection)
{
    case SortDirection.Ascending:
        newSortDirection = "ASC";
        break;
    case SortDirection.Descending:
        newSortDirection = "DESC";
        break;
}
return newSortDirection;
}
有关详细信息，请参阅MSDN文章GridView。排序

在您的数据绑定方法中，您将初始化viewstates，然后在排序事件中，您将执行以下操作:

void gvReport_Sorting(object sender, GridViewSortEventArgs e)
{        
    System.Data.DataTable dataTable = ViewState["dataTable"] as System.Data.DataTable;
    string sortDirection = (ViewState["sortDirection"].ToString() == "ASC" ? "DESC" : "ASC");
    ViewState["sortDirection"] = sortDirection;
    if (dataTable != null)
    {
        System.Data.DataView dataView = new System.Data.DataView(dataTable);
        dataView.Sort = String.Format("{0} {1}", e.SortExpression, sortDirection);
        gvReport.DataSource = dataView;
        gvReport.DataBind();
    }
}
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