ユーザーが GridView をその列のいずれかで並べ替えられるようにしようとしています。
<asp:GridView ID="gvShows" runat="server" DataKeyNames="dataSource,title" Caption="Show List" AutoGenerateColumns="False" AllowSorting="True" AllowPaging="True" CaptionAlign="Left" OnSorting="gvShows_Sorting" >
<RowStyle BorderColor="Black" />
<Columns>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="cbSelect" runat="server" AutoPostBack="false"/>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="Data Source" DataField="dataSource" />
<asp:BoundField HeaderText="Show ID" DataField="ShowId" />
<asp:BoundField HeaderText="Show Title" DataField="title" />
<asp:BoundField HeaderText="Episode Id" DataField="EpisodeID" />
<asp:BoundField HeaderText="Episode Title" DataField="EpisodeTitle" />
<asp:BoundField HeaderText="Genre" DataField="Genre" />
<asp:BoundField HeaderText="Show Type Description" DataField="ShowTypeDescription" />
<asp:BoundField HeaderText="Director Name" DataField="DirectorName" />
<asp:BoundField HeaderText="Release Year" DataField="ReleaseYear" />
<asp:BoundField HeaderText="Season Episode" DataField="SeasonEpisode" />
</Columns>
</asp:GridView>
protected void gvShows_Sorting(object sender, GridViewSortEventArgs e)
{
var dataTable = Session["shows"] as DataTable;
if (dataTable != null)
{
var dataView = new DataView(dataTable)
{
Sort = e.SortExpression + " " + ConvertSortDirection(e.SortDirection)
};
gvShows.DataSource = dataView;
gvShows.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;
}
GridView にデータが表示されている場合、データを並べ替えるためにヘッダー テキストをクリックすることはできません。