asp.net - 如何将列数据绑定到数据源？

Question

我有 1 行和 3 列（日期、时间、内容）的表，我想要数据源中的 3 列中的 2 列（时间、内容）我该怎么做？

var table = (from r in socialEvents.AsEnumerable()
                         where r.Field<DateTime>("Date") >= Calendar1.SelectedDate.Date &&
                               r.Field<DateTime>("Date") <= Calendar1.SelectedDate.AddDays(1)
                         select r).CopyToDataTable();    

    if (table.Rows.Count > 0)
                {
                    DataGrid1.Visible = true;
                    DataGrid1.DataSource = table;
                    DataGrid1.DataBind();
                }

Answer 1

我假设datagrid是一个GridView？那么你应该做这样的事情

<asp:GridView runat="server" AutoGenerateColumns="false"  >
<Columns>
    <asp:BoundField DataField="what" HeaderText="what" />
    <asp:BoundField DataField="time" HeaderText="time"  />        
</Columns>

</asp:GridView>

Answer 2

您可以在选择中指定列

var table = (from r in socialEvents.AsEnumerable()
                         where r.Field<DateTime>("Date") >= Calendar1.SelectedDate.Date &&
                               r.Field<DateTime>("Date") <= Calendar1.SelectedDate.AddDays(1)
                         select new {time = r.Field<DateTime>("Date"), what = r.Field<data_type>("what") });