绑定数组对象DataTable.Select返回值DataRow[]

方法一：

DataTable dt = (DataTable)gvDraftList.DataSource;
DataSet ds=new DataSet();
ds.Merge(dt.Select(where));
gvDraftList.DataSource = ds.Tables[0];

方法二：

DataTable dt = (DataTable)gvDraftList.DataSource;
gvDraftList.DataSource = new DataView(dt, where, "", DataViewRowState.CurrentRows).ToTable();

方法三：

DataTable dt = (DataTable)gvDraftList.DataSource;

DataTable temp=dt.Clone();
foreach (DataRow dr in dt.Select(where))
{
      //temp.Rows.Add(dr); //出错提示为:该行已经属于另一个表
      temp.Rows.Add(dr.ItemArray);
}
gvDraftList.DataSource = temp;

使用扩展方法：

using System.Data;

namespace Bll.Ext.Object
{
    public static class ObjExt
    {
        public static DataTable Select(this object o, string where)
        {
            DataTable dt=o as DataTable;
            if (dt !=null)
            {
                return new DataView(dt, where, "", DataViewRowState.CurrentRows).ToTable();
            }
            else
            {
                return null;
            }
        }
    }
}

调用：

using Bll.Ext.Object;

namespace ...
{
        public partial class ...
         {
              private void BindData(string where)
              {
                         gv.DataSource = Bll.MyData.GetDataTable();
                         gv.DataSource = gv.DataSource.Select(where);
                         gv.DataBind();
              }
         }
}