对datatable里面的表进行排序

一、重生法

dstaset.Tables.Add(dt)
dataset.Tables(0).DefaultView.Sort = "id desc"

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二、直接法

dv = New DataView(dt)
dv.Sort = "id desc"

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三、间接法

dv = New DataView(ds.Tables[0])dv.Sort = "id desc"DataRow[] rows = dataTable1.Select("", "ord asc");DataTable t = DataTable1.Clone();t.Clear();foreach (DataRow row in rows)    t.ImportRow(row);DataTable1 = t;
--VS2005中这种方法最简单： 
DataView dv = dt.DefaultView; dv.Sort = "c1 Asc"; DataTable dt2 = dv.ToTable();

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//拿到数据源 

DataView dv = this.dtDataSource.Copy().DefaultView; 

//排序 
dv.Sort = "Columns1 asc,Columns2 asc,Columns3 asc"; 
//过滤重复数据 
//DataTable dt = dv.ToTable(true, "Columns1", "Columns2", "Columns3"); 
//不过滤重复数据 
DataTable dt = dv.Table.Copy();