C# 中DataTable合并以及去除重复数据

代码如下：
合并：

/// 

/// 合并表结构相同datatable数据
/// 
public DataTable Mergedata(){
     
 DataTable data = new DataTable();
 DataTable deptdata = new DataTable(); 
 
 data=DBHelper.FillDataTable("select * from T1", null);
 deptdata=DBHelper.FillDataTable("select * from T2", null);

 data.Merge(deptdata, true); 
 return  data;
}

剔除重复数据:

	/// 

	/// 去除datatable重复数据
	/// 
	public DataTable distinctdata() 
	{
     
	 DataTable data = new DataTable();
	 DataTable distinctdata = new DataTable();

	  List<string> datarowlist = new List<string>();
      string[] datarow;
      
     foreach (DataColumn row in data.Columns) //遍历出表头
      {
     
       datarowlist.Add(row.ToString());
      }
     datarow = datarowlist.ToArray();
     
     DataView dv = new DataView(data);         
     distinctdata = dv.ToTable(true, datarow); //对表所有字段进行过滤，true表示使用distinct方法
	 return  distinctdata;
}