将行从一个Datatable复制到另一个DataTable？

Question

如何将特定行从DataTable复制到c#中的另一个Datable？会有不止一行.

Answer 1

foreach (DataRow dr in dataTable1.Rows) {
    if (/* some condition */)
        dataTable2.Rows.Add(dr.ItemArray);
}

上面的示例假设dataTable1并且dataTable2具有相同的数量,类型和列顺序.

Answer 2

将指定的行从表复制到另一个

// here dttablenew is a new Table  and dttableOld is table Which having the data 

dttableNew  = dttableOld.Clone();  

foreach (DataRow drtableOld in dttableOld.Rows)
{
   if (/*put some Condition */)
   {
      dtTableNew.ImportRow(drtableOld);
   }
}

Answer 3

试试这个

    String matchString="ID0001"//assuming we have to find rows having key=ID0001
    DataTable dtTarget = new DataTable();
    dtTarget = dtSource.Clone();
    DataRow[] rowsToCopy;
    rowsToCopy = dtSource.Select("key='" + matchString + "'");
    foreach (DataRow temp in rowsToCopy)
    {
        dtTarget.ImportRow(temp);
    }

Answer 4

看看这个,你可能会喜欢它(以前请将table1克隆到table2):

table1.AsEnumerable().Take(recodCount).CopyToDataTable(table2,LoadOption.OverwriteChanges);

要么:

table1.AsEnumerable().Where ( yourcondition  ) .CopyToDataTable(table2,LoadOption.OverwriteChanges);

Answer 5

受支持:4,3.5 SP1,您现在可以只调用该对象上的方法.

DataTable dataTable2 = dataTable1.Copy()

Answer 6

我创建了一个简单的方法来解决这个问题

 DataTable newTable = oldtable.Clone();    
 for (int i = 0; i < oldtable.Rows.Count; i++)
 {
   DataRow drNew = newTable.NewRow();    
   drNew.ItemArray = oldtable.Rows[i].ItemArray;    
   newTable.Rows.Add(drNew);   
 } 

Answer 7

由于其他职位，这是我能得到的最短的时间：

DataTable destTable = sourceTable.Clone();
sourceTable.AsEnumerable().Where(row => /* condition */ ).ToList().ForEach(row => destTable.ImportRow(row));