Find DataTable by DataTable.Id HELP！

Question

必须有一个简单的答案:我想循环遍历多个数据表...示例：

for (int i = 1 ; i < 7 ; i ++ )
{
    DataTable dt = (DataTable) "dt" + i.toString();

    // do something with DataTable dt1 as DataTable
    //  ie...

    int x = dt.Rows.Count
}

上面的代码显然不起作用。但是，如何找到像使用WebControls处理FindControl那样的DataTable呢？我想不出来。

Answer 1

嗯，你有没有

DataTable dt1 = new DataTable();
DataTable dt2 = new DataTable();
DataTable dt3 = new DataTable();
DataTable dt4 = new DataTable();
DataTable dt5 = new DataTable();
DataTable dt6 = new DataTable();
DataTable dt7 = new DataTable();

在你的项目中？

然后，您应该创建一个DataTables列表：

List<DataTable> datatables = new List<DataTable>();

datatables.Add(new DataTable());  // dt1 (now datatables[0])
datatables.Add(new DataTable());  // dt2 (now datatables[1])
datatables.Add(new DataTable());  // dt3 (now datatables[2])
datatables.Add(new DataTable());  // dt4 (now datatables[3])
datatables.Add(new DataTable());  // dt5 (now datatables[4])
datatables.Add(new DataTable());  // dt6 (now datatables[5])
datatables.Add(new DataTable());  // dt7 (now datatables[6])

然后你可以像这样循环：

foreach (DataTable dt in datatables)
{
    // do something with DataTable dt as DataTable
    //  ie...

    int x = dt.Rows.Count    
}