由dataview生成对应的datatable的方法

/// <summary>
/// 由dataview生成对应的datatable
/// </summary>
/// <param name="obDataView"></param>
/// <returns></returns>
public static DataTable CreateTable(DataView obDataView)
{
if (null == obDataView)
{
throw new ArgumentNullException("DataView", "Invalid DataView object specified");
}
DataTable obNewDt = obDataView.Table.Clone();
int idx = 0;
string[] strColNames = new string[obNewDt.Columns.Count];
foreach (DataColumn col in obNewDt.Columns)
{
strColNames[idx++] = col.ColumnName;
}
IEnumerator viewEnumerator = obDataView.GetEnumerator();
while (viewEnumerator.MoveNext())
{
DataRowView drv = (DataRowView)viewEnumerator.Current;
DataRow dr = obNewDt.NewRow();
try
{
foreach (string strName in strColNames)
{
dr[strName] = drv[strName];
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
obNewDt.Rows.Add(dr);
}
return obNewDt;
}

DataTable dtNew = dt.Clone();
DataView dv = dt.DefaultView;
foreach (string index in lst)
{
dv.RowFilter = "id=" + index;
DataTable dataTemp = CreateTable(dv);
DataRow dr = dtNew.NewRow();
for (int i = 0; i < dataTemp.Columns.Count; i++)
{
dr[i] = dataTemp.Rows[0][i];
}

dtNew.Rows.Add(dr);
}

return dtNew;