过滤DataTable中的重复数据根据列名来过滤

// 过滤datatable中重复的信息
public DataTable GetDisTable(DataTable oldTable)
{
if (oldTable != null || oldTable.Rows.Count>0)
{
DataView view = new DataView(oldTable);
string []discolom = new string[]{"Content"};
//  如果过滤每个字段的话就下面
//string[] discolom = new string[ oldTable.Columns.Count];
//foreach (DataColumn dc in oldTable.Columns) {
//    discolom[dc.Ordinal] = dc.ColumnName;
//}
DataTable nTable = new DataTable();
nTable = view.ToTable(true, discolom);
nTable.Columns.Add("FSelected", typeof(bool));
foreach (DataRow dr in nTable.Rows)
{
dr["FSelected"] = false;
}
return nTable;
}
return null;
}