Add, Delete, Modify and Filter columns in a DataTable
Some times we need to filter some columns when we have a dataTable with much more unused Data Columns then we think that How to filter only required columns after removal of useless columns. Here I am giving you a solution this might be useful for you.
string unUsedColumnNames = "col1,col2,col3";
DataTable dt1 = (DataTable)Session["data"]; // I have a DataTable stored in session
DataTable dt2 = new DataTable();
dt2 = dt1.Copy();
foreach (DataColumn column in dt1.Columns)
Now we get dt2 as filtered DataTable from original DataTable dt1.