select certain columns of a data table

First store the table in a view, then select columns from that view into a new table.

// Create a table with abitrary columns for use with the example
System.Data.DataTable table = new System.Data.DataTable();
for (int i = 1; i <= 11; i++)
    table.Columns.Add("col" + i.ToString());

// Load the table with contrived data
for (int i = 0; i < 100; i++)
{
    System.Data.DataRow row = table.NewRow();
    for (int j = 0; j < 11; j++)
        row[j] = i.ToString() + ", " + j.ToString();
    table.Rows.Add(row);
}

// Create the DataView of the DataTable
System.Data.DataView view = new System.Data.DataView(table);
// Create a new DataTable from the DataView with just the columns desired - and in the order desired
System.Data.DataTable selected = view.ToTable("Selected", false, "col1", "col2", "col6", "col7", "col3");

Used the sample data to test this method I found: Create ADO.NET DataView showing only selected Columns

Also we can try like this,

 string[] selectedColumns = new[] { "Column1","Column2"};

 DataTable dt= new DataView(fromDataTable).ToTable(false, selectedColumns);