DataRow drow_AllChecked_Records = dt_rptvalues.NewRow(); // create a new row
drow_AllChecked_Records["clr_plot_no"] = NewPlot; // set a value in one of its columns
foreach (DataRow ddd in dt_rptvalues.Rows)
dt_rptvalues.Rows.Remove(drow_AllChecked_Records); // try to remove it from the datatable. But it was never inserted there.
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