DataTable dt = dsCheckList.Tables[0];
dt.Columns.Add("IsChecd", typeof(string));
foreach (DataRow dr in dt .Rows)
{
dr["IsChecd"] = "1";
}
DataTable dt = dsCheckList.Tables[0];
dt.Columns.Add("IsChecd", typeof(string));
foreach (DataRow dr in dt .Rows)
{
dr["IsChecd"] = "1";
}
namespace treeview2 { public partial class Form1 : Form {