手动绘制DataTable

 1 //声明一张空表    
 2 DataTable dt_rate = new DataTable();
 3 //声明空列                
 4 DataColumn dc = null;
 5 //可以通过循环新建列
 6 dc = new DataColumn();
 7 dc.ColumnName = "Columns1";
 8 dc.DefaultValue = "0";
 9 dt_rate.Columns.Add(dc);
10 //声明一空行
11 DataRow new_row = dt_rate.NewRow();
12 //为空行赋值即可。
13   for (int i = 0; i < dt_rate.Columns.Count; i++)
14  {
15    new_row[i]="赋值";
16    dt_rate.Rows.Add(new_row);
17    new_row = dt_rate.NewRow();
18  }