异常详细信息: System.ArgumentException: 该行已经属于此表。

 DataTable dt = new DataTable();
 DataRow dr = dt.NewRow();      
        int i;
        dt.Columns.Add(new DataColumn("int", typeof(System.Int32)));
        dt.Columns.Add(new DataColumn("string", typeof(System.String)));
        dt.Columns.Add(new DataColumn("datatime", typeof(System.DateTime)));
        dt.Columns.Add(new DataColumn("boolean", typeof(System.Boolean)));

        for (i = 0; i < 9; i++)
        {
            
            dr[0] = i;
            dr[1] = "item" + i.ToString();
            dr[2] = System.DateTime.Now.ToShortDateString();
            if (i / 2 == 0)
            {
                dr[3] = true;
            }
            else
            {
                dr[3] = false;
            }

            dt.Rows.Add(dr);

        }
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }

修改后：

 DataTable dt = new DataTable();
       
        int i;
        dt.Columns.Add(new DataColumn("int", typeof(System.Int32)));
        dt.Columns.Add(new DataColumn("string", typeof(System.String)));
        dt.Columns.Add(new DataColumn("datatime", typeof(System.DateTime)));
        dt.Columns.Add(new DataColumn("boolean", typeof(System.Boolean)));

        for (i = 0; i < 9; i++)
        {
            DataRow dr = dt.NewRow();
            dr[0] = i;
            dr[1] = "item" + i.ToString();
            dr[2] = System.DateTime.Now.ToShortDateString();
            if (i / 2 == 0)
            {
                dr[3] = true;
            }
            else
            {
                dr[3] = false;
            }

            dt.Rows.Add(dr);

        }
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }

实例化行应该放在循环当中。另外，在实例化一个行时候不能用new DataRow();而用dt.NewRow();