DataGridView dgv = new DataGridView();
DataTable dt = new DataTable();//DataGridView未設置列名信息的時候可以直接指定DataSource
dt.Columns.Add("姓名", Type.GetType("System.String"));
dt.Columns.Add("性別", Type.GetType("System.String"));
dt.Columns.Add("年齡", Type.GetType("System.Int16"));
//====================添加行數據方法1============================
//dt.Rows.Add(new object[]{"張三","男",22});
//dt.Rows.Add(new object[]{"李四","女",20});
//====================添加行數據方法1============================
//====================添加行數據方法2============================
DataRow dr = dt.NewRow();
dr[0] = "張三";
dr[1] = "男";
dr[2] = 22;
dt.Rows.Add(dr); 
DataRow dr2 = dt.NewRow();
dr2[0] = "李四";
dr2[1] = "女";
dr2[2] = 20;
dt.Rows.Add(dr2);                                      
//====================添加行數據方法2============================ 
                 
dgv.DataSource = dt;

//DataGridView已經在可視化界面設置好列名后不能再指定DataSource(指定了顯示會走樣)
string[] names = { "張三", "李四" };
string[] sexs = { "男", "女" };
int[] ages = { 22, 20 };
for (int i = 0; i < names.Length; i++)
{
    dgv.Rows.Add();
    dgv.Rows[i].Cells[0].Value = names[i];
    dgv.Rows[i].Cells[1].Value = sexs[i];
    dgv.Rows[i].Cells[2].Value = ages[i];
}  
//====================添加單行可使用============================ 
 //DataGridViewRow dgr = new DataGridViewRow();
//int index = dgv.Rows.Add(dgr);
 //dgv.Rows.Add();
//dgv.Rows[index].Cells[0].Value = names[0];
 //dgv.Rows[index].Cells[1].Value = sexs[0];
//dgv.Rows[index].Cells[2].Value = ages[0];
//====================添加單行可使用============================ 

private void button1_Click(object sender, EventArgs e)
        {
            DataSet ds = new DataSet();
            DataTable dt = new DataTable();
            ds.Tables.Add(dt);
            dt.Columns.Add("name");             //添加類標題
            dt.Columns.Add("sex");
            dt.Columns.Add("address");
 
            DataRow dr = dt.NewRow();
            dr["name"] = "dsads";
            dr["sex"] = "12312";
            dr["address"] = "32132";
            dt.Rows.Add(dr);                //添加行信息
            dt.Rows.Add(dr[0]);
            dt.Rows.Add(dr[0]);
            dt.Rows.Add(dr[0]);
 
            dataGridView1.DataSource = ds.Tables[0];
        }

            string r = bytesLoaded;
            var person = JObject.Parse(r);
            var columns = JArray.FromObject(person["columns"]);
            var rows = JArray.FromObject(person["rows"]);
 
            DataSet ds = new DataSet();
            DataTable dt = new DataTable();
            ds.Tables.Add(dt);
            foreach (var item in columns)
            {
                dt.Columns.Add(item["name"].ToString());
            }
 
            foreach (var item in rows)
            {
                DataRow dr = dt.NewRow();
 
                for (int i = 0; i < columns.Count; i++)
                {
                    dr[columns[i]["name"].ToString()] = item[i].ToString();
                }
                dt.Rows.Add(dr);                //添加行信息
            }
            dataGridView1.DataSource = ds.Tables[0];