private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection conn = new SqlConnection("server=a;user=a;pwd=a;database=a");
            conn.Open();
            string str_alter = "alter table dbo.contact add '" + textBox1.Text + "' varchar(100)";
            SqlCommand comm = new SqlCommand(str_alter, conn);
            这里的代码该怎样写？
            MessageBox.Show("添加成功");
        }

[ 本帖最后由 寒水1015 于 2009-11-6 21:56 编辑 ]

DataGridViewColumn Column1 = new DataGridViewColumn();
this.dataGridView1.Columns.Add(this.Column1);

我时要把这个列增加到数据库的表中，并不是dataGridView控件中