private void createdata(string sql, string servername, string database,string user, string pwd)
        {
            string connStr = string.Format("data source=" + servername + ";database="+database+";uid=" + user + ";pwd=" + pwd + "");
            SqlConnection conn = new SqlConnection(connStr);
            SqlCommand cmd = new SqlCommand(sql, conn);
            conn.Open();
            cmd.ExecuteNonQuery();
            conn.Close();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (this.textBox2.Text == "")
            {
                MessageBox.Show("请输入用户名");
                this.textBox2.Focus();
            }
            else
            {
                this.openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
                this.openFileDialog1.ShowDialog();
                if (this.openFileDialog1.FileName.ToString() == "")
                {
                    MessageBox.Show("未选择脚本文件");
                }
                else
                {
                    StringBuilder sqlblr = new StringBuilder();
                    sqlblr.Append(File.ReadAllText(this.openFileDialog1.FileName.ToString(), System.Text.Encoding.GetEncoding("GB2312")));
                }
                try
                {
                            createdata(sqlblr.ToString(), this.comboBox1.SelectedItem.ToString(), "master",this.textBox2.Text, this.textBox1.Text);
                            this.openFileDialog1.Reset();
                            MessageBox.Show("创建数据库成功");
                        }
                        catch (Exception E)
                        {
                            MessageBox.Show(E.Message);
                        }
                    }
                }
            }
        }