有哪位知道这篇文档里采用的编程语言是啥吗？（下面是效果图）

Question

private void button1_Click(object sender, EventArgs e)
        {
            if (this.userb.Text == null || this.userb.Text == "" || this.pwdb.Text == null || this.pwdb.Text == "")
            {
                MessageBox.Show("请把用户名、密码信息框填完整");
            }
            else
            {
                string husers, hupws;
                husers = this.userb.Text.Trim();
                hupws = this.pwdb.Text.Trim();
                string sql = "select count(*) from 登录账户 where Userid='" + husers + "' and Pwd='" + hupws + "'";
                if (GetCount(sql) > 0)
                {
                    Form2 j = new Form2();
                    j.Show();
                    this.Hide();
                }
                else
                {
                    MessageBox.Show("用户名密码错误 请重新输入！！！");
                }
            }
        }

        public int GetCount(string sql)
        {
            SqlConnection cons = dss.Create();
            SqlCommand cmd = new SqlCommand(sql, cons);
            cons.Open();
            int count = (int)cmd.ExecuteScalar();
            cons.Close();
            return count;
        }

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/63880910252610.958426057129756.png)

Answer 1

C# WinForm的代码，有帮助能点个采纳吗 ，谢谢~