private void Form1_Load(object sender, EventArgs e) { if (test()) { this.TestConnect_label.Text = "连接成功!"; DataTable dt = mysql_Db.Get_DataTable("SELECT * FROM 项目", "项目"); this.dataGridView1.DataSource = dt; } else { this.TestConnect_label.Text = "连接失败!"; } }
public bool HasCode(string 工令) { var table = mysql_Db.Get_DataTable("SELECT * FROM 项目 WHERE 工令='" + 工令.Trim() + "';", "项目"); if (table.Rows.Count > 0) { return(true); } return(false); }