d button1_Click(object sender, EventArgs e)函数中添加
如下代码： string thisConnectin = "server=XIAOLI-PC\\XIAOLI;Integrated Security=true;database=map";SqlConnection con;con = new SqlConnection(thisConnectin);if (this.CheckInfo()){string cmd = "INSERT INTO tb_user VALUES('" + textBox1.Text + "','" + textBox2.Text + "')";SqlCommand com = new SqlCommand(cmd, con);con.Open();//关?闭?//com.ExecuteNonQuery();if (com.ExecuteNonQuery() != 0)//com.ExecuteNonQuery()执′行D语?句?，?并￠返う?回?受酣?影?响ì行D数簓MessageBox.Show("注痢?册á成é功|！?");elseMessageBox.Show("注痢?册á不?成é功|！?");con.Close();//关?闭?Form3 frm2 = new Form3();frm2.Show();}

 

按钮函数中调用了两个自写的函数Alert（）和checkInfo（）函数这两个函数的作用是为了确认编辑框中是否为空，以及密码和确认密码的值是否一致。void Alert(string message){MessageBox.Show(null, message, "信?息￠提?示?",MessageBoxButtons.OK, MessageBoxIcon.Information);}bool CheckInfo(){if ( this.textBox1.Text.Trim()== ""){Alert("用?户§名?不?完?整?");return false;}if (this.textBox2.Text.Trim() == ""){Alert("密ü码?不?完?整?");return false;}if (this.textBox3.Text.Trim() == ""){Alert("确ā?认?密ü码?不?完?整?");return false;}if (this.textBox2.Text.Trim ()!= this.textBox3.Text.Trim()){Alert("密ü码?和í确ā?认?密ü码?不?一?致?");return false;}return true;