C#登陆代码_c

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private void button1_Click(object sender, EventArgs e)

{

string uname = this.textBox1.Text.ToString();

string upaword = this.textBox2.Text.ToString();

SqlConnection thisconnection = new SqlConnection(@“Server=AL;Integrated

Security=True;” + “DataBase=登陆界面”);

thisconnection.Open();

SqlCommand thiscommand = thisconnection.CreateCommand();

thiscommand.CommandText = “select uname,upaword from yh where uname='” + uname + “ '”;SqlDataReader thisreader = thiscommand.ExecuteReader();

if(thisreader.Read())

{

if(thisreader[“upaword”].ToString().Trim()== upaword)

{

MeageBox.Show(“恭喜您登陆成功！”, “登陆成功！”, MeageBoxButtons.OK, MeageBoxIcon.Information);

yhxx tt = new yhxx();

tt.Show();

}

else { MeageBox.Show(“密码错误，请重新输入！”, “错误”, MeageBoxButtons.OK, MeageBoxIcon.Information);}

}

else { MeageBox.Show(“此用户不存在，请您注册！”, “注册”, MeageBoxButtons.OK, MeageBoxIcon.Information);}

thisconnection.Close();

thisreader.Close();

}

private void button2_Click(object sender, EventArgs e)

{

zhuce = new zhuce();

.Show();

}