我正在制作一个包含登录页面的程序,编码时出现此错误:运算符==
无法应用于byte[]
和string
类型的操作数
我不知道该去哪里或如何处理它。这是我的错误部分:
private void button1_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Please Enter your username.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Warning);
textBox1.Focus();
return;
}
try
{
using (DataEntities test = new DataEntities())
{
var query = from o in test.Users
where o.Username == textBox1.Text && o.Password == textBox2.Text
select o;
if(query.SingleOrDefault() != null)
{
MessageBox.Show("You have been successfully logged in.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
//Add your code process login here
}
else
{
MessageBox.Show("Your username or password is incorrect.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
提前致谢!
答案 0 :(得分:1)
如果您的用户名和密码字段是字节数组,则可以在进行比较之前将它们转换为字符串:
Encoding.ASCII.GetString(o.Username)== textBox1.Text