private void btnLogin_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(this.txtLoginName.Text.Trim()))
{
MessageBox.Show("Please input login name.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.txtLoginName.Focus();
return;
}
if (String.IsNullOrEmpty(this.txtPassword.Text.Trim()))
{
MessageBox.Show("Please input the password.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.txtPassword.Focus();
return;
}
String passWord = RijndaelAlgorithm.Encrypt(this.txtPassword.Text.Trim());
String userName = this.txtLoginName.Text.Trim().ToLower();
DataRow[] dtUsers = userInfoList.Select("[LoginName] = '" + userName + "' And [Password] = '" + passWord + "' AND Approved = 'True'");
if (dtUsers.Length > 0)
{
var version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
DateTime buildDateTime = new DateTime(2000, 1, 1).Add(new TimeSpan(
TimeSpan.TicksPerDay * version.Build + // days since 1 January 2000
TimeSpan.TicksPerSecond * 2 * version.Revision)); /* seconds since midnight,
* (multiply by 2 to get original) */
if (buildDateTime < Convert.ToDateTime(dtUsers[0]["VersionTime"])) //Compare with allowed version build time
{
MessageBox.Show("The version of this program is out dated, please install the latest version. Application is closing......", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.Close();
}
StrPublicUserName = userName;
funcLib.releaseExclusiveControlOverDataTable();
MainForm MF = new MainForm();
MF.WindowState = FormWindowState.Maximized;
MF.Show();
this.Hide();
}
else
{
numberOfTry -= 1;
if (numberOfTry == 0)
{
MessageBox.Show("Failed 3 times. Application is closing......", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Error);
this.Close();
}
MessageBox.Show("Either Login name or password is wrong, please input again", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Error);
this.txtPassword.Focus();
}
}
