public override License GetLicense(LicenseContext context, Type type, object instance, bool allowExceptions)
{
FileLicense license = null;
StringBuilder listMsg = new StringBuilder();
if (context != null)
{
if (context.UsageMode == LicenseUsageMode.Designtime)
{
license = new FileLicense(this, "");
}
if (license != null)
{
return(license);
}
//licenses
string licenseFile = GetlicFilePath();
if (!string.IsNullOrWhiteSpace(licenseFile) && File.Exists(licenseFile))
{
try
{
StreamReader sr = new StreamReader(licenseFile, Encoding.Default);
String xmlStr = DESEncrypt.Decrypt(sr.ReadToEnd());
var entity = XmlFormatterSerializer.DeserializeFromXml <LicenseEntity>(xmlStr, typeof(LicenseEntity));
if (entity != null)
{
var pastDate = DateTime.Parse(entity.PastDate);
if (DateTime.Now > pastDate)
{
listMsg.AppendLine(" 许可证已过期");
}
}
if (listMsg.Length > 5)
{
listMsg.Insert(0, " 许可证编号:" + entity.ID);
listMsg.Insert(1, " 许可证名称:" + entity.Name);
listMsg.Insert(2, " 程序集版本号:" + entity.AssemblyName);
license = new FileLicense(this, listMsg.ToString());
}
else
{
license = new FileLicense(this, "");
}
}
catch (IOException e)
{
license = new FileLicense(this, "检查许可证失败" + e.Message);
}
}
else
{
license = new FileLicense(this, "lic文件不存在,请联系供应商");
}
}
return(license);
}
private void but_Save_Click(object sender, EventArgs e)
{
if (txt_Name.Text.Length == 0)
{
MessageBox.Show("许可证名称不能为空!");
return;
}
if (txt_AssemblyName.Text.Length == 0)
{
MessageBox.Show("程序集名称不能为空!");
return;
}
but_Save.Enabled = false;
LicenseEntity license = new LicenseEntity();
license.ID = Guid.NewGuid();
license.Name = txt_Name.Text;
license.AssemblyName = txt_AssemblyName.Text;
license.PastDate = txt_PastDate.Value.ToString("yyyy-MM-dd");
license.UseNumber = int.Parse(txt_UseNumber.Text);
license.InstallNumber = int.Parse(txt_InstallNumber.Text);
license.VersionUpgrade = txt_VersionUpgrade.Checked;
string context = DESEncrypt.Encrypt(XmlFormatterSerializer.SerializeToXml(license, license.GetType()));
string licenseFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "LCL.lic");
if (!File.Exists(licenseFile) == true)
{
File.Delete(licenseFile);
}
File.WriteAllText(licenseFile, context);
MessageBox.Show("写入成功");
but_Save.Enabled = true;
}
