How to Validate Activation Key and proceed to Login Form

puneet ahooja

10y1kVisual Basic .NET

Hi Friends,

i want to know how to validate the activation key and proceed to Next form i.e. Login Form.

I am developing the forms.

Can Anyone helps;

Here is the code:

private void button1_Click(object sender, EventArgs e)

{

try

{

if (Convert.ToInt32(textBox1.Text) + Convert.ToInt32(textBox2.Text) + Convert.ToInt32(textBox3.Text) + Convert.ToInt32(textBox4.Text) + Convert.ToInt32(textBox5.Text) == 1000)

MessageBox.Show(" Key Sucessfully Activated!");

obj.Show();

this.Hide();

else

MessageBox.Show("Enter Correct Key Number ");

}

catch (System.FormatException ex)

{

MessageBox.Show("Error! Activation Key contain Numbers");

}

HERE IS THE ERRORS :

Error 1 Only assignment, call, increment, decrement, and new object expressions can be used as a statement D:\VS Projects\AMC\amc\amc\LicenceKey.cs 35 32 amc

Error 2 Invalid expression term 'else' D:\VS Projects\AMC\amc\amc\LicenceKey.cs 39 17 amc

Error 3 ; expected D:\VS Projects\AMC\amc\amc\LicenceKey.cs 39 21 amc

3 Replies

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puneet ahooja10y ago
Thanks Bro !

Its really works

Regards
Puneet
Manas Mohapatra10y ago
At which line it is throwing exception please provide it.
Sanjay Sabariya10y ago
hello Punnet,
Please try this code.i think it's solve your error.

private void button1_Click(object sender, EventArgs e)
{
try
{
if (((Convert.ToInt32(textBox1.Text)) + (Convert.ToInt32(textBox2.Text)) + (Convert.ToInt32(textBox3.Text)) + (Convert.ToInt32(textBox4.Text)) + (Convert.ToInt32(textBox5.Text))) == 1000)
{
MessageBox.Show(" Key Sucessfully Activated!");
login obj = new login();
obj.Show();
this.Hide();
}
else
{
MessageBox.Show("Enter Correct Key Number ");
}
}
catch (System.FormatException ex)
{
MessageBox.Show("Error! Activation Key contain Numbers");
}
}