How to pass data from program.cs to form 1

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Okay, so I have the following code:

File.WriteAllText("encrypted password.txt", RSAObj.ToXmlString(true));

in program.cs, but how can I pass the "RSAObj.ToXmlString(true) (the encrypted password) to form 1 textbox?

What I have tried:

Research and different codes, I have no idea

Posted 26-Jan-19 7:13am

Member 14130699

Updated 26-Jan-19 11:37am

v3

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2 solutions

Solution 1

C#

form1.textbox1.Text = RSAObj.ToXmlString(true);

or a better idea ...

C#

String encpwd = RSAObj.ToXmlString(true);
File.WriteAllText("encrypted password.txt", encpwd);
form1.textbox1.Text = encpwd;

Posted 26-Jan-19 7:22am

Richard MacCutchan

Comments

Member 14130699 26-Jan-19 13:27pm

I get two errors: 'Form1.Form1.textBox1' is inaccessible due to its protection level and An object reference is required for the non-static field, method, or property 'Form1.Form1.textBox1'

Please help?

Richard MacCutchan 27-Jan-19 3:34am

Don't try to use static references to your form. And check the protection level of the textbox, it should not be private if you want to do this. Alternatively create a method in Form1 that can set the text.

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pdoxtader · Accepted Answer · 2019-01-26T11:38:00

Solution 2

You can't do it directly. The best way to do this is to create a public function in Form1. Something like:

public void RSAObj(string value) 
{
   textbox1.text = value;
}

Then, in program.cs do something like this:

C#

static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            Form1 form1 = new Form1();
            form1.RSAObj(RSAObj.ToXmlString(true));
            Application.Run(form1);
        }

- Pete

Posted 26-Jan-19 11:38am

pdoxtader

Comments

Member 14130699 27-Jan-19 6:38am

Hi, your code works, but when I change "(RSAObj.ToXmlString(true)); to
(RSAObj.Encrypt(myKey, false)); I get an error. Why?

Member 14130699 27-Jan-19 7:10am

Hey man, these are the errors I get : Argument 1: cannot convert from 'byte[] to string' and The best overloaded method match for Form1.RSAObj(string)' has some invalid arguments.

You're very helpful.

Member 14130699 27-Jan-19 7:12am

I also use this code: Byte[] myKey = AES.generateKey();

pdoxtader 27-Jan-19 9:59am

The problem is that the function I provided accepts a string, and the new function you are trying to use returns Byte[]. You need to set up a new function that accepts Byte[], and write code in it to handle the byte array.