Form in C#

Mei

hello, I'm new in C#.

I have a one small problem, I have a class, where I have :

public void errRaise(string msg)

{

if (error == "")

{

error = msg;

}

// I would like to write on a label1 on Form1 a msg.

}

I know how to access label1 from Form1, but I dont know how to realize that in a class, please, help.

4 Replies

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Santhosh N16y ago
Its always better not to pass control instances across classes, but just send string values as I mentioned before and use the string to display in the form..
0
Mei16y ago
well, actually I have 2 classes, and one Form1, I call a method in class2 from class1 to write in a label on Form1. So, I tried your code, but it doesn't work :(.
0
Kirtan Patel16y ago

Friend,

Here is your Solution !!!

if you find my answer use full then please check "Do you like this answer" check box :)

//Import the Following Name space in Class

using System.Windows.Forms;

//Now Write Function Like this

public void errRaise(string msg,Label lbl)

        {

            if (error == "")

            {

                lbl.Text = msg;

            }

        }

// Here is How to Use the Function

// Suppose you want to Set error on Form's Label 1

then call it like below in form

Class1 c1 = new Class1();

c1.errRais("Error Message Here",Label1);
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Santhosh N16y ago
I suppose you are calling this function from a form for displaying error...
I would suggest you to return the error msg in the function and assing this to the label control in the form as you will have that use in that only but not in the class
public string errRaise(string msg)

   {

   if (error == "")

   {

   error = msg;

   }

   return error;// I would like to write on a label1 on Form1 a msg.

   }

and in form class, you can have

label1.Text = errRaise("ur msg");
0