How to control button from form1 to form2?

Note that if you make a method or property then that could be as easy to use as making the Modifiers property public and the method or property is the object-oriented way to do it. Either way will work; the difference is a matter of style.

People that attempt to help others often suggest using "Application.OpenForms" because it is easy to suggest. There are other ways to accomplish what you need to do but we must know more about your application before we can suggest a more specific solution.

For getting the control in the form, you can create a public method or property in form1 that accesses the button. Then you have a safe and reliable way to use the button from another form.

If you use the code that Vulpes suggested, then the likely problem is that you are using the incorrect names. Are you sure there is a "lblCaptainchoose" in the CustomBox form? Note that if you were to use "as" to do the cast, then you can check to ensure that it worked. Alternatively, you can use try/catch to catch problems.

Hi vulpes,

I encounter an error in your code...plss help me.




CustomBox CustomBox1 = (CustomBox)Application.OpenForms["CustomBox"];
Label lblCaptainchoose = (Label)CustomBox1.Controls["lblCaptainchoose"];<<--------------------error--------------Object reference not set to an instance of an object.
string text = lblCaptainchoose.Text;

try
{
conn.Close();
string insert = "INSERT INTO CaptainVotes (Names) VALUES (@Param)";
SqlCommand cmd = new SqlCommand(insert, conn);
cmd.Parameters.Add("@Param", SqlDbType.VarChar, 100);
cmd.Parameters["@Param"].Value = lblCaptainchoose.Text;
conn.Open();
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
MessageBox.Show(ex.Message);
}
finally
{
conn.Close();
}