How to control button from form1 to form2?

Question

Hi, How to control button1.tex from form1, controlled in form2 or get the value from button1.text in form1 to form2?

Vulpes · Answer

Another possibility is that the label is not on the form itself but within some container such as a panel. Suppose. for example, it's on panel1. Then, you can still 'drill down' to the label as follows: CustomBox CustomBox1 = (CustomBox)Application.OpenForms["CustomBox"]; Panel panel1 = (Panel)CustomBox1.Controls["panel1"]; Label lblCaptainchoose = (Label)panel1.Controls["lblCaptainchoose"]; However, if you need to go down more levels than this, it's easier to just change the label's Modifiers property (in the Properties Box) from private to internal. You can then simply use: CustomBox1.lblCaptainchoose.

Vulpes · Answer

An easy way without disrupting your existing code is as follows. I've assumed that button1 has been place directly on Form1 and not in some container such as a panel or groupbox: // code to be placed within Form2 Form1 form1 = (Form1)Application.OpenForms["Form1"]; Button button1 = (Button)form1.Controls["button1"]; string text = button1.Text;

Sam Hobbs · Answer

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.

Sam Hobbs · Answer

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.

Black Diamond · Answer

Hi vulpes, I encounter an error in your code...plss help me. CustomBox CustomBox1 = (CustomBox)Application.OpenForms["CustomBox"]; Label lblCaptainchoose = (Label)CustomBox1.Controls["lblCaptainchoose"]; 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(); }

Black Diamond · Answer

Thanks vulpes!!.

How to control button from form1 to form2?

Answers (6)