How do I code to display data in SQL table in datagridview in a different form using C#

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C#

I have two separate forms. One is for input data and the other is datagridview to display the imputs. I want the input to be displayed in the datagridview but I having error. The error is "EdificationMembersdataGridview does not exist in the current context"

Please I need help

What I have tried:

I tried the one in which the form and the datagriveiw are in the same windowsform it worked. But this one the form and the datagridview are in separate windows.
The form is a submenu item and the datagridview is also a submenu item.

SqlConnection con = new SqlConnection("Data Source=DESKTOP-JV7URL6;Initial Catalog=COCAhenkroApp;Integrated Security=True");
       private void btnSave_Click(object sender, EventArgs e)
       {

           con.Open();
           SqlCommand command = new SqlCommand("insert into EdificationMembers values('" + txtName.Text + "','" + cmbPosition.Text + "','" + txtContact.Text + "',getdate())", con);
           command.ExecuteNonQuery();
           MessageBox.Show("Successfully Saved");
           con.Close();
           BindData();
       }
       void BindData()
       {
           SqlCommand command = new SqlCommand("select * from EdificationMembers", con);
           SqlDataAdapter sda = new SqlDataAdapter(command);
           DataTable dt = new DataTable();
           sda.Fill(dt);
           EdificationMembersdataGridView.DataSource = dt;


       }