Child Form Load Question

Question

I'm attempting to link my Child Forms to my MDIParent forms however am having a bit of trouble completing this task. Okay for a foundation of this post in my main menu component I have a menu item named mnuChartOfAccounts and a Child Form named frmChartOfAccounts. I want the mnuChartOfAccounts item to open the Child Form frmChartOfAccounts. Now according to the Visual Studio .NET provided help my code should look like this: protected void New_OnClick(object sender System.EventArgs e) { //Create a new instance of Form2. Form2 NewMDIChild = new Form2(); //Set the parent of the new MDI child form. NewMDIChild.MDIParent = This; //Display the new MDI child form. NewMDIChild.Show(); } and If I understand correctly in the line Form2 NewMDIChild = new Form2(); I should change this to read Form2 NewMDIChild = new frmChartOfAccounts(); When I do this it gives me a error stating that frmChartOfAccounts is not a part of the provided name space. Also the click event for the menu item is not reading as protected void New_OnClick(object sender System.EventArgs e) it is reading as follows: private void mnuChartOfAccounts_Click(object sender System.EventArgs e) Can someone please help with this matter? Thanks for all the help....... David Watson

Administrator · Answer

If you want that the click event is reading as protected void New_OnClick(object sender System.EventArgs e) you have to change some things in the 'Windows Form Designer Generated Code'. You will find there something like this: this.mnuChartOfAccounts.Click += new System.EventHandler(this.mnuChartOfAccounts_Click); if you change it to this.mnuChartOfAccounts.Click += new System.EventHandler(this.New_Click); then the click event for the menu is reading as protected void New_OnClick(object sender System.EventArgs e). If you want to open your second form in this routine you can implement it like this: protected void New_OnClick(object sender System.EventArgs e) { frmChartOfAccounts myChild = new frmChartOfAccounts(this); // makes a new form with your mainform as parent myChild.Show(); // shows frmChartOfAccounts this.Enabled = false; // disables your main form } You have to change some things in your code for your second form this is the constructor of your second form. MDIParent myParent; // make an object of your mainform public frmChartOfAccounts(MDIParent parent) { InitializeComponent(); myParent = parent; // your mainform is set as parent of frmChartOfAccounts } When you close your second form in the application the onclosing event of this form will be executed. You have to do some things in this routine to show your mainform again. private void OnClosing(object sender System.ComponentModel.CancelEventArgs e) { myParent.Enabled = true; //enables your main form myParent.Show(); // shows your mainform } If you want the onclosing event is executed you have to add the following line in your 'Windows Form Designer Generated Code' of the frmChartOfAccounts form. this.Closing += new System.ComponentModel.CancelEventHandler(this.OnClosing); I hope this will help you.