Enable a child form and disable a control in MDI parent
1
I have a MDI parent form and I have a menustrip on it.
I am loading my MDI child form in it. Then I am trying to disable the menu strip in the form load event of mdi parent form. but it gives me an unhandled exception. the inner exception says null.
This is what I tried.
FormControllers.FrmLogin newLogin = new FormControllers.FrmLogin();
newLogin.MdiParent = this;
newLogin.StartPosition = FormStartPosition.CenterScreen;
newLogin.Show();
this.MainMenuStrip.Enabled = false;
How to overcome this?
c# windows-forms-designer mdichild menustrip mdiparent
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
add a comment |
1
I have a MDI parent form and I have a menustrip on it.
I am loading my MDI child form in it. Then I am trying to disable the menu strip in the form load event of mdi parent form. but it gives me an unhandled exception. the inner exception says null.
This is what I tried.
FormControllers.FrmLogin newLogin = new FormControllers.FrmLogin();
newLogin.MdiParent = this;
newLogin.StartPosition = FormStartPosition.CenterScreen;
newLogin.Show();
this.MainMenuStrip.Enabled = false;
How to overcome this?
c# windows-forms-designer mdichild menustrip mdiparent
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
1
You'd better call you newLogin form using ShowDialog().
– Nick
Nov 28 '18 at 7:51
"inner exception" is pretty weird. I'd guess you are running this code too soon, before the MDI parent is initialized. Hmm. Stack trace required.
– Hans Passant
Nov 28 '18 at 7:54
@Nick showdialog gave me this exception.Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling showDialog."}
– chathwind
Nov 28 '18 at 8:03
@chathwind - sorry misread that one - will delete now
– JohnB
Nov 28 '18 at 8:11
add a comment |
1
1
1
1
I have a MDI parent form and I have a menustrip on it.
I am loading my MDI child form in it. Then I am trying to disable the menu strip in the form load event of mdi parent form. but it gives me an unhandled exception. the inner exception says null.
This is what I tried.
FormControllers.FrmLogin newLogin = new FormControllers.FrmLogin();
newLogin.MdiParent = this;
newLogin.StartPosition = FormStartPosition.CenterScreen;
newLogin.Show();
this.MainMenuStrip.Enabled = false;
How to overcome this?
c# windows-forms-designer mdichild menustrip mdiparent
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
I have a MDI parent form and I have a menustrip on it.
I am loading my MDI child form in it. Then I am trying to disable the menu strip in the form load event of mdi parent form. but it gives me an unhandled exception. the inner exception says null.
This is what I tried.
FormControllers.FrmLogin newLogin = new FormControllers.FrmLogin();
newLogin.MdiParent = this;
newLogin.StartPosition = FormStartPosition.CenterScreen;
newLogin.Show();
this.MainMenuStrip.Enabled = false;
How to overcome this?
c# windows-forms-designer mdichild menustrip mdiparent
c# windows-forms-designer mdichild menustrip mdiparent
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
asked Nov 28 '18 at 7:38
chathwindchathwind
380424
380424
1
You'd better call you newLogin form using ShowDialog().
– Nick
Nov 28 '18 at 7:51
"inner exception" is pretty weird. I'd guess you are running this code too soon, before the MDI parent is initialized. Hmm. Stack trace required.
– Hans Passant
Nov 28 '18 at 7:54
@Nick showdialog gave me this exception.Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling showDialog."}
– chathwind
Nov 28 '18 at 8:03
@chathwind - sorry misread that one - will delete now
– JohnB
Nov 28 '18 at 8:11
add a comment |
1
You'd better call you newLogin form using ShowDialog().
– Nick
Nov 28 '18 at 7:51
"inner exception" is pretty weird. I'd guess you are running this code too soon, before the MDI parent is initialized. Hmm. Stack trace required.
– Hans Passant
Nov 28 '18 at 7:54
@Nick showdialog gave me this exception.Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling showDialog."}
– chathwind
Nov 28 '18 at 8:03
@chathwind - sorry misread that one - will delete now
– JohnB
Nov 28 '18 at 8:11
1
1
You'd better call you newLogin form using ShowDialog().
– Nick
Nov 28 '18 at 7:51
You'd better call you newLogin form using ShowDialog().
– Nick
Nov 28 '18 at 7:51
"inner exception" is pretty weird. I'd guess you are running this code too soon, before the MDI parent is initialized. Hmm. Stack trace required.
– Hans Passant
Nov 28 '18 at 7:54
"inner exception" is pretty weird. I'd guess you are running this code too soon, before the MDI parent is initialized. Hmm. Stack trace required.
– Hans Passant
Nov 28 '18 at 7:54
@Nick showdialog gave me this exception.Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling showDialog."}
– chathwind
Nov 28 '18 at 8:03
@Nick showdialog gave me this exception.Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling showDialog."}
– chathwind
Nov 28 '18 at 8:03
@chathwind - sorry misread that one - will delete now
– JohnB
Nov 28 '18 at 8:11
@chathwind - sorry misread that one - will delete now
– JohnB
Nov 28 '18 at 8:11
add a comment |
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1
You'd better call you newLogin form using ShowDialog().
– Nick
Nov 28 '18 at 7:51
"inner exception" is pretty weird. I'd guess you are running this code too soon, before the MDI parent is initialized. Hmm. Stack trace required.
– Hans Passant
Nov 28 '18 at 7:54
@Nick showdialog gave me this exception.Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling showDialog."}
– chathwind
Nov 28 '18 at 8:03
@chathwind - sorry misread that one - will delete now
– JohnB
Nov 28 '18 at 8:11