Mixing
ListBox Control Winforms Selected Item Color - Multiple List Box Controls
I have 5 list box controls on a single windows form. I'm setting the enabled property to false initially to control read/edit access. This makes it hard to read the selected value without enabling the control. I'm using the enabled property as the ListBox control doesn't have a read-only property like TextBox controls.
I've seen approaches online where I can set
ListBox1.DrawMode = DrawMode.OwnerDrawFixed
And use Draw_Item to control the select item colour.
Private Sub ListBox1_DrawItem(ByVal sender As Object, _ ByVal e As System.Windows.Forms.DrawItemEventArgs) _
However, I've not seen an approach for applying this to multiple ListBox controls on a form. I don't really want to have to tap into Draw_Item for each ListBox.
Also, the ListBox controls are data bound to a DataSet. Anyone had this issue before? If so, how did you handle it?
Or does one know a way of controlling whether a ListBox control is read-only or selectable based on view/edit state?
Thanks in advance for any tips.
vb.net winforms listbox
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
|
show 4 more comments
I have 5 list box controls on a single windows form. I'm setting the enabled property to false initially to control read/edit access. This makes it hard to read the selected value without enabling the control. I'm using the enabled property as the ListBox control doesn't have a read-only property like TextBox controls.
I've seen approaches online where I can set
ListBox1.DrawMode = DrawMode.OwnerDrawFixed
And use Draw_Item to control the select item colour.
Private Sub ListBox1_DrawItem(ByVal sender As Object, _ ByVal e As System.Windows.Forms.DrawItemEventArgs) _
However, I've not seen an approach for applying this to multiple ListBox controls on a form. I don't really want to have to tap into Draw_Item for each ListBox.
Also, the ListBox controls are data bound to a DataSet. Anyone had this issue before? If so, how did you handle it?
Or does one know a way of controlling whether a ListBox control is read-only or selectable based on view/edit state?
Thanks in advance for any tips.
vb.net winforms listbox
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
It appears that you're not looking for a solution for the "problem", but a solution for the solution you came up with to solve the "problem". There's a two-letters-name for this situation. Maybe, you could explain why you need to disable those controls in the first place.
– Jimi
Nov 21 '18 at 13:30
Hi, sure, the reason to disable them is so users cannot change them until they explicitly put the controls into edit mode. With TextBox controls I can use .ReadOnly, but the only thing I have on a ListBox is Enabled.
– Andrew Greatorex
Nov 21 '18 at 13:35
ListBoxes are not editable, so this doesn't explain much. If, withedit mode, you mean you have some procedure that allows to insert/remove a ListBox's item(s), you should focus on that procedure. You can change the ForeColor of the Items in a disable ListBox(s), owner-drawing it, but is it really necessary? Doesn't it cause some confusion at some point? Can you manage it without causing collateral issues (e.g., Screen DPI changes, Font sizes, UI resizing)?
– Jimi
Nov 21 '18 at 13:57
2
Well, you could (just a suggestion) have a Boolean field (e.g.,IsEditMode) that is set to false before editing is allowed. In theSelectedIndexChangedevent handler you could write something like:If Not IsEditMode Then ListBox1.SelectedIndex = -1 Return End If. This can give a visual clue that an Item can't be selected and any other code in the handler won't be executed.
– Jimi
Nov 21 '18 at 14:19
1
I think i know what you are trying to pass across, when the listbox is disabled, the items on it cannot be seen properly, You can change the listbox's forecolor to a brighter color before disabling it.
– preciousbetine
Nov 22 '18 at 1:39
|
show 4 more comments
I have 5 list box controls on a single windows form. I'm setting the enabled property to false initially to control read/edit access. This makes it hard to read the selected value without enabling the control. I'm using the enabled property as the ListBox control doesn't have a read-only property like TextBox controls.
I've seen approaches online where I can set
ListBox1.DrawMode = DrawMode.OwnerDrawFixed
And use Draw_Item to control the select item colour.
Private Sub ListBox1_DrawItem(ByVal sender As Object, _ ByVal e As System.Windows.Forms.DrawItemEventArgs) _
However, I've not seen an approach for applying this to multiple ListBox controls on a form. I don't really want to have to tap into Draw_Item for each ListBox.
Also, the ListBox controls are data bound to a DataSet. Anyone had this issue before? If so, how did you handle it?
Or does one know a way of controlling whether a ListBox control is read-only or selectable based on view/edit state?
Thanks in advance for any tips.
vb.net winforms listbox
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
I have 5 list box controls on a single windows form. I'm setting the enabled property to false initially to control read/edit access. This makes it hard to read the selected value without enabling the control. I'm using the enabled property as the ListBox control doesn't have a read-only property like TextBox controls.
I've seen approaches online where I can set
ListBox1.DrawMode = DrawMode.OwnerDrawFixed
And use Draw_Item to control the select item colour.
Private Sub ListBox1_DrawItem(ByVal sender As Object, _ ByVal e As System.Windows.Forms.DrawItemEventArgs) _
However, I've not seen an approach for applying this to multiple ListBox controls on a form. I don't really want to have to tap into Draw_Item for each ListBox.
Also, the ListBox controls are data bound to a DataSet. Anyone had this issue before? If so, how did you handle it?
Or does one know a way of controlling whether a ListBox control is read-only or selectable based on view/edit state?
Thanks in advance for any tips.
vb.net winforms listbox
vb.net winforms listbox
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
asked Nov 21 '18 at 13:21
Andrew GreatorexAndrew Greatorex
527
527
It appears that you're not looking for a solution for the "problem", but a solution for the solution you came up with to solve the "problem". There's a two-letters-name for this situation. Maybe, you could explain why you need to disable those controls in the first place.
– Jimi
Nov 21 '18 at 13:30
Hi, sure, the reason to disable them is so users cannot change them until they explicitly put the controls into edit mode. With TextBox controls I can use .ReadOnly, but the only thing I have on a ListBox is Enabled.
– Andrew Greatorex
Nov 21 '18 at 13:35
ListBoxes are not editable, so this doesn't explain much. If, withedit mode, you mean you have some procedure that allows to insert/remove a ListBox's item(s), you should focus on that procedure. You can change the ForeColor of the Items in a disable ListBox(s), owner-drawing it, but is it really necessary? Doesn't it cause some confusion at some point? Can you manage it without causing collateral issues (e.g., Screen DPI changes, Font sizes, UI resizing)?
– Jimi
Nov 21 '18 at 13:57
2
Well, you could (just a suggestion) have a Boolean field (e.g.,IsEditMode) that is set to false before editing is allowed. In theSelectedIndexChangedevent handler you could write something like:If Not IsEditMode Then ListBox1.SelectedIndex = -1 Return End If. This can give a visual clue that an Item can't be selected and any other code in the handler won't be executed.
– Jimi
Nov 21 '18 at 14:19
1
I think i know what you are trying to pass across, when the listbox is disabled, the items on it cannot be seen properly, You can change the listbox's forecolor to a brighter color before disabling it.
– preciousbetine
Nov 22 '18 at 1:39
|
show 4 more comments
It appears that you're not looking for a solution for the "problem", but a solution for the solution you came up with to solve the "problem". There's a two-letters-name for this situation. Maybe, you could explain why you need to disable those controls in the first place.
– Jimi
Nov 21 '18 at 13:30
Hi, sure, the reason to disable them is so users cannot change them until they explicitly put the controls into edit mode. With TextBox controls I can use .ReadOnly, but the only thing I have on a ListBox is Enabled.
– Andrew Greatorex
Nov 21 '18 at 13:35
ListBoxes are not editable, so this doesn't explain much. If, withedit mode, you mean you have some procedure that allows to insert/remove a ListBox's item(s), you should focus on that procedure. You can change the ForeColor of the Items in a disable ListBox(s), owner-drawing it, but is it really necessary? Doesn't it cause some confusion at some point? Can you manage it without causing collateral issues (e.g., Screen DPI changes, Font sizes, UI resizing)?
– Jimi
Nov 21 '18 at 13:57
2
Well, you could (just a suggestion) have a Boolean field (e.g.,IsEditMode) that is set to false before editing is allowed. In theSelectedIndexChangedevent handler you could write something like:If Not IsEditMode Then ListBox1.SelectedIndex = -1 Return End If. This can give a visual clue that an Item can't be selected and any other code in the handler won't be executed.
– Jimi
Nov 21 '18 at 14:19
1
I think i know what you are trying to pass across, when the listbox is disabled, the items on it cannot be seen properly, You can change the listbox's forecolor to a brighter color before disabling it.
– preciousbetine
Nov 22 '18 at 1:39
It appears that you're not looking for a solution for the "problem", but a solution for the solution you came up with to solve the "problem". There's a two-letters-name for this situation. Maybe, you could explain why you need to disable those controls in the first place.
– Jimi
Nov 21 '18 at 13:30
It appears that you're not looking for a solution for the "problem", but a solution for the solution you came up with to solve the "problem". There's a two-letters-name for this situation. Maybe, you could explain why you need to disable those controls in the first place.
– Jimi
Nov 21 '18 at 13:30
Hi, sure, the reason to disable them is so users cannot change them until they explicitly put the controls into edit mode. With TextBox controls I can use .ReadOnly, but the only thing I have on a ListBox is Enabled.
– Andrew Greatorex
Nov 21 '18 at 13:35
Hi, sure, the reason to disable them is so users cannot change them until they explicitly put the controls into edit mode. With TextBox controls I can use .ReadOnly, but the only thing I have on a ListBox is Enabled.
– Andrew Greatorex
Nov 21 '18 at 13:35
ListBoxes are not editable, so this doesn't explain much. If, with
edit mode, you mean you have some procedure that allows to insert/remove a ListBox's item(s), you should focus on that procedure. You can change the ForeColor of the Items in a disable ListBox(s), owner-drawing it, but is it really necessary? Doesn't it cause some confusion at some point? Can you manage it without causing collateral issues (e.g., Screen DPI changes, Font sizes, UI resizing)?– Jimi
Nov 21 '18 at 13:57
ListBoxes are not editable, so this doesn't explain much. If, with
edit mode, you mean you have some procedure that allows to insert/remove a ListBox's item(s), you should focus on that procedure. You can change the ForeColor of the Items in a disable ListBox(s), owner-drawing it, but is it really necessary? Doesn't it cause some confusion at some point? Can you manage it without causing collateral issues (e.g., Screen DPI changes, Font sizes, UI resizing)?– Jimi
Nov 21 '18 at 13:57
2
2
Well, you could (just a suggestion) have a Boolean field (e.g.,
IsEditMode) that is set to false before editing is allowed. In the SelectedIndexChanged event handler you could write something like: If Not IsEditMode Then ListBox1.SelectedIndex = -1 Return End If. This can give a visual clue that an Item can't be selected and any other code in the handler won't be executed.– Jimi
Nov 21 '18 at 14:19
Well, you could (just a suggestion) have a Boolean field (e.g.,
IsEditMode) that is set to false before editing is allowed. In the SelectedIndexChanged event handler you could write something like: If Not IsEditMode Then ListBox1.SelectedIndex = -1 Return End If. This can give a visual clue that an Item can't be selected and any other code in the handler won't be executed.– Jimi
Nov 21 '18 at 14:19
1
1
I think i know what you are trying to pass across, when the listbox is disabled, the items on it cannot be seen properly, You can change the listbox's forecolor to a brighter color before disabling it.
– preciousbetine
Nov 22 '18 at 1:39
I think i know what you are trying to pass across, when the listbox is disabled, the items on it cannot be seen properly, You can change the listbox's forecolor to a brighter color before disabling it.
– preciousbetine
Nov 22 '18 at 1:39
|
show 4 more comments
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It appears that you're not looking for a solution for the "problem", but a solution for the solution you came up with to solve the "problem". There's a two-letters-name for this situation. Maybe, you could explain why you need to disable those controls in the first place.
– Jimi
Nov 21 '18 at 13:30
Hi, sure, the reason to disable them is so users cannot change them until they explicitly put the controls into edit mode. With TextBox controls I can use .ReadOnly, but the only thing I have on a ListBox is Enabled.
– Andrew Greatorex
Nov 21 '18 at 13:35
ListBoxes are not editable, so this doesn't explain much. If, with
edit mode, you mean you have some procedure that allows to insert/remove a ListBox's item(s), you should focus on that procedure. You can change the ForeColor of the Items in a disable ListBox(s), owner-drawing it, but is it really necessary? Doesn't it cause some confusion at some point? Can you manage it without causing collateral issues (e.g., Screen DPI changes, Font sizes, UI resizing)?– Jimi
Nov 21 '18 at 13:57
2
Well, you could (just a suggestion) have a Boolean field (e.g.,
IsEditMode) that is set to false before editing is allowed. In theSelectedIndexChangedevent handler you could write something like:If Not IsEditMode Then ListBox1.SelectedIndex = -1 Return End If. This can give a visual clue that an Item can't be selected and any other code in the handler won't be executed.– Jimi
Nov 21 '18 at 14:19
1
I think i know what you are trying to pass across, when the listbox is disabled, the items on it cannot be seen properly, You can change the listbox's forecolor to a brighter color before disabling it.
– preciousbetine
Nov 22 '18 at 1:39