WPF DataGrid - DataGridTextColumn decimal/double/float input with PropertyChanged
I'm having trouble with decimal (double/float) inputs in DataGridTextColumn with UpdateSourceTrigger=PropertyChanged.
(1) I have searched several sites and many suggest to change this to LostFocus. Im not very keen on this implementation cause the behaviour with PropertyChanged is what I require. Unless there is a way to get the same result with LostFocus??
I have read the following articles on stackoverflow -
Link 1, Link 2, Link 3, Link 4, Link 5 & Link 6
(2) Using Binding="Binding StringFormat=N2"or its variation has a very annoying behavior as described in the comments in Link 4.
(3) The other method is to allow string input and parse it as double in the back end. This is fine-ish, and I'm holding onto it as a last resort solution only.
(4) Lastly in the same Link 4, a solution mentioned by xmedeko - System.Windows.FrameworkCompatibilityPreferences.KeepTextBoxDisplaySynchronizedWithTextProperty = false; for .NET 4.5 or later only.
I do have the newer version but not sure how/where to implement this line of code. Or if there's a way to turn this property false in the XAML itself? Any help is greatly appreciated. Unable to reply as a comment on that link due to my reputation level.
If there is a any other neater way while keeping the behavior similar to PropertyChanged, would be very helpful.
CODE
XAML - <DataGridTextColumn Header="Rate" Binding="Binding Path=Rate, UpdateSourceTrigger=PropertyChanged" Width="90"/>
cs -
public void NotifyPropertyChanged(string property)
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
public double Rate
get return rate;
set rate = value; NotifyPropertyChanged("Rate");
The code is actually very simple. This is displayed on a datagrid. The DataGridTextColumn does not accept decimal values and this correctly noted by Chevul Ervin in Link 2 -
UpdateSourceTrigger=PropertyChanged reevalutes the text on every
keystroke. A number that ends in a decimal point is invalid. Change
the UpdateSourceTrigger to LostFocus (same as removing it) or try to
type the '.' while you have other digits after it.
c# wpf data-binding datagrid
asked Nov 15 '18 at 4:49
BandookBandook
34
add a comment |
I'm having trouble with decimal (double/float) inputs in DataGridTextColumn with UpdateSourceTrigger=PropertyChanged.
(1) I have searched several sites and many suggest to change this to LostFocus. Im not very keen on this implementation cause the behaviour with PropertyChanged is what I require. Unless there is a way to get the same result with LostFocus??
I have read the following articles on stackoverflow -
Link 1, Link 2, Link 3, Link 4, Link 5 & Link 6
(2) Using Binding="Binding StringFormat=N2"or its variation has a very annoying behavior as described in the comments in Link 4.
(3) The other method is to allow string input and parse it as double in the back end. This is fine-ish, and I'm holding onto it as a last resort solution only.
(4) Lastly in the same Link 4, a solution mentioned by xmedeko - System.Windows.FrameworkCompatibilityPreferences.KeepTextBoxDisplaySynchronizedWithTextProperty = false; for .NET 4.5 or later only.
I do have the newer version but not sure how/where to implement this line of code. Or if there's a way to turn this property false in the XAML itself? Any help is greatly appreciated. Unable to reply as a comment on that link due to my reputation level.
If there is a any other neater way while keeping the behavior similar to PropertyChanged, would be very helpful.
CODE
XAML - <DataGridTextColumn Header="Rate" Binding="Binding Path=Rate, UpdateSourceTrigger=PropertyChanged" Width="90"/>
cs -
public void NotifyPropertyChanged(string property)
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
public double Rate
get return rate;
set rate = value; NotifyPropertyChanged("Rate");
The code is actually very simple. This is displayed on a datagrid. The DataGridTextColumn does not accept decimal values and this correctly noted by Chevul Ervin in Link 2 -
UpdateSourceTrigger=PropertyChanged reevalutes the text on every
keystroke. A number that ends in a decimal point is invalid. Change
the UpdateSourceTrigger to LostFocus (same as removing it) or try to
type the '.' while you have other digits after it.
c# wpf data-binding datagrid
asked Nov 15 '18 at 4:49
BandookBandook
34
It would be better if you show your code attempts so we can check whats problem you are facing. Without code its bit difficult.
– M. Adeel Khalid
Nov 15 '18 at 5:45
I have updated the main post with the code as requested.
– Bandook
Nov 15 '18 at 6:44
add a comment |
I'm having trouble with decimal (double/float) inputs in DataGridTextColumn with UpdateSourceTrigger=PropertyChanged.
(1) I have searched several sites and many suggest to change this to LostFocus. Im not very keen on this implementation cause the behaviour with PropertyChanged is what I require. Unless there is a way to get the same result with LostFocus??
I have read the following articles on stackoverflow -
Link 1, Link 2, Link 3, Link 4, Link 5 & Link 6
(2) Using Binding="Binding StringFormat=N2"or its variation has a very annoying behavior as described in the comments in Link 4.
(3) The other method is to allow string input and parse it as double in the back end. This is fine-ish, and I'm holding onto it as a last resort solution only.
(4) Lastly in the same Link 4, a solution mentioned by xmedeko - System.Windows.FrameworkCompatibilityPreferences.KeepTextBoxDisplaySynchronizedWithTextProperty = false; for .NET 4.5 or later only.
I do have the newer version but not sure how/where to implement this line of code. Or if there's a way to turn this property false in the XAML itself? Any help is greatly appreciated. Unable to reply as a comment on that link due to my reputation level.
If there is a any other neater way while keeping the behavior similar to PropertyChanged, would be very helpful.
CODE
XAML - <DataGridTextColumn Header="Rate" Binding="Binding Path=Rate, UpdateSourceTrigger=PropertyChanged" Width="90"/>
cs -
public void NotifyPropertyChanged(string property)
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
public double Rate
get return rate;
set rate = value; NotifyPropertyChanged("Rate");
The code is actually very simple. This is displayed on a datagrid. The DataGridTextColumn does not accept decimal values and this correctly noted by Chevul Ervin in Link 2 -
UpdateSourceTrigger=PropertyChanged reevalutes the text on every
keystroke. A number that ends in a decimal point is invalid. Change
the UpdateSourceTrigger to LostFocus (same as removing it) or try to
type the '.' while you have other digits after it.
c# wpf data-binding datagrid
asked Nov 15 '18 at 4:49
BandookBandook
34
I'm having trouble with decimal (double/float) inputs in DataGridTextColumn with UpdateSourceTrigger=PropertyChanged.
(1) I have searched several sites and many suggest to change this to LostFocus. Im not very keen on this implementation cause the behaviour with PropertyChanged is what I require. Unless there is a way to get the same result with LostFocus??
I have read the following articles on stackoverflow -
Link 1, Link 2, Link 3, Link 4, Link 5 & Link 6
(2) Using Binding="Binding StringFormat=N2"or its variation has a very annoying behavior as described in the comments in Link 4.
(3) The other method is to allow string input and parse it as double in the back end. This is fine-ish, and I'm holding onto it as a last resort solution only.
(4) Lastly in the same Link 4, a solution mentioned by xmedeko - System.Windows.FrameworkCompatibilityPreferences.KeepTextBoxDisplaySynchronizedWithTextProperty = false; for .NET 4.5 or later only.
I do have the newer version but not sure how/where to implement this line of code. Or if there's a way to turn this property false in the XAML itself? Any help is greatly appreciated. Unable to reply as a comment on that link due to my reputation level.
If there is a any other neater way while keeping the behavior similar to PropertyChanged, would be very helpful.
CODE
XAML - <DataGridTextColumn Header="Rate" Binding="Binding Path=Rate, UpdateSourceTrigger=PropertyChanged" Width="90"/>
cs -
public void NotifyPropertyChanged(string property)
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
public double Rate
get return rate;
set rate = value; NotifyPropertyChanged("Rate");
The code is actually very simple. This is displayed on a datagrid. The DataGridTextColumn does not accept decimal values and this correctly noted by Chevul Ervin in Link 2 -
UpdateSourceTrigger=PropertyChanged reevalutes the text on every
keystroke. A number that ends in a decimal point is invalid. Change
the UpdateSourceTrigger to LostFocus (same as removing it) or try to
type the '.' while you have other digits after it.
c# wpf data-binding datagrid
c# wpf data-binding datagrid
asked Nov 15 '18 at 4:49
BandookBandook
34
asked Nov 15 '18 at 4:49
BandookBandook
34
edited Nov 15 '18 at 6:43
Bandook
asked Nov 15 '18 at 4:49
BandookBandook
34
asked Nov 15 '18 at 4:49
BandookBandook
34
asked Nov 15 '18 at 4:49
BandookBandook
34
34
It would be better if you show your code attempts so we can check whats problem you are facing. Without code its bit difficult.
– M. Adeel Khalid
Nov 15 '18 at 5:45
I have updated the main post with the code as requested.
– Bandook
Nov 15 '18 at 6:44
add a comment |
It would be better if you show your code attempts so we can check whats problem you are facing. Without code its bit difficult.
– M. Adeel Khalid
Nov 15 '18 at 5:45
I have updated the main post with the code as requested.
– Bandook
Nov 15 '18 at 6:44
It would be better if you show your code attempts so we can check whats problem you are facing. Without code its bit difficult.
– M. Adeel Khalid
Nov 15 '18 at 5:45
It would be better if you show your code attempts so we can check whats problem you are facing. Without code its bit difficult.
– M. Adeel Khalid
Nov 15 '18 at 5:45
I have updated the main post with the code as requested.
– Bandook
Nov 15 '18 at 6:44
I have updated the main post with the code as requested.
– Bandook
Nov 15 '18 at 6:44
add a comment |
1 Answer
1
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I did quite a bit of research and found no solution. So going with Option 3 - allow string input and handle it in the backend.
answered Dec 2 '18 at 6:34
BandookBandook
34
add a comment |
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I did quite a bit of research and found no solution. So going with Option 3 - allow string input and handle it in the backend.
answered Dec 2 '18 at 6:34
BandookBandook
34
add a comment |
I did quite a bit of research and found no solution. So going with Option 3 - allow string input and handle it in the backend.
answered Dec 2 '18 at 6:34
BandookBandook
34
add a comment |
I did quite a bit of research and found no solution. So going with Option 3 - allow string input and handle it in the backend.
answered Dec 2 '18 at 6:34
BandookBandook
34
I did quite a bit of research and found no solution. So going with Option 3 - allow string input and handle it in the backend.
answered Dec 2 '18 at 6:34
BandookBandook
34
answered Dec 2 '18 at 6:34
BandookBandook
34
answered Dec 2 '18 at 6:34
BandookBandook
34
answered Dec 2 '18 at 6:34
BandookBandook
34
34
add a comment |
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It would be better if you show your code attempts so we can check whats problem you are facing. Without code its bit difficult.
– M. Adeel Khalid
Nov 15 '18 at 5:45
I have updated the main post with the code as requested.
– Bandook
Nov 15 '18 at 6:44