Validating datagrid values

30-Nov-2019 04:09

Based in Brussels, Belgium, U2U Consult has been offering consulting & development services in the EMEA region for over 10 years.We offer mobile development on all platforms from Apple to Android & Microsoft.The following procedures describe how to apply validation rules to Data Grid bindings and customize the visual feedback.

When this event is canceled in virtual mode, the Cell Value Pushed event will not be raised.What I am wanting to do is be able to either: a) Handle this exception and show a warning to the user in my UI b) Have some custom validation method which can set a flag in my code that I can use to handle the error at some point I don't mind which solution I go with, I just don't want the user to not notice the error. Thanks, just given that a try and while the event does get called when I modify my data of the correct type, it does not get called if the datatype the user inputs is wrong. first create behaviors for your input controls where you can make sure that the values ALWAYS convertible to your underlying type.The same as before happens, the box is highlighted red and the format exception is handled by wpf, but the event isn't called. another solution would be thats your viewmodel where you bind to just have properties of type string.Note The Data Grid View control replaces and adds functionality to the Data Grid control; however, the Data Grid control is retained for both backward compatibility and future use, if you choose.For more information, see Differences Between the Windows Forms Data Grid View and Data Grid Controls.

When this event is canceled in virtual mode, the Cell Value Pushed event will not be raised.What I am wanting to do is be able to either: a) Handle this exception and show a warning to the user in my UI b) Have some custom validation method which can set a flag in my code that I can use to handle the error at some point I don't mind which solution I go with, I just don't want the user to not notice the error. Thanks, just given that a try and while the event does get called when I modify my data of the correct type, it does not get called if the datatype the user inputs is wrong. first create behaviors for your input controls where you can make sure that the values ALWAYS convertible to your underlying type.The same as before happens, the box is highlighted red and the format exception is handled by wpf, but the event isn't called. another solution would be thats your viewmodel where you bind to just have properties of type string.Note The Data Grid View control replaces and adds functionality to the Data Grid control; however, the Data Grid control is retained for both backward compatibility and future use, if you choose.For more information, see Differences Between the Windows Forms Data Grid View and Data Grid Controls.Data Grid View Cell Validating Event Handler Data Grid View Cell Validating Event Args Cell Validated Data Grid View Cell On Cell Validating Data Grid View Class System.