WPF how to define TextBox with conditional IsReadOnly

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WPF how to define TextBox with conditional IsReadOnly

Dmtr_Grms 331

I have a WPF with a TabItem that has a TextBox that contain the Last Name (Binded to Last Name SQL Server DB field). In the same record I have a flag that define if the person is an Associate or not.

I would like to define a conditional IsReadOnly on the TextBox. If Associate is True then the TextBox should be ReadOnly. How is it possible to manage simply that necessity?

Code behind is C#.

Thanks in advance for your suggestions.

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Answer 1

Viorel 122.5K

If you already have a binding for last name, then add a similar binding:

<TextBox Text="{Binding LastName}"  IsReadOnly="{Binding IsAssociate}" . . . />

where IsAssociate is a bool property. Extend your source data object to include such property.

Dmtr_Grms 331 Reputation points

2023-03-07T19:51:53.98+00:00

Sorry but I'm quite new with XAML and C#. Can I tell you to be more explicit on what you mean with extend my source data object? Thanks.
Viorel 122.5K Reputation points

2023-03-07T20:10:55.6166667+00:00
For binding, probably you have a class that contains the LastName property; then you can add the IsAssociate property:

class MyData { public string LastName { get; set; } public bool IsAssociate { get; set; } }

Or maybe you have a DataTable that contains the "LastName" column. Then add the IsAssociate column or adjust the SQL query that is used to fill the DataTable.

It is not clear how are binding and SQL implemented in your current code.
Dmtr_Grms 331 Reputation points

2023-03-08T11:03:15.46+00:00

Solved! Thanks a lot.

Have the same question for a DatePicker is that possible I have seen that it doesn't accept IsReadOnly and I can understand that it could seem a non sense to have a DatePicker in read only but again in a specific case I need to block and avoid changes,

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WPF how to define TextBox with conditional IsReadOnly

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