你可能感興趣的試題

You are developing a Windows Forms application that contains a DataGridView control. The DataGridView capture the customer's name, address, and phone number.
You have been asked to provide data validation in a DataGridView to prevent users from leaving the..
You need to ensure that users cannot tab out of the name field without entering data
What should you do ?（）

A. Validate the name field in the CellValidating event. Set e.Cancel = true if the name field is
B. Validate the name field in the CellErrorTextChanged event. Get e.RowIndex if the name field ..
C. Validate the name field in the CellEnter event. Set the focus on the name field if the name ...
D. Validate the name field in the CancelRowEdit event. Set the focus on the name field if the name ...

單項(xiàng)選擇題

The UI is not being updated when the Data property is set.
You need to ensure that the DisplayData class correctly updates the UI when the Data ..
What should you do ?（）

A. Insert the followiing code at line 14    NotifyPropertyChanged("Data");
B. Insert the followiing code at line 16    NotifyPropertyChanged("Data");
C. Insert the followiing code at line 14    NotifyPropertyChanged(value);
D. Insert the followiing code at line 16    NotifyPropertyChanged(value);

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你可能感興趣的試題

The UI is not being updated when the Data property is set. You need to ensure that the DisplayData class correctly updates the UI when the Data .. What should you do ?（）

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The UI is not being updated when the Data property is set.
You need to ensure that the DisplayData class correctly updates the UI when the Data ..
What should you do ?（）