If you want to respond immediately when users click a check box cell, you can handle the DataGridView. CellContentClick event, but this event occurs before the cell value is updated.
If you need the new value at the time of the click, one option is to calculate what the expected value will be based on the current value. Another approach is to commit the change immediately, and handle the DataGridView. CellValueChanged event to respond to it.
To commit the change when the cell is clicked, you must handle the DataGridView. CurrentCellDirtyStateChanged event. In the handler, if the current cell is a check box cell, call the DataGridView. CommitEdit method and pass in the Commit value. When you derive from DataGridViewCheckBoxColumn and add new properties to the derived class, be sure to override the Clone method to copy the new properties during cloning operations.
You should also call the base class's Clone method so that the properties of the base class are copied to the new cell. Initializes a new instance of the DataGridViewCheckBoxColumn and configures it to display check boxes with two or three states. Gets the DataGridView control associated with this element.
Gets or sets the name of the data source property or database column to which the DataGridViewColumn is bound. Gets or sets the underlying value corresponding to a cell value of false , which appears as an unchecked box.
Gets or sets a value that represents the width of the column when it is in fill mode relative to the widths of other fill-mode columns in the control. Gets or sets a value indicating whether a column will move when a user scrolls the DataGridView control horizontally. Gets a value indicating whether the DefaultCellStyle property has been set. Gets or sets the header cell of the DataGridViewBand. Gets or sets the underlying value corresponding to an indeterminate or null cell value, which appears as a disabled checkbox.
Gets the relative position of the band within the DataGridView control. Gets or sets a value indicating whether the hosted check box cells will allow three check states rather than two. Gets or sets the underlying value corresponding to a cell value of true , which appears as a checked box. Releases all resources used by the DataGridViewBand.
Releases the unmanaged resources used by the DataGridViewBand and optionally releases the managed resources. Gets the Type of the current instance. Creates a shallow copy of the current Object. Called when the band is associated with a different DataGridView. Raises the CellClick event. Insert 0, checkBoxColumn. AddHandler dataGridView1. EndEdit ;. Inside this event handler, first a check is made whether the clicked Cell belongs to first column and does not belong to Header row.
If the above condition is successful, a loop is executed over all the row CheckBoxes to make sure whether all the row CheckBoxes are checked or not. ToBoolean row. Cells[ "checkBoxColumn" ]. If Convert. Cells "checkBoxColumn". Exit For. End If. Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation. You will be notified via email when the author replies to your comment. Please select a comment to reply. You can add your comment about this article using the form below.
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