![]() When you handle this event, getting the value of a cell ToolTipText property raises the event and returns the value of the DataGridViewCellToolTipTextNeededEventArgs.ToolTipText property as specified in the event handler. To avoid a performance penalty when working with large amounts of data, handle the CellToolTipTextNeeded event rather than setting the ToolTipText property of multiple cells. When you bind the DataGridView control to an external data source or provide your own data source by implementing virtual mode, you might encounter performance issues. References to the System and assemblies. The CellFormatting event of the control must be associated with the event handler method shown in the example. With Me.dataGridView1.Rows(e.RowIndex).Cells(e.ColumnIndex)Ī DataGridView control named dataGridView1 that contains a column named Rating for displaying string values of one through four asterisk ("*") symbols. If e.ColumnIndex = Me.dataGridView1.Columns("Rating").Index _ Sub dataGridView1_CellFormatting(ByVal sender As Object, _īyVal e As DataGridViewCellFormattingEventArgs) _ ' Sets the ToolTip text for cells in the Rating column. Void dataGridView1_CellFormatting(object sender, Sets the ToolTip text for cells in the Rating column. If ( (e->ColumnIndex = this->dataGridView1->Columns->Index) Void dataGridView1_CellFormatting(Object^ /*sender*/, Set the DataGridViewCell.ToolTipText property. You can also disable the display of cell-level ToolTips by setting the DataGridView.ShowCellToolTips property to false. For example, if you have a row that displays status icons, you may want to provide text explanations using ToolTips. This is useful to display to users additional information about a cell or to provide to users an alternate description of the cell contents. You can override this behavior, however, to set ToolTip-text values for individual cells. Using .By default, ToolTips are used to display the values of DataGridView cells that are too small to show their entire contents. ensure that the ToolTipControlInfo.Object object uniquely identifies the currently processed visual element.in your event handler, set the event’s Info parameter to a ToolTipControlInfo object that contains tooltip information. ![]()
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