DataGridViewCellEventArgs Class
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Provides data for DataGridView events related to cell and row operations.
public ref class DataGridViewCellEventArgs : EventArgs
public class DataGridViewCellEventArgs : EventArgs
type DataGridViewCellEventArgs = class
inherit EventArgs
Public Class DataGridViewCellEventArgs
Inherits EventArgs
- Inheritance
- Derived
The following code example demonstrates using CellMouseEnter and CellMouseLeave event handlers to determine whether a cell can be clicked. The example updates each ToolTipText property value to advertise the current image layout. This code is part of a larger example shown in How to: Work with Image Columns in the Windows Forms DataGridView Control.
void dataGridView1_CellMouseEnter( Object^ sender, DataGridViewCellEventArgs^ e )
{
Bitmap^ markingUnderMouse = dynamic_cast<Bitmap^>(dataGridView1->Rows[ e->RowIndex ]->Cells[ e->ColumnIndex ]->Value);
if ( markingUnderMouse == blank )
{
dataGridView1->Cursor = Cursors::Default;
}
else
if ( markingUnderMouse == o || markingUnderMouse == x )
{
dataGridView1->Cursor = Cursors::No;
ToolTip(e,true);
}
}
void ToolTip( DataGridViewCellEventArgs^ e, bool showTip )
{
DataGridViewImageCell^ cell = dynamic_cast<DataGridViewImageCell^>(dataGridView1->Rows[ e->RowIndex ]->Cells[ e->ColumnIndex ]);
DataGridViewImageColumn^ imageColumn = dynamic_cast<DataGridViewImageColumn^>(dataGridView1->Columns[ cell->ColumnIndex ]);
if ( showTip )
cell->ToolTipText = imageColumn->Description;
else
{
cell->ToolTipText = String::Empty;
}
}
void dataGridView1_CellMouseLeave( Object^ sender, DataGridViewCellEventArgs^ e )
{
ToolTip( e, false );
dataGridView1->Cursor = Cursors::Default;
}
private void dataGridView1_CellMouseEnter(object sender,
DataGridViewCellEventArgs e)
{
Bitmap markingUnderMouse = (Bitmap)dataGridView1.
Rows[e.RowIndex].
Cells[e.ColumnIndex].Value;
if (markingUnderMouse == blank)
{
dataGridView1.Cursor = Cursors.Default;
}
else if (markingUnderMouse == o || markingUnderMouse == x)
{
dataGridView1.Cursor = Cursors.No;
ToolTip(e, true);
}
}
private void ToolTip(DataGridViewCellEventArgs e, bool showTip)
{
DataGridViewImageCell cell = (DataGridViewImageCell)
dataGridView1
.Rows[e.RowIndex].Cells[e.ColumnIndex];
DataGridViewImageColumn imageColumn =
(DataGridViewImageColumn)
dataGridView1.Columns[cell.ColumnIndex];
if (showTip)
{
cell.ToolTipText = imageColumn.Description;
}
else { cell.ToolTipText = String.Empty; }
}
private void dataGridView1_CellMouseLeave(object sender,
DataGridViewCellEventArgs e)
{
ToolTip(e, false);
dataGridView1.Cursor = Cursors.Default;
}
Private Sub dataGridView1_CellMouseEnter(ByVal sender As Object, _
ByVal e As DataGridViewCellEventArgs) _
Handles dataGridView1.CellMouseEnter
Dim markingUnderMouse As Bitmap = _
CType(dataGridView1.Rows(e.RowIndex). _
Cells(e.ColumnIndex).Value, Bitmap)
If markingUnderMouse Is blank Then
dataGridView1.Cursor = Cursors.Default
ElseIf markingUnderMouse Is o OrElse markingUnderMouse Is x Then
dataGridView1.Cursor = Cursors.No
ToolTip(e)
End If
End Sub
Private Sub ToolTip( _
ByVal e As DataGridViewCellEventArgs)
Dim cell As DataGridViewImageCell = _
CType(dataGridView1.Rows(e.RowIndex). _
Cells(e.ColumnIndex), DataGridViewImageCell)
Dim imageColumn As DataGridViewImageColumn = _
CType(dataGridView1.Columns(cell.ColumnIndex), _
DataGridViewImageColumn)
cell.ToolTipText = imageColumn.Description
End Sub
Private Sub dataGridView1_CellMouseLeave(ByVal sender As Object, _
ByVal e As DataGridViewCellEventArgs) _
Handles dataGridView1.CellMouseLeave
dataGridView1.Cursor = Cursors.Default
End Sub
The DataGridViewCellEventArgs class provides data for the following DataGridView events:
Data |
Initializes a new instance of the DataGridViewCellEventArgs class. |
Column |
Gets a value indicating the column index of the cell that the event occurs for. |
Row |
Gets a value indicating the row index of the cell that the event occurs for. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Get |
Serves as the default hash function. (Inherited from Object) |
Get |
Gets the Type of the current instance. (Inherited from Object) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
To |
Returns a string that represents the current object. (Inherited from Object) |
Produkt | Versioner |
---|---|
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9 |
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