DataGridView.CellContentClick Event
Definition
Important
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Occurs when the content within a cell is clicked.
public:
event System::Windows::Forms::DataGridViewCellEventHandler ^ CellContentClick;public event System.Windows.Forms.DataGridViewCellEventHandler CellContentClick;public event System.Windows.Forms.DataGridViewCellEventHandler? CellContentClick;member this.CellContentClick : System.Windows.Forms.DataGridViewCellEventHandler Public Custom Event CellContentClick As DataGridViewCellEventHandler Event Type
Examples
The following code example provides a handler for this event that determines whether the clicked cell is a link cell or a button cell and performs the corresponding action as a result. This example is part of a larger example available in the DataGridViewComboBoxColumn class overview topic.
private:
void DataGridView1_CellContentClick(Object^ /*sender*/, DataGridViewCellEventArgs^ e)
{
if (IsANonHeaderLinkCell(e))
{
MoveToLinked(e);
}
else if (IsANonHeaderButtonCell(e))
{
PopulateSales(e);
}
}
private:
void MoveToLinked(DataGridViewCellEventArgs^ e)
{
String^ employeeId;
Object^ value = DataGridView1->Rows[e->RowIndex]->Cells[e->ColumnIndex]->Value;
if (dynamic_cast<DBNull^>(value) != nullptr) { return; }
employeeId = value->ToString();
DataGridViewCell^ boss = RetrieveSuperiorsLastNameCell(employeeId);
if (boss != nullptr)
{
DataGridView1->CurrentCell = boss;
}
}
private:
bool IsANonHeaderLinkCell(DataGridViewCellEventArgs^ cellEvent)
{
if (dynamic_cast<DataGridViewLinkColumn^>(DataGridView1->Columns[cellEvent->ColumnIndex]) != nullptr
&&
cellEvent->RowIndex != -1)
{ return true; }
else { return false; }
}
private:
bool IsANonHeaderButtonCell(DataGridViewCellEventArgs^ cellEvent)
{
if (dynamic_cast<DataGridViewButtonColumn^>(DataGridView1->Columns[cellEvent->ColumnIndex]) != nullptr
&&
cellEvent->RowIndex != -1)
{ return true; }
else { return (false); }
}
private:
DataGridViewCell^ RetrieveSuperiorsLastNameCell(String^ employeeId)
{
for each (DataGridViewRow^ row in DataGridView1->Rows)
{
if (row->IsNewRow) { return nullptr; }
if (row->Cells[ColumnName::EmployeeID.ToString()]->Value->ToString()->Equals(employeeId))
{
return row->Cells[ColumnName::LastName.ToString()];
}
}
return nullptr;
}
private void DataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (IsANonHeaderLinkCell(e))
{
MoveToLinked(e);
}
else if (IsANonHeaderButtonCell(e))
{
PopulateSales(e);
}
}
private void MoveToLinked(DataGridViewCellEventArgs e)
{
string employeeId;
object value = DataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value;
if (value is DBNull) { return; }
employeeId = value.ToString();
DataGridViewCell boss = RetrieveSuperiorsLastNameCell(employeeId);
if (boss != null)
{
DataGridView1.CurrentCell = boss;
}
}
private bool IsANonHeaderLinkCell(DataGridViewCellEventArgs cellEvent)
{
if (DataGridView1.Columns[cellEvent.ColumnIndex] is
DataGridViewLinkColumn &&
cellEvent.RowIndex != -1)
{ return true; }
else { return false; }
}
private bool IsANonHeaderButtonCell(DataGridViewCellEventArgs cellEvent)
{
if (DataGridView1.Columns[cellEvent.ColumnIndex] is
DataGridViewButtonColumn &&
cellEvent.RowIndex != -1)
{ return true; }
else { return (false); }
}
private DataGridViewCell RetrieveSuperiorsLastNameCell(string employeeId)
{
foreach (DataGridViewRow row in DataGridView1.Rows)
{
if (row.IsNewRow) { return null; }
if (row.Cells[ColumnName.EmployeeId.ToString()].Value.ToString().Equals(employeeId))
{
return row.Cells[ColumnName.LastName.ToString()];
}
}
return null;
}
Private Sub DataGridView1_CellContentClick(ByVal sender As Object, _
ByVal e As DataGridViewCellEventArgs) _
Handles DataGridView1.CellContentClick
If IsANonHeaderLinkCell(e) Then
MoveToLinked(e)
ElseIf IsANonHeaderButtonCell(e) Then
PopulateSales(e)
End If
End Sub
Private Sub MoveToLinked(ByVal e As DataGridViewCellEventArgs)
Dim employeeId As String
Dim value As Object = DataGridView1.Rows(e.RowIndex). _
Cells(e.ColumnIndex).Value
If value.GetType Is GetType(DBNull) Then Return
employeeId = CType(value, String)
Dim boss As DataGridViewCell = _
RetrieveSuperiorsLastNameCell(employeeId)
If boss IsNot Nothing Then
DataGridView1.CurrentCell = boss
End If
End Sub
Private Function IsANonHeaderLinkCell(ByVal cellEvent As _
DataGridViewCellEventArgs) As Boolean
If TypeOf DataGridView1.Columns(cellEvent.ColumnIndex) _
Is DataGridViewLinkColumn _
AndAlso Not cellEvent.RowIndex = -1 Then _
Return True Else Return False
End Function
Private Function IsANonHeaderButtonCell(ByVal cellEvent As _
DataGridViewCellEventArgs) As Boolean
If TypeOf DataGridView1.Columns(cellEvent.ColumnIndex) _
Is DataGridViewButtonColumn _
AndAlso Not cellEvent.RowIndex = -1 Then _
Return True Else Return (False)
End Function
Private Function RetrieveSuperiorsLastNameCell( _
ByVal employeeId As String) As DataGridViewCell
For Each row As DataGridViewRow In DataGridView1.Rows
If row.IsNewRow Then Return Nothing
If row.Cells(ColumnName.EmployeeId.ToString()). _
Value.ToString().Equals(employeeId) Then
Return row.Cells(ColumnName.LastName.ToString())
End If
Next
Return Nothing
End Function
Remarks
This event occurs when the cell content is clicked. It also occurs when the user presses and releases the SPACEBAR while a button cell or check box cell has focus, and will occur twice for these cell types if the cell content is clicked while pressing the SPACEBAR.
Use this event to detect button clicks for a DataGridViewButtonCell or link clicks for a DataGridViewLinkCell.
For clicks in a DataGridViewCheckBoxCell, this event occurs before the check box changes value, so if you do not want to calculate the expected value based on the current value, you will typically handle the DataGridView.CellValueChanged event instead. Because that event occurs only when the user-specified value is committed, which typically occurs when focus leaves the cell, you must also handle the DataGridView.CurrentCellDirtyStateChanged event. In that handler, if the current cell is a check box cell, call the DataGridView.CommitEdit method and pass in the Commit value.
For more information about how to handle events, see Handling and Raising Events.
