DataGridTableStyle.HeaderBackColorChanged Událost
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
Nastane, když se HeaderBackColor hodnota změní.
public:
event EventHandler ^ HeaderBackColorChanged;
public event EventHandler HeaderBackColorChanged;
member this.HeaderBackColorChanged : EventHandler
Public Custom Event HeaderBackColorChanged As EventHandler
Event Type
Příklady
Následující příklad kódu ukazuje použití tohoto člena.
private:
void Create_Table()
{
// Create DataSet.
myDataSet = gcnew DataSet( "myDataSet" );
// Create DataTable.
DataTable^ myCustomerTable = gcnew DataTable( "Customers" );
// Create two columns, and add them to the table.
DataColumn^ CustID = gcnew DataColumn( "CustID",int::typeid );
DataColumn^ CustName = gcnew DataColumn( "CustName" );
myCustomerTable->Columns->Add( CustID );
myCustomerTable->Columns->Add( CustName );
// Add table to DataSet.
myDataSet->Tables->Add( myCustomerTable );
dataGrid1->SetDataBinding( myDataSet, "Customers" );
myTableStyle = gcnew DataGridTableStyle;
myTableStyle->MappingName = "Customers";
myTableStyle->HeaderBackColorChanged += gcnew System::EventHandler( this, &Form1::HeaderBackColorChangedHandler );
myTableStyle->HeaderForeColorChanged += gcnew System::EventHandler( this, &Form1::HeaderForeColorChangedHandler );
}
// Change header background color.
void OnHeaderBackColor_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
dataGrid1->TableStyles->Clear();
String^ str = dynamic_cast<String^>(comboBox1->SelectedItem);
if ( str->Equals( "Red" ) )
myTableStyle->ForeColor = Color::Red;
else
if ( str->Equals( "Yellow" ) )
myTableStyle->ForeColor = Color::Yellow;
else
if ( str->Equals( "Blue" ) )
myTableStyle->ForeColor = Color::Blue;
myTableStyle->AlternatingBackColor = Color::LightGray;
dataGrid1->TableStyles->Add( myTableStyle );
}
void HeaderBackColorChangedHandler( Object^ /*sender*/, EventArgs^ /*e*/ )
{
MessageBox::Show( String::Concat( "Changed Header Background color to : ", comboBox1->SelectedItem ), "Success", MessageBoxButtons::OK, MessageBoxIcon::Exclamation );
}
private void Create_Table()
{
// Create DataSet.
myDataSet = new DataSet("myDataSet");
// Create DataTable.
DataTable myCustomerTable = new DataTable("Customers");
// Create two columns, and add them to the table.
DataColumn CustID = new DataColumn("CustID", typeof(int));
DataColumn CustName = new DataColumn("CustName");
myCustomerTable.Columns.Add(CustID);
myCustomerTable.Columns.Add(CustName);
// Add table to DataSet.
myDataSet.Tables.Add(myCustomerTable);
dataGrid1.SetDataBinding(myDataSet,"Customers");
myTableStyle = new DataGridTableStyle();
myTableStyle.MappingName = "Customers";
myTableStyle.HeaderBackColorChanged +=
new System.EventHandler(HeaderBackColorChangedHandler);
myTableStyle.HeaderForeColorChanged +=
new System.EventHandler(HeaderForeColorChangedHandler);
}
// Change header background color.
private void OnHeaderBackColor_Click(object sender, System.EventArgs e)
{
dataGrid1.TableStyles.Clear ();
switch(comboBox1.SelectedItem.ToString())
{
case "Red":
myTableStyle.HeaderBackColor = Color.Red;
break;
case "Yellow":
myTableStyle.HeaderBackColor = Color.Yellow ;
break;
case "Blue":
myTableStyle.HeaderBackColor = Color.Blue ;
break;
}
myTableStyle.AlternatingBackColor = Color.LightGray;
dataGrid1.TableStyles.Add(myTableStyle);
}
private void HeaderBackColorChangedHandler(object sender,EventArgs e)
{
MessageBox.Show("Changed Header Background color to : " +
comboBox1.SelectedItem.ToString(),"Success", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
}
Private Sub Create_Table()
' Create DataSet.
myDataSet = New DataSet("myDataSet")
' Create DataTable.
Dim myCustomerTable As New DataTable("Customers")
' Create two columns, and add them to the table.
Dim CustID As New DataColumn("CustID", GetType(Integer))
Dim CustName As New DataColumn("CustName")
myCustomerTable.Columns.Add(CustID)
myCustomerTable.Columns.Add(CustName)
' Add table to DataSet.
myDataSet.Tables.Add(myCustomerTable)
dataGrid1.SetDataBinding(myDataSet, "Customers")
myTableStyle = New DataGridTableStyle()
myTableStyle.MappingName = "Customers"
AddHandler myTableStyle.HeaderBackColorChanged, AddressOf HeaderBackColorChangedHandler
AddHandler myTableStyle.HeaderForeColorChanged, AddressOf HeaderForeColorChangedHandler
End Sub
' Change header background color.
Private Sub OnHeaderBackColor_Click(sender As Object, e As System.EventArgs) Handles button1.Click
dataGrid1.TableStyles.Clear()
Select Case comboBox1.SelectedItem.ToString()
Case "Red"
myTableStyle.HeaderBackColor = Color.Red
Case "Yellow"
myTableStyle.HeaderBackColor = Color.Yellow
Case "Blue"
myTableStyle.HeaderBackColor = Color.Blue
End Select
myTableStyle.AlternatingBackColor = Color.LightGray
dataGrid1.TableStyles.Add(myTableStyle)
End Sub
Private Sub HeaderBackColorChangedHandler(ByVal sender As Object, ByVal e As EventArgs)
MessageBox.Show("Changed Header Background color to : " + comboBox1.SelectedItem.ToString(), "Success", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
End Sub